Double Glazed Sash Windows

Box sash London Joinery  have been involved in designing, manufacturing and installing double glazed windows and timber doors for over 30 years. With our experience in the timber joinery business, you can rest assured that we have set the highest standards in the manufacture of traditional timber doors and double glazed windows.

Whether you need repairs or replacement, we can completely enhance your Box Sash Window with double glazing, while remaining consistent with the original style and details.

We are renowned for our high quality, traditional, heritage, Victorian and historical joinery work. We specialise in double glazed box sash windows made to match the original style and profile.

If you are looking for specialists in detailed timber joinery products and standard joinery windows, doors and timber components, as well as the modern we are here to help.