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Sash windows

Why choose SashWise?

Dan, the business owner and his team of highly skilled craftsmen, offer a comprehensive and cost-effective sash window service.

Dan oversees all the jobs and is committed to delivering the best quality work using only the finest materials yet maintaining a highly competitive price. Established in 2006, we have built up an excellent reputation in the local area. 

Front of a house with Sash Windows

We have a long-serving experienced team

All our team of skilled craftsmen’s have a combined experience of over 25 years. Our team are dedicated, reliable, and are committed to providing only the best quality service to our customers. We do not employ any sub-contractors. Find out more about our team here. 

We take extreme care in our clients’ homes

We are very diligent and conscientious when working in our client’s homes. We place clean dustsheets over your floors, furniture and stairs. We use vacuum-sanding machines that clean as they go. At the end of each day, dust sheets are removed, floors are vacuumed, and tools are neatly stored. Throughout the job, we will dispose of any old materials and rubbish. 

SashWise Vans
sash window repair

If we find rot, we deal with it! 

At SashWise we hate rot! Should we discover any rot to your windows while carrying out any of our services then we will never leave it. We will carry out any repairs as required to ensure that the rot issues are resolved entirely. 

We have a workshop in Twickenham

Our workshop in Twickenham allows us to offer a full restoration service whereby your original sash windows are stripped back to wood and painted inside and out. 

The sashes are removed and taken to our workshop in Twickenham, where we have a dedicated craftsman who restores your windows to their former glory.  

Our workshop also means less disruption for you and your home. We can carry out restoration process off-site and can restore the windows to a much higher quality. 

But don’t worry, we do not leave a hole in your windows while this work is carried out, we carefully board-up the window openings ensuring that they are secure and weatherproof. 

Sash window workshop
Georgian sash window renovation

We match your original windows 

When we replace your windows we go to great lengths to ensure that your new windows will match the originals, in terms of replicating section sizes, pane configuration, moulding and horn detail. 

Our double glazed units can be supplied with black, silver or white spacers.

We use the best draught-proofing system available

Our choice in draft-proofing system uses new wooden parting and staff beads with hidden draught-proof brushes. Unlike many of our competitors who use plastic parting beads; others use standard beadings and fit brushes to the edges of the sliding sashes themselves. 

These approaches may be cheaper in terms of materials, but far less effective as a draught-proof-seal. They are also more visually obtrusive and often resulting in improper window operation. Our system ensures smooth operation and hidden brushes.

sash window kingston
East Twickenham Double Glazed Sash Windows Project

We use the highest quality materials 

Our experience has allowed us to know what materials are the best to work with. From wood to paint finishes we have you covered.  

We use the best sash cord that is available, that has a traditional cream waxed cotton exterior around a solid polyester core. This cord is many times stronger and more durable than standard sash cords and so will last many years longer. 

All paints used are micro-porous, external grade and low Volatile Organic Compounds, meaning they are more environmentally friendly. For internal surfaces, we typically use an Eggshell paint from ‘The Little Green Paint Company’ which we have found to be the highest quality paint in both durability and finish. 

All our new windows are made from either Accoya or Sapele Hardwood. Both of which have excellent durability and fungal resistance and are supplied from sustainable sources. 

We charge 0% VAT on all draught proofing work

Under current government rules to reduce carbon emissions our draught-proofing service is free of VAT.

Young girl looking out of a sash window to snow outside.