"waterproofing"

The Gatehouse in Whaddon, Milton Keynes required a complete roof renewal with a new roof lantern installation. Over the years, the roofs had undergone several failed repairs, therefore, the client required a robust, cold applied, cost effective solution. Proteus Waterproofing specified Proteus Pro-Cold® as it's a single pack, fully reinforced polyurethane system that is cold applied, seamless and elastomeric, providing up to 20 years further life to the structures it is applied to.High Performance WaterproofingThe existing roof was a EPDM roof that had to be completely stripped. The deck was replaced and a complete warm roof build up, including Proteus Pro- Therm PIR insulation boards, was installed and finished with Proteus Pro-Cold®. As ponding was an issue on this roof, a new gutter was created to solve this problem. The client was incredibly pleased with the finish, so much so, that their neighbours have requested our Proteus Approved Contractor to carries out their roofing works. Health & SafetyAs the building is an occupied residential building, keeping the residents safe was paramount. As Proteus Pro-Cold® is cold applied, it met all the health and safety criteria, as well as keeping disruptions to a minimum.Long Term PerformanceProteus Pro-Cold® offers a low maintenance, durable waterproofing and protection solution for a range of new build and refurbishment applications. It is cold applied, eliminating the risk of fire and once cured, provides a completely seamless waterproof protection and has excellent UV stability, making it suitable to use in all climates. Proteus Pro-Cold® forms a seamless, fully adhered membrane and has BROOF(t4) certification.

The brief for this project was to design, supply and install a bespoke and sympathetic waterproofing solution to a Grade II listed, commercial structure with an impractical damp basement.Delta Registered Installers, MacLennan Waterproofing worked closely with the Principal Contractor, HB Projects to achieve a Grade 3 habitable space whilst preserving this historic structure.The Co-op shop in Petworth Village, provides the local community with everything they need, whether its household essentials or a place to meet friends.The site incorporates two Listed Buildings, including part of a Listed Church. The store applied for listed building consent to reconfigure its ground and basement floors, to increase the retail floor space and improve the functionality of the store.When designing a waterproofing/damp proofing solution in a historic building or a structure of architectural interest, additional design considerations should be employed during the design stage to maintain preserve aesthetic and structural integrity of the structure/building. The waterproofing design should be sympathetic in application whilst offering a robust solution.Care consideration should be applied when specifying products to ensure they are ideally suited for meeting the complexities of listed building requirements.

The 2,500m2 basement extends beyond the property where a blue-green roof will be created over a suspended podium deck to form part of the garden. The Triton team worked closely with waterproofing and blue-green roof design specialists, EPG, to create a waterproofing strategy and utilised a comprehensive Construction Quality Assurance protocol agreed between Triton and EPG. The Triton team had been called in by main contractor, Era Build Ltd, to replace a previous supplier who had been unable to provide a warranty. After detailing was complete; Triton Approved Contractor, Cast Contracting Ltd (CCL), installed the systems.

Comprising of nine shops and several residential flats, properties 29-47 High Street Polegate required a full roof refurbishment after complaints of water ingress into the residential buildings. Proteus Waterproofing conducted a thorough survey which revealed that the existing roof build up, made up of a timber deck and 2-layer felt, had been previously repaired but was now at the end of its serviceable life.Being a residential building with a combustible deck, protecting individual properties from internal fire spread was a key consideration. Compartment walls were identified allowing Proteus Waterproofing to provide a solution that would meet regulatory guidance relating to the junction of compartment walls and roofs in Approved Document B whilst meeting the needs of the client.Proteus Waterproofing specified their robust reinforced bitumen membrane range of Proteus Pro-Felt®, including a bespoke hybrid insulation approach, where instead of a full replacement consisting of entirely non-combustible insulation, a scheme was designed to meet the requirements above and either side of the compartment walls, offering the client the most cost-effective solution possible that would also mitigate any unnecessary increase of weight loading elsewhere on the roof.High Performance WaterproofingThe waterproofing and existing deck were stripped back and re- decked with 18mm plywood. When removing the existing waterproofing, our approved contractor, carefully recorded the exact location of the party walls as no drawings of the upper story flats were available.Proteus Pro-Felt® SA AVCL was used as a vapour control layer to allow for the application of the hybrid combination of 150mm Proteus Pro-Therm PIR insulation and 150mm Proteus Pro-Therm Mineral Wool insulation. A thermal calculation was undertaken to ensure that the final result met the requirements of Part L of the National Building Regulations. These were both adhered with Proteus Pro-Bond Foaming Adhesive. Proteus Pro-Felt® SA Underlay Plain was laid and finished with Proteus Pro-Felt® Ultima Plus Fireguard Mineral Capsheet, providing the client with a fully waterproofed Part B and Part L compliant roof, guaranteed for 20 years.Proteus Waterproofing worked closely with the Proteus Approved Contractor, to ensure the project was delivered to a high standard.Health & SafetyWhen working on occupied buildings, safety is always of utmost importance, as well as keeping disruptions to a minimum. The Proteus Pro-Felt® range have been tested to the highest European Classification of BROOF(t4), making it the ideal system to use on all buildings, as the risks to residents, property and members of the public are greatly reduced. All Proteus Waterproofing specifications promote fire safe installation methods conforming to the industry lead Safe2Torch guidelines. Proteus also have a range of cold liquid applied membranes which are also BROOF(t4) certified.Long Term PerformanceProteus Pro-Felt® offers high-performance bituminous membrane systems, tested to perform in extreme temperatures and weather conditions, while offering clients a robust and cost-effective waterproofing solution. Proteus Pro-Felt® Ultima Plus range retains its high polymer performance. Its class leading, high quality modified bitumen content allows this flexible membrane to move with the building and ensure long term durability and performance with third party BBA accreditation and guarantees available up to 30 years.

Proteus Waterproofing were contacted to assist with the roof refurbishment for the The Co-Operative Group, Wembley. The existing felt waterproofing and timber deck had failed allowing water ingress into the residential building below. Upon further inspection, Proteus established that the existing roof lacked any insulation and therefore did not meet current Building Regulations. a Proteus Pro Felt® system was specified as a competitive and cost effective waterproofing solution.High Performance WaterproofingThe roof coverings and timber decking had to be removed. A new 18mm ply wood deck was installed to the roof pitches before a high performance Proteus Pro Felt® system could be laid. This incorporated 120mm Proteus Pro-Therm® insulation to ensure all current building regulations were met. Due to the 45 degree pitch of both the front and rear roofs, Proteus needed to design a fixing method to ensure the felt and insulation did not slip in the warmer weather. Proteus Waterproofing worked closely with the Proteus Approved Contractor, to ensure the project was delivered to a high standard.Health & SafetyWhen working on public buildings, safety is always of utmost importance. Proteus Pro-Felt® Self Adhesive Mineral Capsheet has the highest European Fire Rating, BROOF(t4), making it the ideal felt to use on public building as the risks to operatives and members of the public are greatly reduced. All Proteus Waterproofing specifications promote fire safe installation methods conforming to the industry lead Safe2Torch guidelines.Long Term PerformanceProteus Pro-Felt® is a High-Performance range of bituminous membrane system, tested to perform in extreme temperatures and weather conditions. It has class leading modified bitumen content which allows the flexible membrane to move with the building and ensure long term durability and performance with guarantees available up to 25 years.

The London Olympics Aquatics Centre has been given a watertight seal with the application of Preprufe® waterproofing membrane from GCP Applied Technologies. GCP was able to meet the architects’ full requirements combining the Preprufe® comprehensive waterproofing and gas protection with a range of fully compatible pre-applied and post-applied membrane systems. The specification of the Preprufe® waterproofing system has ensured that after the Olympic games, the facility will continue to benefit from long term waterproofing and gas protection performance befitting of the Olympics Legacy. Find out more.

Rhenofol CGV PVC single ply membrane from FDT was selected to waterproof the viewing terraces to one of Britain’s most hallowed sporting venues, The KIA Oval, London. Surrey County Cricket Club wished to upgrade its facilities and the old Vauxhall Road stand was demolished in 2005. It was replaced with a prestigious multi-tiered new build facility to include seating, hospitality areas, conferencing facilities and media suites.

Delta’s Structural Waterproofing Consultant, Paul Green, CSSW alongside Delta’s MD, Kevin Dodds, were appointed to the design team to collaborate with the Architects, Engineers, Main and Sub-Contractors to fulfil the role of Waterproofing Design Specialists in providing a reliable, watertight solution for this substantial project.The large-scale basement project consists of a 4-storey deepbasement located close to the River Thames in Central London.The proposed subterranean space would offer multiple usage. This complex project required a waterproofing design which is, able to cope with intermittent/regular hydrostatic pressures created not just by groundwater, but also geographical tidal impacts from the river Thames and potential stress challenges caused by the surrounding infrastructure such as heavily trafficked railway lines in the development’s vicinity.Structures that experience a high level of vibration fromsurrounding infrastructure can, over time, have a high propensity to suffer cracks, which could lead to failure of some waterproofing solutions, so therefore careful considerations should be incorporated into the overall waterproofing design from those aspects and, the impacts these factors can have on an elected waterproofing system.Delta’s design philosophy rotated around creating a robust and suitable waterproofing design, the structure design, a continuous system, sequencing and installation, future maintenance, and serviceability, whilst able to fulfil requirements set out in BS 8102:2022 Protection of below ground structures against water ingress. Code of practice. The British Standard which governs waterproofing of substructures.

The Blackheath Hospital, a private hospital made up of Victorian houses that from the classical façade of the building required a new waterproofing membrane to the plant room roof, after reports of water ingress to the building below. The leaks were caused by the existing box gutter around the slate pitched roof which was found to be an aged timber deck with a broken down felt membrane. The client requested a high performance, cold applied system, therefore Proteus Pro-Cold® was specified.High Performance WaterproofingDue to the nature of the building, a noise free, low odour, cost effective solution was required. A recovery board, bonded in Pro-Bond Foaming Adhesive was first installed, followed by the application of Proteus Pro-Cold® in a two coat fully reinforced process providing a guaranteed 15- year system. Proteus Waterproofing worked closely with the Proteus Approved Contractor to ensure the project was completed to a high standard. Health & SafetyAs the hospital building was constantly operating, the system needed to be installed with minimum noise and disruptions, ensuring the hospital could still operate and patients were not disturbed. As Proteus Pro-Cold® is cold applied it met all the health and safety criteria, as well as keeping disruptions to a minimum. Proteus Pro-Cold® is also certified with the highest European Fire Rating BROOF(t4). Long Term PerformanceProteus Pro-Cold® offers a low maintenance, durable waterproofing and protection solution for a range of new build and refurbishment applications. It is cold applied, eliminating the risk of fire and once cured, provides a completely seamless waterproof protection and has excellent UV stability, making it suitable to use in all climates. Proteus Pro-Cold® forms a seamless, fully adhered membrane and has BROOF(t4) certification.

The existing waterproofing had failed due to a previous poor installation, the result of which saturated the insulation below the exterior roofing. New high performance solutions were specified that included a range of IKO roofing waterproofing systems to protect both the flat and pitched roofing areas of the building. IKOslate, a robust and durable tile was specified for the pitched roof due to vandalism and the fragility of the current system, whereas a tapered scheme was required for the flat roofing - IKO Ultra Prevent alongside a cold applied liquid solution (IKO Polimar) for the more intricate details.

As part of an on-going, planned flat roofs refurbishment, the Hotel flat roofs existing, ageing coverings were found to be in various state of deterioration. Following surveys by Proteus Waterproofing, some of the flat roofs were assessed to be still suitable to be overlaid, some had aged beyond economic recovery, requiring removal. Proteus Waterproofing were asked to design and supply a high-performance replacement, selecting the most suitable roof system from its wide range, for each roof. This phase required:One roof to be overlaidOne roof to be stripped back and upgrading the roof deck by over-decking with new 18mm plywood.Once prepared, both roofs received the new Proteus Pro- Felt® Ultima Plus Built Up Roof system with Proteus Pro- Therm Insulation PIR to deliver the required performance to comply with Building Regulations Part L and BS 6229:2018.  Long Term PerformancePro-Felt® Ultima Plus BUR offers a durable waterproofing and protection solution for new build and refurbishment projects, is BBA Certified and available with a range of guarantees.High Performance WaterproofingWorking on occupied buildings, safety is always of the utmost importance. Pro-Felt® Ultima Plus BUR system reduces risk by incorporating a cold installed, self-adhesive air vapour control to be bonded to the new plywood roof deck. Proteus Pro-Therm Insulation is cold bonded to the air vapour control, to comply with current Building Regulations Part L. The specification was prepared according to the NFRC ‘Safe2Torch’ guidelines.

Liquasil Ultra PU is a BBA approved flat roof waterproofing membrane. Cold-applied, the system comprises an embedment coat, into which a chopped strand reinforcement mat is laid to provide exceptional strength. The mat dissolves and allows for hand-moulding around difficult details. Once cured, the Liquasil PU UV coat is applied to provide additional strength, durability & protection. The completed system comes with the unique Latent Defects Insurance Guarantee, which provides cover for Professional Design. Specify with 100% confidence. Made in the UK.

Established in 1976, Corfe Hills School in Dorset welcomes over 800 secondary and sixth form students through their gates each year. Since achieving Academy status in 2011, Corfe Hills have been looking ahead, keen to develop a schedule of works for building improvements that support the school’s growth and ultimately safeguard the building’s future.Over time, the existing roofs across the site had experienced continuous water ingress issues that needed to be addressed. Multiple roof penetrations from the roof lights were leaking water; the existing waterproofing system and the overlaid bituminous membrane were failing in places resulting in splits and blistering, and the metal roof had rusted beyond repair. With rain seeping directly into the classrooms below, action had to be taken to ensure the site was remedied to a safe and comfortable learning environment for students and staff.Garland Technical Manager, Paul Boole, was instructed by building surveying firm Kendall Kingscott to support Corfe Hills approaching CIF bid for the critical roof refurbishment works. An essential part of the brief was to ensure that the buildings were not only fully waterproofed but to upgrade the overall thermal efficiency, alongside securing a robust 20-year guarantee.In support of the CIF bid, Paul carried out a thorough investigation of the school’s roof assets for Kendall Kingscott, producing core sampling data, detailed condition surveys and U-Value calculations to outline a clear specification for the works required. 

On the Grand Union Canal in Hemel Hempstead, the Nash Mills Wharf housing development features a range of stylish new build 1-4 bedroom houses and luxury apartments offering high quality waterside living in this Hertfordshire town.With a waterproofing system required to protect the concrete podium above the ground floor car park, a selection of hot and cold applied products were provided by Proteus Waterproofing that met the requirements of the client Linden Homes. The licensed roofing contractor worked with Proteus Waterproofing on a dual system specification which included the fast and economical Proteus Hot-Melt waterproofing system, and for the intricate detailing around upstands and to avoid hot works around the plastic soil and vent pipes, the Cold Melt® waterproofing system was the ideal solution.Fast, hassle-free applicationWith the podium deck covering 3000m2, the Proteus Hot Melt® system was the optimum waterproofing solution for a robust, cost effective, seamless and fast application. This solution worked exceptionally well for the Licensed Contractor and is compatible with the fast applied Cold Melt® solution which was used for high detail items including plastic soil and vent pipes and upstands. There was also the added challenge of wet brickwork and an exacting building program to keep to. To overcome this problem, Proteus isolated the wet substrate with Pro-DPM Primer (Damp Proof Primer) which can be applied to green concrete 3 days old and then followed immediately by the Proteus waterproofing system. This enabled the Cold Melt® to be installed on to the vertical elevations will no loss of time.Quality controlProteus Waterproofing worked in close partnership with its Licensed Contractor to successfully deliver the project to a very high standard within the required timeframe.Long term performanceIncorporating recycled rubber-crumb and other organically grown products, Cold Melt® creates an elastomeric, seamless, cold applied membrane and can outlast the lifetime of the substrate on which it is installed.

Cygnet Hospital, a new state of the art medical campus based in Maidstone required a waterproofing membrane for the newly installed concrete and metal decks. Proteus Waterproofing applied their Cold Melt® membrane, to provide a seamless leak protection to the inverted roof, that was then finished with Proteus Waterproofing’s Pro-Living® Green Roof. High Performance WaterproofingFirstly, the metal deck for the main roof was prepared and overlaid with Pro-Vapour Control SA, a self-adhesive bituminous waterproofing membrane that forms a barrier against vapour and gases, ready for the Proteus Pro-Therm PIR Insulation and Cold Melt® waterproofing installations.Proteus Pro-Therm PIR is stable, rot proof and will remain effective as an insulation system for the lifetime of the waterproofing covering, making it suitable for new builds. Cold Melt® waterproofing was then overlaid to the main roof and upstands. The exposed areas were covered with Cold Melt® UV Top Coat, making the waterproofing UV stable. Cold Melt® provides a seamless leak protection and is cold applied, therefore removing the risk of fire. The roof was completed with a Pro-Living® Green Roof providing ecological benefits for the building. Health and SafetyWhen working on occupied buildings, safety is of utmost importance. Proteus Waterproofing’s Cold Melt® system is cold applied and low odour, therefore meeting all necessary health and safety requirements. Cold Melt® is quick, simple and safe to apply allowing the Proteus Approved Contractor to successfully complete the project to a high standard within a short time frame, whilst ensuring the planned building works continued to run on schedule.Long Term PerformanceIncorporating recycled rubber crumb and organically grown products, Cold Melt® creates an elastomeric, seamless, cold applied waterproofing membrane. Cold Melt® system can include inverted roof insulation and, with or without insulation, can be designed as a paved, ballasted, green or brown roof. The membrane is made in the UK, does not become brittle with age and is BBA Certified to last the life of the structure.

Our purposeOn behalf of Amye Defence Services, Acclaim Contracts Ltd was commissioned to address the aging roof of the building, which was leaking despite receiving patch repairs over the past 20 years. The Ministry of Defence’s Project Allenby/Connaught demonstrates the Government’s commitment to maintaining defence estates.The £1.45bn scheme is a 35-year commitment to providing modern, high quality, fully serviced, purpose built living and working accommodation for 18,700 soldiers. It involves the new build and refurbishment of more than 550 buildings across Salisbury Plain and Aldershot, including upgrading Allenby’s Building 51, otherwise known as the Sports Pavilion.Our solutionAcclaim turned to Langley to provide all the material necessary to complete the work. After stripping the original roof to the existing plywood deck, the team fitted new treated timber around the perimeter and new uPVC fascia. The current edge trims, perimeter check kerbs, and extended flues were removed to ensure regulatory 150mm clearance was achieved once the new roof covering was installed. Langley’s HT180 attachment layer was loose-laid and nailed into place to provide appropriate protection to the timber deck while the “hot works” above were undertaken. Langley’s TA-20 Flat Roofing System was installed across the roof area, with insulation to achieve the regulatory requirement of 0.18W/m2K. SA-20 Flat Roofing Detailing System was used in fire risk areas, in line with Safe2Torch guidance. The range of Langley’s TA systems complies with Broof(t4) classification and has a Local Authority Building Control (LABC) assured accreditation. Under MOAT 31, Langley’s Parafor 30 GS (cap sheet to the TA system) achieves a ‘resistance to damage” rating of R4. It is independently certified by the BBA to deliver a life expectancy of at least 40 years, one of the longest available in the UK.Acclaim fitted Langley’s ParaFurb Refurbishment Outlets to upgrade the internal outlets where possible, cleaning and priming those where the design precluded the use of ParaFurb. We installed New Code 5 lead pipe sleeves to flues and hot pipes to a minimum 150mm above the waterproofing. In addition, Langley’s ParaTrim GRP Edge Trim was fitted to all the kerbs.“It carried great weight with us that Acclaim worked in partnership with Langley, who offers an independent insurance-backed guarantee. That is indicative of pride and confidence in its work, giving synergy with Amey. It also gives us, and our client the Ministry of Defence, that the refurbished estate at Allenby will serve and be fit for purpose for decades to come.”Will Loates, Service Delivery Area Manager, Amey

The Proteus Waterproofing roof survey carried out found the existing flat roof system to be saturated. The existing roof build-up needed to be stripped back to the roof deck, with the main challenge of the roof refurbishment being the low up-stand heights available to the penthouses.The project required a flat roof system manufacturer involved at the initial roof survey and specification design stage, followed by the manufacturers technical back-up to assist with unforeseen and unexpected situations to ensure a successful installation of the new roof systems.High Performance WaterproofingThe terrace roofs above hated spaces demanded a waterproofing system with BBA certification. The fully bonded and seamless Pro- System® Plus was selected for its high performance and low odour, in conjunction with Proteus Pro-Therm Insulation to improve the roofs thermal performance and reduce the existing condensation risk.The flat roofs that were not above heated spaces required Proteus Pro-System® Plus low odour, seamless waterproofing overlay. Proteus Waterproofing worked closely with the Client and the Proteus Approved Contractor, which also acted as the Main Contractor, to ensure the installation complied with the specification design.Health & SafetySafety on construction sites is always of the utmost importance, as well as keeping disruptions to other trades to a minimum. Proteus Pro-System® Plus was selected for its high performance, low odour, phased cold installation and seamless waterproofing.Long Term Performance​Proteus Pro-System® Plus creates an elastomeric, seamless, cold applied waterproofing membrane. The Proteus Pro-System® Plus system can include warm roof insulation. The membrane does not become brittle with age, is BBA Certified with a durability statement of at least 30 years.

Delta Registered Installers Timberwise (UK) Limited were called upon to offer a waterproofing design to this Grade II Listed property to meet the requirements of BS 8102:2009 to achieve a dry habitable living space, defined as a grade 3 environment.

When specifying the most appropriate method of waterproofing for a new-build basement it is advisable to follow the recommendations within BS 8102:2009 ‘Code of Practice for Protection of Below Ground Structures Against Water from the Ground’. The standard advises on the types of waterproofing available and confirms the performance grade to be achieved. This project required Grade 3 protection – no dampness or water penetration acceptable.

Vaults are a common feature of 18th and 19th century buildings in Bath. Originally built to support the cobbled streets above and were a constructional response to the precipitous topography that surrounds Bath, in order to provide a level site. Many of the vaults within historic Bath suffer with water ingress and damp related problems. Incorporating best practice guidance - Type C Waterproofing Systems (BS 8102: 2009) a Type C System was used to keep this historic vault watertight and dry.

The Koster TPO Single Ply membrane was selected to waterproof the flat roof on this new build development. The design called for a warm roof system installed over a timber deck followed by a sedum blanket (on protection membrane).Koster TPO 2mm Fleeceback membrane was used as it is highly resistant against mechanical damage, fully weldable so no weaknesses and it will not contaminate any of the planting such as a PVC membrane would.The Slate Grey RAL 7015 colour was selected to compliment the Zinc cladding.

The purpose: Water penetration into classrooms alerted theOfsted “outstanding” rated Colchester County HighSchool for Girls in Essex to a problem with its roofs.Its premises advisors, Archer Building Consultancy,turned to Langley to offer technical support for themost efficient best-value rectification, with fundingprovided by the school’s governing body, The AlphaTrust.Our solution: We carried out an in-depth roof condition report which highlightedthat the four flat asphalt and 10° pitched copper standing seamroofs urgently need repair.We advised the most efficient solution and use of resources wasto strip the copper roof back to the plywood deck and form a newwaterproof layer from our TA-30 Flat Roofing System and theasphalt roofs overlaid with TA-30 and our Liquid Roofing System.By leaving the original roof, we were able to minimise disruption.In the process, we assessed the roofs for their suitability forphotovoltaic (PV) installation, then helped address energy costs:one over a three-storey building was deemed appropriate. Finally,in partnership with Archers, we supported the detail required toapply for Salix funding to cover the supply and installation of thePV array.

The new Ardley EfW Plant, including a 12m basement built over an Artesian Well, presented a host of construction challenges. Due to the extreme water pressure created by the Artesian Well, as well as ammonium salts in the ground, Fosroc worked closely with Tata Projects specifying a solution using Proofex Engage to provide a watertight, chemically resistant barrier, with Supercast SW20 in the construction joints to reinforce the floor to wall joint. Fosroc provided a ‘total solution’ package to ensure Tata Projects could feel confident with the proposed specification, from basement waterproofing, to grouting crane bases, flooring and sealants.

Nestled between parklands, at a mere stone’s throw from Lea Valley and Hackney Marshes, and in the heart of Queen Elizabeth Olympic Park with its world-class sporting facilities, an incredible new neighbourhood is arising. Chobham Manor is the first of five new developments to be built in this history-rich area in Stratford, east London. 6,800 new homes will be constructed in total over the next 20 years, along with health centres and multi-purpose community spaces. SOPREMA provided the waterproofing solution and insulation materials for Chobham Manor, as well as collaborating closely from the design stage onwards with Taylor Wimpey, one of the top-five housebuilders in the UK, and SOPREMA-approved contractor Skyler Contracting.

To fulfil the requirements of BS8102:2022 and BS 8485:2015+A1:2019 a strategy to develop a specification which combines structural waterproofing and ground gas protection were required for this refurbishment project.The project involved creating additional living space to an existing mid terrace Victorian property in W12. The site of the property, whilst not being located on contaminated land was identified as being potentially at risk, it was near what is classed as contaminated land (an old brick yard).To satisfy Building Control requirements gas protection measures were required to meet BS 8485:2015+A1:2019.Site investigations at former brickworks and landfill sites are within expected UK guidelines for contamination. Ground investigations incorporate both soil sampling, ground gas and groundwater monitoring.In accordance with Table 3 of BS 8485:2015+A1:2019 a residential building is classed as a Type A building, creating a “high risk” requirement for ground gas protection. With the structure requiring a Grade 3 habitable environment attention as required to offer a system which meets all requirements.

An innovative and comprehensive waterproofing solution was required to facilitate a £18m state of the art hotel and with a double story basement in Englefield Green, near Windsor. The hotel will offer exceptional overnight breaks, award-winning dining & an exclusive spa facility once completed.

For the redevelopment of a former builder’s yard in Greenwich into a new build block of live-work units and residential flats, the developers were looking for a roof system which would offer long term waterproofing integrity, exceptional green credentials and enhanced aesthetics. The proposed green roof system would also reduce water run-off, create a wildlife habitat and help towards securing Code for Sustainable Homes Level 4.With a waterproofing system required to protect the concrete deck above the flats, a selection of cold-applied products were provided by Proteus Waterproofing that met the client’s requirements. The specialist contractor worked with Proteus Waterproofing on a specification which included the Cold Melt® inverted waterproofing system, Proteus Pro-Therm XPS and finished with a Proteus Pro-Living® green roof.Fast, hassle-free application The 500m2 Cold Melt® insulated Pro-Living® roof system was selected by the client and contractor for its ease of installation, cold application and all-round green credentials. After the pre-cast concrete roofing panels were craned into position, the joints were made good ready to accept the Cold Melt® inverted roofing waterproofing system. The inverted roof system incorporated Cold Melt® and Proteus Pro Therm XPS 150mm insulation. A Proteus Low-K Membrane was then applied prior to the application of the Pro-Living® green roof to complete the system build-up.Quality control Proteus Waterproofing worked in close partnership with the Contractor to successfully deliver the project to a very high standard within the required timeframe.Long term performance Incorporating recycled rubber-crumb and other organically grown products, Cold Melt® creates an elastomeric, seamless, cold-applied membrane and can outlast the lifetime of the substrate on which it is installed.

The waterproofing to a large residential flatted development in London was carried out using the Koster TPO membrane.This warm roof design incorporated the Koster TPO Fleecebacked membrane mechanically fixed through PIR insulation, Koster Vapour Barrier and into the timber substructure as per the wind load calculation.An interesting project with many challenges that were all individually designed by the Koster technical team in collaboration with the project architects.The final roof incorporates hard standing areas, sedum and green roof sections, a solar panel farm and decorative stones.A beautifully deigned and usable area providing residents an amazing view over London.

Perry Hall Academy, a large primary school built in 1949, with original waterproofing still in-situ. IKO assisted the Academy funding bid by providing a detailed survey report, including intrusive core sample analysis. The roofs were suffering from water ingress, cracks in the mastic asphalt, pooled water and poor heat retention, so decision was made to replace the roofs throughout. New rooflights were also specified to allow more natural light in while the design chosen reduced the external noise transmission. IKO worked with specifier Concept Education Services to deliver the project (some work during term-time) within 6 months.

JACKOBOARD® by BEWI offers many benefits for installers of wetrooms and bathrooms. JACKOBOARD® is a waterproof, weight-loading and thermally insulating construction board for use in all types of tiling jobs.Critically, because it is manufactured from 100% waterproof XPS, there is no need to tank wetrooms constructed using JACKOBOARD®, either with a waterproof membrane or a paint-on solution. This saves the installer both time and money, since a separate tanking system is not required and only the joints where the boards meet need to be taped.The NHBC Standard states that “backing surfaces may require protection from a suitable tanking system”.“This guidance is completely correct,” says Martin Harragan from JACKON by BEWI, “but it should not be interpreted to mean that if you are using an XPS backerboard, such as JACKOBOARD®, you have to tank the entire substrate of your wetroom. The closed structure of an XPS board means that it is totally impossible for water to pass through it, in the way that it would through a fibre cement board for instance.”JACKOBOARD® is keen to communicate this message to the many different trades who get involved in the installation of wetroom systems, from the shower tray upwards. Although there are wetroom specialists, this job is often down to plumbers, M&E contractors, tilers, dryliners and flooring contractors. So, as wetrooms continue to increase in popularity, there are different trades who need to be aware of the benefits of XPS backerboards.While offering the benefits of XPS, JACKOBOARD® can also offer a price advantage in the marketplace, due to the fact that the company manufactures its own foam, giving it complete control over cost, product quality and sustainability of manufacturing processes. These factors have enabled JACKOBOARD® to become the UK market leader in XPS construction boards.

The purpose: Energy savings of £¼million over 20 years at just two of its sites are predicted to be achieved by London Fire Brigade through effective roof refurbishment using our Roofing Solutions. The brigade identified that the roofs at Erith and East Ham Fire Stations were in need of refurbishment. Numerous intermediate repairs had already been undertaken. An efficient solution was needed to help London Fire Brigade optimise best value in its asset management and reduce its requirement for planned- or unplanned- maintenance.London Fire Brigade therefore turned to Currie & Brown construction management consultants to oversee the design and execution of the refurbishment projects under a contract management framework agreement in place between the two organisations. We was called in to assess the roofs and advise on a course of action. Data driven roof condition reports from surveys were taken across the two premises. We highlighted that the roofs were beyond economical repair and needed new waterproofing and insulation- a U value of 5.00W/m2K was discovered in one roof area, against the Regulatory threshold of 0.35W/m2K and best practice 0.18W/m2K. Our solution: We advised that in the main, overlaying of the existing roof covering with CP-20 Paracoat Cold Polyurea Liquid System (warm roof) application was the most-efficient and cost-effective solution.The over-laying using the CP-20 system satisfies London Fire Brigade’s policy of preference for flame-free, with no roof replacement needed this minimised waste to landfill.Our Approved Contractor CWG Group won the contracts to undertake the upgrading, working to Langley’s detailed individual specifications for each site.At East Ham Fire Station, four main roof areas plus a separate ancillary building were addressed.LangGuard free-standing safety rail was installed around the perimeter of roofs 1 and 4.The final touch for the field roof area was provided with Paracoat Fast SF slip-inhibiting finish to agreed walkway areas.At Erith Fire Station, the refurbishment involved upgrading two roof areas including a rooftop tank room and adjoining canopy of corrugated PVC over the Station building, and a separate stores roof.

he NHS Trust commissioned Breath Energy to review its estate, recommend and manage a programme of works to significantly reduce energy costs and CO2 emissions.Central to the works was the external upgrade of the main Epsom Hospital premises, the Wells Building, to improve thermal performance and address failings in the building fabric. The existing roof areas had failed and were allowing water ingress, potentially not only damaging the building fabric and energy efficiency but essential hospital equipment.Langley’s project team had to devise solutions that enabled the whole building exterior- facades and roofs – to be upgraded while the seven-storey hospital remained operational. Added to the complexity, the project began while Covid-19 restrictions were in force.Our solution: Detailed roof surveys prior to work commencing enabled us to identify potential problems and advise on effective solutions in advance.We recommended full strip-up of the roofs, as the existing had perished beyond economical repair. We advised new construction with TA-25 W Flat Roofing System on the main roof, stairwell roof and plant room areas. The TA-25 system is independently certified by the BBA (British Board of Agreement) confirming Broof (t4) classification. It also has LABC assured accreditation to provide support with regard to building control. The inclusion of insulation meant the new roof achieved the current requirement of 0.18W/m2K.While a full strip-up of the two terraces and balcony would also have been the preferred solution, the depth of work would have been impractical as the hospital’s operating theatres were below, and in use. Our solution was to remove the existing top layer and replace with PC-20W Liquid Roofing System and install breather vents to address moisture within.

The TaskOriginally a garage for a local car showroom in the town centre, The Forum has most recently been a storage facility until the College began redevelopment of its kitchens in a 12th Century Grade 1 listed building. This provided improved and expanded catering facilities. During the works, the College still needed kitchen and dining facilities, prompting the re-purposing of The Forum.Northmores Project Management Consultants were contracted by the College to manage the project, designed by Paul Vonberg Architects, to future-proof the building.The Outcome“It was a very tricky project. Logistically, being right in central Cambridge, and during COVID, we had to ensure we were rigorous in our safe practice. Fortunately, the new internal design of the Forum meant it was easy to operate a one-way system for any internal workings making good the linings where the rooflights had been and redecorating. From a reroofing perspective too it was complex. The team at Langley devised a practical solution and were always on hand to support us with technical advice if needed.”

Salisbury Walk is part of the Girdlestone Estate in London, and the last phase to be upgraded by landlord the London Borough of Islington as part of their commitment to delivering decent homes standards.The TaskWorking to our detailed specification, Opus stripped the existing profiled metal roof and built up our TA-30 Flat Roofing System, installing insulation to achieve 0.18W/m2K as advised by current Building Regulations. Ventilation and rooflight hatches were also upgraded and new upstands fitted.The Outcome“Having achieved such a positive result in the refurbishment elsewhere on the estate by utilising the services of Langley and Opus, it gave peace of mind for all stakeholders to re-apply that formula in other works. It brings us a valued perspective, enabling us to make informed decisions going forward about the condition of the estate, knowing we have consistency in approach, design, materials and application. We also have the peace of mind, going forward, that the roofs are all upgraded to a high standard and are assured for decades to come.”Theo Petrou, Mears Group Project Manager

Newton System 800 used to damp proof a school in Brighton which required multiple damp proofing treatments as part of its refurbishment. Installed by Newton Specialist Basement Contractor CavityTech.

The scope of the project was to facilitate a solution for a damp, salt and mould covered lightwell wall, which was impacting negatively on staff who thought their office views were unsightly and unhygienic.