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QA Certificate
Certificate type
British Woodworking Federation
Certificate type
CHAS
Certificate type
ISO 14001 Environmental Management Systems
Certificate type
ISO 45001 Health and Safety Management
Certificate type
ISO 9001 Quality Management
Certificate type
Sash window renovation (timber) Performance Upgrade. Draught-proofing and heritage double glazing.
Sash windows, timber windows
Industry-leading wooden window repairs:
Preserving the unique heritage and charm of period timber windows really is a priority to us, and with the right care and attention, original timber window frames can provide a lifetime of enjoyment. So, where possible, we will always suggest renovation over replacement via our tried and tested Ventrolla Perimeter Sealing System (VPSSS), while expertly repairing and replacing rotten sections with ease and finesse.
So, if your project has original timber windows that are draughty, rattling, or inefficient, we're sure our industry-leading window renovation services can help bring your timber windows back to life. After all, there’s no denying that timeless timber window frames play a crucial role in defining the character of period building facades and their interiors – so why should you or your client’s property be any different?
Ventrolla offer a sash window renovation service that negates the need to fully replace existing timber sash windows. This process involved renovating the existing windows and then installing Ventrolla's unique Perimeter Sealing System (VPSS) to eliminate draughts, and improving efficiency, so that all the charm and original character of sash windows can be retained.
Traditionally, a sash window requires a 3 mm gap around the sashes for functionality. Inevitably, this gap allows in draughts, dust and noise and is the source of annoying rattles. The installation into each window of the patented Ventrolla Perimeter Sealing System (VPSS) seals this gap and actually improves on the original by:
All work is done from inside the building meaning so scaffolding is not always required – speak to our team to find out more. Windows are always left secure and weatherproof overnight.
Renovation and performance upgrade service:
Perimeter sealing system performance:
Ventrolla Wood Repair:
Ventrolla wood repairs are undertaken using Ventrolla VR90, formulated to give long-lasting wood repairs beyond those normally carried out using conventional polyester wood fillers. VR90 is a patented two-part resin system and is designed to be used to impart the original strength to sash tenon joints, fill large cavities in sills and act as a powerful adhesive. It completely bonds with the parent wood and flexes when the wood contracts or expands. To achieve this bond, all decayed wood is removed exposing only sound wood. This is then stabilised using VR90 WS solution which penetrates the wood fibres to attain the permanent anchorage for the subsequently applied VR90 filler.
Seal Shuts:
Windows can be sealed shut internally and externally with the Ventrolla Sealing and Pointing system VS10.
Color | Beige Black Blue Bronze Brown |
Finish | Brass Bronze Brushed Chrome Copper |
Material | Timber |
Shape | Circle Crescent Diamond Elliptical Hexagon |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Five year |
Uniclass | |
CAWS | L10/10 Wood windows L10/210 Wood windows |
Third-party certification | British Board of Agrément (test report number 2756). |
Product performance | |
Weather performance | |
Air permeability | To BS EN 12207, Class 3 and BS 6375: 1-2009 (600 Pa) to withstand 71 mph winds. |
Resistance to wind load | Draught strips tested to BS 7386. |
Environmental | |
Acoustic performance rating | Independently tested and proven to fall within the 6–10 dB noise reduction range.Guidance for specification option: Performance verified by Hanns Tucker Acoustic Engineers. |
Frame | |
Wood species | Sapele and Accoya. |
Finish as delivered | Exposed bare wood is painted with white acrylic primer to BS 5082. |
Operation | |
Type | Manual. |
Sash removal system | Not required. Required. Guidance for specification option: The Sash Removal System is a unique hidden system which allows the quick and easy removal of both top and bottom sashes internally. Staff beads can easily be detached from the window giving access to the bottom sash. Using the plastic cord holder, the sash cord can be unclipped from the window which allows the bottom sash to be completely removed. The parting beads can also be removed, allowing access to the top sash. The Ventrolla sash removal system allows all components of the window to be removed internally and brought into the building for convenient maintenance and painting, thereby avoiding the need for external scaffolding. |
Sill replacement and lower box assembly | Not required. Required. Guidance for specification option: Replacement sills can be provided to match original profiles. The original bottom section of the box linings is removed and Sill trenches are cut, the outer and inner linings are spliced to facilitate a flush and water tight finish. |
Ironmongery | Not required. Replace existing. Guidance for specification option: A wide range of specialist locks and catches are available. |
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | United Kingdom |
Material | Timber |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 0.5 kg CO₂ eq/kg Self declared |
Recyclability | Yes |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
QA Certificate
Ventrolla on FENSA
British Woodworking Federation
BWF Certificate of Membership
CHAS
CHAS Certificate of Accreditation
ISO 14001 Environmental Management Systems
ISO 14001:2015 Environmental Management Systems
ISO 45001 Health and Safety Management
OCCUPATIONAL HEALTH & SAFETY MANAGEMENT SYSTEM - ISO 4500
ISO 9001 Quality Management
QUALITY MANAGEMENT SYSTEM - ISO 9001:2015
Ventrolla Brochure | Sash Window Renovation
Ventrolla Technical Specification | VPSS & VR90
Ventrolla Brochure | Window Hardware
Ventrolla Heritage Double Gazed Units Specification
Ventrolla Maintenance Specification | Casement Windows & VPSS
Ventrolla Technical Specification | Sash Window Horn Details
Ventrolla Technical Specification | Sash Window Maintenance Instructions | SRS
Ventrolla Technical Specification | Sash Window Maintenance Instructions | without SRS