
Full sash window replacement
We can provide a complete replacement sash window service. If we feel a sash window is beyond the state of repair (our last option!) but if the situation does occur this is always available for both double of single glazed options to remain “in keeping” with the property.

Double Glazing Upgrading
We offer a unique service where a lot of people would love to upgrade their windows to double glazing but cannot for conservation reasons, We have a system where you keep your original frames and we insert new sashes in them keeping the section sizes the same with double glazing installed. It’s a way to keep your original aesthetics and benefit from double glazing and draught proofing. We call this a “retro fit”. we usually recommend a reasonably priced hardwood sash to replace the common softwood sash as with experience we find softwood sashes deteriorate rapidly compared to hardwood.

Draught proofing sash windows
Draught proofing your sash windows is a great way to stop the common “whistling window” when its rattling in the wind and letting cold air into your property. We don’t use the reasoning that your initial investment would be returned in saving on your heating bills as the numbers just simply don’t add up! However, if you want a warm cosy home with reduced bills then this is a great option to think about. We can guarantee draft proofing sash and casement windows and doors up to 95% from its original state so it really is worth while.
At LDN sash window co, The founder of the company has been in the joinery business a long time, he knows the pros and cons of all things wood! For this reason we made the decision not to use softwood on any of our external projects. We want our work to look great, be an asset to your home, and more importantly to last the length of time! We know this cannot be achieved using run of the mill pine externally. We’ve a wide range of hardwoods to choose from which we use to suit your individual properties needs to bring out the very best in the job at hand.

We cover most of London and fit sash windows in South West London often.


