Window and door installation header


We believe that the quality of the installation process is just as important as the quality of the doors and windows.

All our installersWhich? Trusted Trader are expert craftsmen, with extensive experience draught proofing and installing our timber windows and doors. We offer an installation service for properties located across London and Southern England.

Meeting your exacting standards

We recognise that the craftsmen who install the windows and doors should be courteous, trustworthy, flexible enough to work around your needs and lifestyle, self-sufficient and able to meet your exacting standards.

Our installers will always treat your home with the utmost care and respect, seeking to minimise disruption, and keeping the work area clean, tidy, and safe.

If you are having our replacement windows or doors installed, we will remove the old windows and doors and safely bring them back to our workshop for safe disposal. Our installers will also aim to clean up the immediate work area at the end of each day to a good standard.

new sashes installation
Repairing timber sash windows

Our Installation Team

We have approximately 15 employees within our installation team. We occasionally use trusted subcontractors for installations, but they always work to our strict standards under the supervision of our installations management team.

Depending on your requirements, we can either provide replacement windows and doors or a draught proofing repair service.

For locations in Great Britain outside of London and Southern England, we offer a supply only service for new joinery.


Below is a video of one of our installers fitting new sliding sashes into existing window frames.