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Traditional Window Restoration

Tec Glass are specialist glaziers for traditional window restoration and, leaded lights. We offer independent advice that is based on over 20 years of experience and take great pride in offering high quality solutions that are tailored to individual needs.

Right: pictures of window restoration and replacement window projects

Welcome to our Company

What our Customers say

Traditional Restoration services

Tec Glass are a traditional window restoration and replacement window specialist.

Whilst we can supply or refurbish any type of window, our approach is always to listen and advise on the possibilities, rather than focus on a product. We are committed to providing an  excellent customer experience as well as a passion for restoring listed or traditional leaded windows or crittall and steel windows.

Below is an example of the transformation we can achieve:


`We cannot recommend Tec Glass highly enough - they made new leads for every single window using old glass in each one, resulting in a wonderful effect and bringing the house back to its original beauty’

Mrs Haftke, Kent.

Crittall/Steel Window Restoration

We can refurbish your crittall windows and glazing, removing and restoring the rusty frames or repairing and replacing the timber sub-frames. We have a generic restoration process that is detailed on this website - click here.

Often the restoration process involves an element of replication and we are able to copy or create bespoke furniture, backing plates or frames as needed.

Traditional Leaded Lights

We are experts in the manufacture or refurbishment of traditional lights and one of the largest in the UK. We both supply and install and have supported many and varied projects, from prestigious Grade I & II listed properties through to film sets & media.

Stained Glass restoration

We have a stained glass design & restoration capability that enables us to support important commercial and ecclesiastical refurbishment works.



Secondary Glazing

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All pictures featured on this website involve Tec Glass projects and require permission to use or copy


A really important complimentary product for single glazed installations is Secondary Glazing. Whether you want to cut down on noise or drastically improve insulation secondary glazing achieves both. It should also be relatively unobtrusive and complement your existing colour scheme.

The system Tec Glass supply and install is designed to fulfill the above benefits and more. Many customers who request window restoration also choose to install secondary glazing at the same time. See our dedicated website - click here.