Verified by manufacturer 8 days ago
Timber sash window restoration.
Restoration of existing timber windows in need of repair and upgrade.
Draught Proofing – Heritage-Friendly Comfort
At Sash Window Conservation, we combine traditional craftsmanship with modern materials to discreetly improve the performance of original windows and doors, without compromising their historic character.
Our hidden draught-proofing system reduces rattles and draughts, improves acoustic insulation, and ensures smoother window operation. As standard, we replace beading and cords/chains, and carry out sensitive timber repairs to retain the original fabric wherever possible.
We also offer glass upgrades – including laminated or double glazing – to enhance energy efficiency and noise reduction.
Benefits:
Color | White Black Brown Other Clear |
Finish | Painted |
Material | Timber Wood |
Shape | Rectangle Square Circle Oval |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Five year |
Uniclass | |
CAWS | L10/210 Wood windows L10/10 Wood windows |
Classification data | |
Third-party certification | FSC certified timber. |
Dimensions and configurations | As drawing. Manufacturer guidanceInsert requirements or refer to a drawing or schedule. |
Product performance | |
Weather performance | |
UK exposure category | To BS 6375-1, 2000 Pa. |
Air permeability | To BS EN 1026:2016, 600 Pa (Class 4). |
Watertightness | To BS EN 1027:2000, 250 Pa (Class 7A). |
Resistance to wind load | To BS EN 12211:2016, 2000 Pa (Class A5). |
Environmental | |
Acoustic performance rating | Manufacturer guidanceUp to 50% reduction in noise. |
Thermal | |
Whole window U-value | Manufacturer guidanceLevels of improvement subject to existing specification. |
Frame | |
Chain of custody | FSC. |
Glazing or infill | |
Requirements | Retain existing. Single glazed (laminated). Double glazed. |
Hardware | Retain existing. Replace cords/ chains. Manufacturer guidanceThe refurbishment includes the replacement of all cords/ chains unless requested to leave as original. |
Operation | |
Type | Manual. |
Frame colour/ finish | White. Black. Brown. Bespoke. |
Repair and restoration | Timber repair. |
Weatherpiles | Concealed draught proofing system. Manufacturer guidanceRefurbishment includes the replacement of all beading, unless requested to leave as original. |
Material | Timber Wood |