Our bespoke timber casement windows combine traditional craftsmanship with modern performance, creating elegant, energy-efficient windows for both period and contemporary homes. Every window is handcrafted to enhance your property's character, security and long-term durability.
Alongside our traditional sash windows, SashWise manufactures and installs bespoke timber casement windows for period, heritage and character properties, including Victorian, Edwardian and Georgian homes.
Whether you are replacing ageing single glazed casement windows, reinstating timber windows where the originals have previously been removed, or looking to improve the thermal performance of your home, we can create double glazed timber casement windows to suit the existing architecture.
Our casement windows are manufactured in Accoya and can be produced in a range of configurations, profiles and glazing styles. Careful attention is given to proportions, moulding details and existing features so that new windows complement the character of the property rather than looking like a modern addition.
Flush Casement Windows - the opening casement sash sits flush within the outer frame when closed, creating a clean, traditional appearance. This style is particularly well suited to many period and heritage properties where maintaining original proportions and detailing is important.
Stormproof Casement Windows - the opening sash sits slightly proud of the frame and incorporates an overlapping lip when closed. This provides a more contemporary appearance and can suit properties where this style of casement is already present.
During the survey we can assess the existing windows and property style to help determine the most appropriate design.
Our bespoke double glazed timber casement windows combine traditional appearance with modern performance:
High-performance double glazing helps reduce heat loss and improve comfort within the home.
Integrated seals help reduce draughts and can improve protection from external noise.
Accoya provides excellent durability and dimensional stability, making it particularly well suited to external window joinery.
A workshop-applied breathable paint finish helps protect the timber and provides a high-qualit
A wide choice of window furniture and locking options allows security and ease of operation to be considered alongside appearance.
Every project begins with a detailed survey of the existing casement windows and surrounding property. When we are replicating original windows, we record the style, proportions, configuration and moulding details so the new joinery can be designed to complement the architecture as closely as possible.
The new Accoya casement windows are then manufactured in our dedicated workshop to the agreed design and glazing specification.
On site, the existing windows are carefully removed and the opening prepared. The new timber frame is installed with integrated draught-proof seals before the double glazed casement sashes are hung and adjusted for smooth operation.
New internal architrave and window boards are fitted where required, followed by the chosen ironmongery, window furniture and locks. Our range includes both period and contemporary styles and finishes, allowing the final details to coordinate with the property.
After final checks, the installation is registered with FENSA where applicable, providing confirmation that the replacement windows comply with current Building Regulations.
New Hardwood Sash Window Boxes
We can supply and fit new hardwood sash boxes complete with double glazed sash windows that replicate the originals.
New Hardwood Sash BoxesNew Hardwood Double Glazed Sashes
We make new double glazed hardwood timber sashes to fit within your original sash window box frames.
New Hardwood Double GlazingFull Sash Window Restoration
We completely and sympathetically restore your windows, so they will look like new without losing any of their original features.
Full Sash Window RestorationPlease call us on 0208 977 4627 or complete the form below.
Please complete the form to discuss your sash window requirements or for further information about our services.
Address:
Unit 39, Railway Arches
Popes Grove
Twickenham TW1 4JW
Tel: 0208 977 4627
