"formwork formwork liners"

The Liner is a collection of fifty-two, 1, 2 & 3 bedroom apartment and penthouse building that was a regeneration of a former hotel. The symbolic and distinct design is inspired by the prow of a ship breaking through the waves in salute to Falmouth’s proud sailing traditions. With south-facing sea views over Gyllyngvase Beach, The Liner was Shortlisted for CE South West Award 2022 ‘Building Project of the Year’.Cellecta’s HiDECK Overlay 18 was specified by Poynton Bradbury Wynter Cole Architects as the overlay flooring solution. It’s ideal for flooring applications incorporating an underflooring heating system due to its high thermal conductivity which provides rapid reaction times, saving on running costs. In addition, its high density makes it perfect for a variety of acoustic applications.Acorn Property Group was awarded this 12,000m² contract for this development in Falmouth.

Valley gutters with limited access on fragile asbestos cement roofs are always difficult to maintain and repair. A liquid gutter liner is often the only solution in cases like this and none are easier than Liquasil’s Gutterseal system. The metal gutter was first cleaned and dried, then treated with a coat of Liquasil’s corrosion treatment before being over-coated with Liquasil one liquid gutter liner. All joints were treated with Liquasil Non Sag Sealer, providing a fleece-free, very strong joint and seamless gutter lining.

Customer: Mark Greensill, Rugeley, West Midlands, England Background to the IssueMark Greensill from Rugeley in the West Midlands had a major issue of weed ingress in his garden pond. The garden feature was created 15 years ago and after fitting a brand-new pond liner just last year the very aggressive weed Mare’s Tail (also commonly known as horseweed) had broken through a seal and was growing rapidly in the pond. The creeping stems of this highly destructive plant may go down deep below the surface, making them hard to remove by digging out. CT1 Provides and Environmentally Compliant SolutionMark needed a long-term solution to repair the liner without replacing it, whilst being environmentally friendly to ensure no detrimental chemical impacts on the pond life and ecological biodiversity of the surrounding areas. Containing neither solvents nor highly reactive isocyanates CT1 is environmentally compliant and perfect for all pond and water feature maintenance as it will not affect any aquatic plants. Why Choose CT1?Having seen CT1 in his local hardware store and previously watched videos of internet sensations The Bald Builders sticking a skip to the ceiling and driving a Ferrari under it, Mark was sure it would provide the answers to his problem without having to drain all 900,000 litres of water out of the pond.For ease of access to remove the Mare’s Tail he pumped out approx. 250,000 litres of water. This made identifying where the harmful, spreading weed had damaged the pond liner very easy.As the CT1 is a highly deformable, polymer enriched sealant and adhesive with 350% more elongation it can be used in wet and damp conditions where increased flexibility, resistance to environmental changes and UV light are important.The Application of CT1Mark cleaned any silt and filamentous algae off the effected areas to ensure full contact of CT1 on the pond liner repair.This created a perfect seal that would prevent further ingress of damaging weeds while simultaneously preventing water seeping out of the pond. Another Successful Result Provided by CT1!The repair of the pond liner is a complete success, and the garden feature has been restored for the family to enjoy and local wildlife to benefit from. Mark said;“I’m absolutely delighted with the result. I thought I was going to have to remove and replace the while pond liner. It would have been so much work. CT1 provided such a great solution; cost effective, time saving and environmentally safe for the pondlife and local habitat.”Once again CT1, which comprises of the very best raw materials, has demonstrated why it’s the number 1 sealant and adhesive available. CT1 is always leading the way in quality, service and advancements being made in the construction industry.

Cordek were invited to propose a re-useable formwork solution to pre-cast the two spiral staircases within Phase One’s residential block, Circus West. A combination of detailed planning and modern digital methods of manufacture resulted in a cost effective formwork solution which achieved the quality and multiple reuses required from this demanding project.

Luxury coastal apartments able to withstand the elements with Sika roofing system. Owing to its beautiful coastal location, The Liner, a nautical-inspired £35 m residential new-build in Falmouth, presented a compelling roofing challenge. Exeter-based roofing contractor, Progressive Systems, assisted by Sika, took on the task, installing a roof to withstand the harsh seaside conditions with an immaculate finish.Green roof composed of:Sika® Sarnafil® G410 18EL PVC Single Ply Waterproofing Membrane.Sarnavap® 5000E SA Vapour Control Layer.Sarnafil® Primer 610.Sarnatherm® ‘G’ insulation.Sikalastic® 625.Sarnafil® G445-13 PVC Protection Sheet.Sika® Green Roof System.

Cordek was brought on board to provide a formwork solution for feature balconies on one of the new apartment developments at the Great Eastern Quays development in East London.

Cordek were tasked with providing a formwork solution to enable the main contractor to cast the ‘knuckle’ intersections between the escalator shaft and the levels above and below.

Cordek were able to assist in providing a formwork solution for the construction of a new 8000m² elevated bus deck which will connect to Westbourne Park Bus Garage.

Cordek called upon to aid with the practicalities of a formwork solution to create the six concrete diving platforms in a scheme featuring few straight lines at the iconic London Aquatics Centre, built for the London 2012 Olympic Games.

Cordek designed and supplied a simple and cost effective formwork solution for the cantilevered balconies at Baltimore Tower, a £300m, 45 storey luxury residential development by Baltimore Wharf SLP. The new twisting tower has been billed as an 'iconic new landmark for luxury living' in London.

This communal area in a residential building in Toulouse is a bright and relaxing space designed to encourage interaction among the residents. Milliken's award-winning Colour Compositions modular carpet planks and First Call LVT provide a rich and vibrant injection of colour and shifting textures. Contrasting tones of Milliken's Formwork colours range give the TV/gaming room a fun, dynamic aesthetic.

Cannon Green’s RC cast in situ polished concrete staircase is an Ocubis project in conjunction with John Robertson Architects (JRA), Civic Engineers and Six Smith Build. Lazenby built and installed the 21m long, 7m high and 7.5m wide (at the top) inverted amphitheater cast in situ Pewter concrete staircase. This staircase was designed by JRA and structurally engineered by Civic Engineers, incorporating BIM modelling due of the intricacies of the reinforcement design. This self-supporting staircase is tied into the structure with a steel stringer to convert the loads and moments down through the steel columns.Lazenby installed traditional formwork to create the stepped soffit that leads up to the inverted amphitheatre steps. Lazenby then installed a false work system (from Ischebeck Titan/Inform UK) enabling the formworkers to create the radius former inverted amphitheatre undercarriage that is visible from the restaurant (Drake & Morgan). The reinforcement was then added to the soffit and steps; the carpenters then added formers and attached nearly 700 DDA studs to the formwork prior to the casting of concrete.Lazenby’s integral-coloured Pewter polished concrete was batched on site into a C32/40 concrete supplied by London Concrete. The project used approx. 24 cubic meters of concrete and 6 tonnes of steel reinforcement. Ground floor to the top landing and seating area is just over 4m high, 21m long and 7.5m wide with 24 shallow risers and 3 functional landings. The first 3m wide step widens to a 7.5m inverted amphitheatre style landing featuring single and double height steps.Lazenby’s 8 master craftsmen were onsite for the duration of this 12-week project. Lazenby won the Cannon Green project based on the ability to deliver unrivalled experience for projects of this scale and magnitude. Engineering from Civic Engineers, design by JRA and experience and know-how from Lazenby’s master craftsmen created a steel and concrete masterpiece of exacting standards.

A scheme designed by the award-winning Architects Guy Hollaway, The Urban Sports Park in Folkestone includes the world’s first multi-storey skatepark. The state-of-the-art facility is set on four levels and includes a skating area, climbing wall, new boxing club and café. Cordek were requested to design and supply a bespoke formwork solution to aid the construction of the integral, reinforced concrete slab soffit for the large skating bowls on the first floor.

The Ely southern bypass is a new road connecting the A142 at Angel Drove to the Stuntney Causeway. It is hoped that the bypass will help to ease congestion in and around Ely by providing a new link to the south of the city. The 1.7km long single carriage way road includes a 300m long viaduct crossing the Great Ouse River, for which Cordek were called upon to supply a bespoke formwork solution for the construction of the complex geometrical details of the supporting piers.

This metal gutter was leaking in various places and several repairs had been undertaken over many years. Liquasil’s liquid gutter lining system was specified because the SWT primer actively treats any rust that is present and prevents further rusting. All joints and fixings are permanently sealed with Non-Sag Sealer. Non-Sag Sealer is a thixotropic coating with 1400% elasticity that easily copes with thermal movement associated with metal gutters. The final stage is the apply a single coat of Liquasil One along the entire length of the gutter, to provide a seamless, leak-free finish.

The Royal College of Pathologists have relocated their London Headquarters to the rapidly changing area of Aldgate, on the Eastern fringes of the city. The new seven storey structure replaces an existing office block, providing a flexible and environmentally efficient building to house their growing needs. The building design includes major conference facilities, meeting rooms, offices, a multi-function auditorium, exhibition space, restaurant facilities and accommodation. Cordek were asked by the specialist concrete frame contractor Oliver Connell & Son to devise a formwork system to allow the construction of ribbed concrete floors.

The metal roof was first prepared using high powered jet washing equipment, to remove loose and flaking materials. Liquasil corrosion primer was applied to the corroded cut edges and the entire roof was sprayed with a single coat of Metalseal 20. The metal box gutter was heavily corroded. The loose and flaking material was removed and Liquasil’s Corrosion Primer was applied all along the gutter. The joints in the gutter were sealed with Liquasil’s unique Non-Sag Sealer and then the entire gutter was coated with Liquasil One to provide a seamless gutter finish.

Preventing punching shear failure with flat slab construction is critical and while traditional solutions such as links in the punching area work fairly effectively, there are disadvantages. They are time-consuming to install and risk installation inaccuracy and positional stability during concreting. A product that does offer a cost-effective, easy-to-install solution, is the widely used and dependable Schöck Bole shear rail; and one of the many construction sites where Bole is the system of choice is the New Green project at Rainham in Essex, where two outdated 13-storey tower blocks are being replaced by mid-rise, high density buildings, providing 197 homes. As with any reinforced concrete slab design, the New Green project is at risk of punching shear failure, which traditionally has been resolved by adding further concrete, such as the use of downstand beams or localised thickened column heads. However these measures require complex formwork and significantly reduce the benefits offered by the flat slab design. By incorporating the Schöck Bole shear rail system, installation is cost-effective and significantly faster than traditional loose links. The ready-to-install reinforcement element consists of double-headed studs with spacing bars to ensure correct positioning.  Spacers allow installation on the formwork, making installation on the construction site and in the precast plant quicker, safer and easier to achieve. The dramatically reduced fixing time far outweighs any additional material costs that may be involved with a prefabricated system.  

This project involved sealing a metal gutter in Glasgow. Leaks were present at most of the steel profile joints and rust was evident throughout. Heavy rust and soiling was first removed and then the entire length of the gutter was treated with Liquasil's corrosion primer, to prevent further rusting. Once cured, Liquasil Non Sag Sealer was applied to all joints. Non Sag Sealer has 1400% elasticity, to cope with extreme thermal movement. The whole gutter was then coated with Liquasil One to form a seamless and leak-free gutter lining.

This is a metal roof coating & liquid gutter lining project carried out at Oxford Brookes University. The roof was power washed and the gutters cleaned before application. The gutters were treated with Liquasil's rust primer to prevent further rusting, before the seamless, silicone Gutterseal system was applied. The roof was coated with a single coat of Metalseal 20 in Goosewing Grey.

Dura Grating Riser Installation | Case StudyShard Place is the third phase of the £3.5 billion redevelopment of the estate next to London Bridge station, known as Shard Quarter. Reinforced concrete frame and groundwork specialists Getjar were appointed as the formwork contractor by the principal contractor Mace and chose the Dura Composites Riser Install team to take on some of the complex install challenges of the service risers.Dura’s unrivalled expertise and full install capabilities meant they could deliver a bespoke solution for a large triangular shaped riser on all 26 storeys that required the use of galvanized steel supports and bracketing in conjunction with GRP Dura Grating to allow for cutouts to be performed whilst maintaining the integrity of the riser.

This jaw dropping project featured Lazenby Light Natural polished concrete floors and cast in situ stairs. The concrete flows from the entrance hallways throughout the ground floor and up the feature staircase to the first floor landing.This 4 week phased project saw the polished concrete floor installed first. The formwork and reinforcement for the staircase was then fixed and built off the floor. Once the stairs had been cast the brass balustrades and handrails were retrofitted to the concrete.This self-supporting concrete architectural feature staircase involved discussions with external engineers who then designed the reinforcement. The complex angles, joins to other structural elements and the sleek elegance was meticulously planned and executed. The polished concrete floor joints carefully designed to enhance the creative charm of this project.Photography by David Butler

Peri Ltd, one of the world's largest manufacturers of formwork and scaffolding, recently had Gatic CastSlot installed at its extensive multi-purpose service yard, where heavy lorries and vehicles come and go constantly.Our Area Sales Manager who worked on the project - Zach Graham revealed “The Gatic system was opted for due to its great hydraulic capacity and extensive reputation.” “This particular project required a safe solution that could bear the load of up to 40 tonnes, or D400, in technical terms. However, the Gatic range is designed to meet the needs of delivery or distribution areas where load ratings can reach up to 90 tonnes, or to F900 level, making it well within its capabilities.”Where continuous, slow turning traffic is a major consideration, Gatic CastSlot, from the Gatic Slotdrain range, is the front runner for ensuring a reliable water management system. The reputation of Gatic Slotdrain as the go to drainage range for infrastructure hubs such as airport runways and major ports, made this the obvious choice for this project.

application area: commercial kitchen extractuse type: school kitchen air extractionproject scope: line brick duct with four linersadded value: 25-year guarantee on liner, no need to fit and maintain chimney fansBackgroundVentilFlex-25 engineers were to supply and install a bespoke kitchen canopy solution for a grade 2 listed school building in Hampshire. The bespoke canopy could not be fixed to the walls or the ceiling, which was 14 meters high.The 20-metre ventilation shaft had metal supporting crossbars. This made it impossible for any rigid extraction ducting system to be installed without affecting the integrity of the structure. The client opted for a kitchen extraction system with a different approach – VentilFlex-25 RKV – a composite liner solution supplied in a flat and soft state. The bespoke-made liners are useful for ducts where access is difficult or if the duct has bends and offsets.The main challenge of this installation was to insert and inflate 4 VentilFlex-25 RKV liners simultaneously. This way the liners would fill the available duct space evenly and act as a single large liner.Statement of workThe steaming took a few hours, during which the high temperature started a chemical reaction in the composite structure which solidified the resin and gave the liners their final physical characteristics – tensile strength, high corrosion-resistance, high heat-resistance and an air-tight finish. The new VentilFlex-25 RKV liners provide an outlet for the gases coming from 3 combi ovens, 2 range ovens a fryer and a grill.

application area: domestic heatinguse type: gas fireplaceproject scope: reline leaking chimneys while maximising the flue sizeadded value: 25-year guarantee on liner, no need to fit and maintain chimney fansBackgroundTwo chimneys failed the smoke test in this heritage property located in Hertfordshire. The chimneys had to be lined to comply with fire safety regulations. Domestic chimneys often require a chimney fan after lining as traditional rigid liners restrict much of the original flue opening. Chimney fans can be expensive to fit and maintain. FuranFlex-25 linings use the maximum flue opening, which often means there's no need to fit a noisy fan.Statement of workThe had to line both chimneys and prevent further leaks before the gas fireplaces could be fitted. This was achieved using FuranFlex-25 RWV liners, which are rated for operating temperatures up to 450 degrees C. The liners were specially produced to fit the flue diameter and length, accommodating any flue bends. The soft FuranFlex liners tube are inflated using pressurised steam which will gently push the liners to extend into the chimney flue. Inflating with steam will also cause a chemical reaction which sets the material harder than steel. The finished liner is smooth, jointless and highly corrosion resistant. Thanks to the expert installation and strong product quality control, both liners are guaranteed to work for 25 years.

Sitting adjacent to Manchester Victoria station, the £185m New Victoria development is a two-phase scheme initially involving two residential towers of 20 and 25 storeys providing 520 one, two and three bed apartments. The second phase being a 13-storey office block. The façade concept is a ‘hooped envelope around a glass box’ with the ‘envelope’ consisting of vertical panels from the first floor to roof level. As with any reinforced concrete slab design, the project is at risk of punching shear failure. Which traditionally has been resolved by adding further concrete, such as downstand beams or localised thickened column heads. However these measures require complex formwork and significantly reduce the benefits of the flat slab design. By incorporating the Schöck Bole shear rail system – with its ready-to-install reinforcement element consisting of double-headed studs with spacing bars to ensure correct positioning – installation is cost-effective and significantly faster than traditional loose links. In fact, Shaun Farrell of Mayo Civils, the concrete frame contractor, comments: “We were pleased to find that by using the Bole shear rail system on the project, installation was four times faster than if we had used shear links.” Shaun goes on to explain that: “when using traditional links the installation time is increased because twelve ties are involved, six of which have to be tied to the bottom steel matt, which involves getting your hands between the rebar. With the Schöck Bole six-stud shear rail, it only involves two ties to the top matt”. 

The Beckett, a new retirement village close to the centre of Royal Tunbridge Wells, in Kent, comprises three luxury apartment buildings of three, four and six storeys. The contemporary design provides 89 quality appointed apartments with a landscaped garden, all arranged around full-height atriums, allowing natural light to reach the centre of the buildings. The upper floors are set back, providing generous terrace areas which include a ‘sky lounge‘. All three buildings are concrete frame and as with any reinforced concrete slab design, The Beckett is at risk of punching shear failure, which traditionally has been resolved by adding further concrete, such as downstand beams, or localised thickened column heads. However these require complex formwork and significantly reduce the benefits offered by the flat slab design. The Schöck Bole shear rail system counters any punching shear risk and is cost-effective and significantly faster than traditional loose links – as much as four times faster in fact. This is because when using traditional links it involves far more ties to the reinforcement matt than when using the Schöck Bole. The ready-to-install reinforcement element consists of double-headed studs with spacing bars to ensure correct positioning. Two spacer bars are welded to the vertical studs, which ensure the correct distance between uprights and the forged stud heads guarantee a perfect finishing bond with the concrete. The dramatically reduced fixing time far outweighs any additional material costs that may be involved with a prefabricated system.  

application area: domestic heatinguse type: gas fireplace project scope: restore fireplaces, rebuild chimney, line chimney ductadded value: 25-year guarantee on liner, quick and clean install, non-destructiveBackgroundThe camera survey revealed cracks in the chimney flue of a large victorian house in Muswell Hill. To protect against carbon monoxide leaks, the chimneys had to be lined before the gas fireplaces could be fitted. A flexible and uninflated FuranFlex tube was placed inside the chimney duct. Each FuranFlex liner is produced to fit the dimensions of the duct. Hot steam is used to inflate and harden the liner, fixing it in position.Statement of workThe installation took one day per chimney. The jointless and air-tight liner provides good draught and a clean and safe operation for the fireplaces. When FuranFlex liners are inflated they take up the shape of the chimney, providing maximum lined diameter and natural draught.

application area: commercial gas heatinguse type: condensing gas boilersproject scope: line commercial freestanding chimney for condensing operationadded value: corrosion-resistant, air-tight and waterproof finishBackgroundThe combustion gases from the school's boiler room are exhausted through a freestanding 28-metre brick chimney. The structure was not suitable for the wet operation of condensing boilers. FuranFlex-25 Black was the chosen lining material.The new boiler plant required a 500mm diameter flue liner but the chimney could not accommodate a rigid liner this size. A FuranFlex25 Black liner was therefore specified as it expands into the rectangular flue shape when inflated with steam.Statement of workFuranFlex25 comes as a folded and soft tube. Inflating with steam irreversably hardens the liner fixing it in place. Within a few hours of steaming the liner was ready for connecting to the boilers. The appropriate adaptors/terminals were fitted making the chimney ready for operation.

application area: commercial ventilationuse type: offices, choir roomsproject scope: reline with minimal access to ductadded value: 25-year guarantee on air-tight and one-piece linerBackgroundThe 12 existing chimney flues had to be lined to be made suitable for ventilation to serve the newly refurbished building. From each room the flues were lined with VentilFlex-25 Green up to the attic level and out the top of the chimney. The team had to carry out a precision job in a confined space with minimal access to the duct.Statement of workVentilFlex-25 Green was chosen for this project because of its versatility and its long life span. The liner is light and comes as a soft and folded tube, which makes it easy to transport and to lower into the ventilation duct. Once in position, the liner is inflated and heated up, gradually assuming and maximising the internal dimensions of the existing ventilation duct. The resulting one-piece liner is corrosion resistant, completely air-tight and it carries a comprehensive 25-year guarantee.

As part of the Wandsworth regeneration programme to increase the number of affordable homes, Wates Residential were awarded the contract to build a new, six-storey block of apartments on the Shuttleworth Road.The structure included 59 concrete balconies, all requiring waterproofing with a product with a minimum fire rating of A2-s1-d0, tested to BS EN 13501-1.Not only were Newton able to recommend a product that had already been used on a similar project this year, they were also able to recommend the expert services of Newton Specialist Contractor Arti Structural Waterproofing.The minimum fire rating of A2-s1-d0 now precludes the polyurethane and polyurea products that were commonly used on balconies, so Newton recommended the cementitious and modified-polymer Newton 103-S membrane. As well as carrying the required fire rating, 103-S can resist extremely high positive and negative water pressure, forming a hard, durable coating with a degree of elasticity that makes it ideal for protecting concrete.Arti also used Newton 203-RM to create smoothing fillets, and Newton 912-RT to reinforce the 103-S over the joints, details and changes in direction.On site, Arti also needed to work flexibly, as the programme could not proceed without the waterproofing and fireproofing of the balcony upstands. However, due to the propping of the concrete formwork to the floors above, Arti had to execute their installation in two phases of efficient and detailed waterproofing.Thanks to a meticulous eye for detail, as well as careful planning and thorough preparation of the concrete balconies, Arti were able to complete the waterproofing of all 59 balconies in two stages. This was managed as well as delivering the required A2-s1-d0 fire rating, and the installation was completed quickly without compromising the programme of the build.

The Treatment lagoon at Market Rasen is formed by creation of an earthworks bunded area, which is then lined with JUTAMAT 5000 (GCL) as a secondary containment liner; overlain by JUNIFOL 2.00mm HDPE geomembrane as the primary containment liner. Once the lagoon is formed and lined the provision of a JUINFOL 1.00mm HDPE floating geomembrane cover to contain all odours is implemented. It is therefore possible to inflate the floating cover, providing a simple means of methane storage. Currently lagoons of this type may be constructed more for their methane generation than in the past.

From humble beginnings Newcastle Airport has grown vastly and expects 9.4m passengers annually by 2035. Increasing the capacity of the existing storage lagoons is needed to continue meet current and future airport requirements. Due to the high water table there is a risk ground water pressure would cause uplift of pond liners. ABG Pozidrain was recommended to remove any uplift, manage groundwater and allow ground gases to escape. Due to being puncture resistant it also protected the liner. The multiple functions of Pozidrain removed the need for imported stone reducing vehicles to site by 200 and increasing material savings.

Noise intrusion from the flightpath into London’s Heathrow Airport has been dramatically cut at Meadowbank Adult Education Centre in Cranford, thanks to Granada secondary glazing.To meet acoustic requirements, a 6.4mm acoustic laminated glass was specified with 19mm acoustic reveal liners. The result was a 53dB reduction in external noise – the equivalent of turning the sound of a diesel bus into a whisper.

This concrete gutter had been problematic for many years, with water ingress causing much damage to the flats beneath. The bricks to the parapet wall were blown and parts had to be rebuilt as part of the project. The liquid gutter liner was applied to the base and all upstands to the gutter, including the brickwork, to perform a 100% leak-free, seamless gutter. Products employed: Liquasil One and Non-Sag Sealer.

The finish to the asbestos roof and asbestos cladding on this property was faded and the roof leaked in several places, along with the gutter. Liquasil's silicone roof coating, Asbestoseal, was chosen to seal the roof and dramatically improve the aesthetic appearance using specially made RAL colours to the match the original finishes. The asbestos cement gutter was also lined with the Liquasil liquid gutter liner to form a permanent, bonded solution.