Secondary Glazing

Secondary glazing can be a great way to improve the energy efficiency and noise reduction of a primary window and it can also reduce dirt ingress,

We manufacture & install special hardwood secondary glazing that is very slim & discreet. We offer this with a fully hand painted or sprayed finish.

To maximise the improvements, we would always recommend having the primary windows & doors upgraded first if possible.

© 2018 London Sash Windows & Doors Ltd. All rights reserved. 

London Sash Windows & Doors Ltd,: registered as a limited company in England and Wales under company number: 10832389

London Sash Windows & Doors Ltd,

​3 Wedmore Street,


N19 4RU

T : 0208 150 7153


Monday to Friday: 

8:30am to 5:00pm.

Saturday: By appointment only.

Sunday: Closed.