Family run business

Great customer service

UK manufactured

High quality bespoke windows

Flush Sash Windows

Like the name suggests, these windows offer a smooth, flush fitting appearance when closed, with no lip between the outer frame and the sash. The result is a modern, streamlined look when finished in Grey that’s growing in popularity, especially in more modern home designs. For a more traditional timber look choose a woodgrain finish to perfectly complement the aesthetics of your property.

Our Flush Sash Windows are from our successful Logik S range, so you can expect superb heat and noise insulation, security and strength as standard.

Logik S Flush Sash frames are available in a wide range of woodgrain colour finishes. In fact, they’re so realistic, it’s hard to tell from the kerbside that they’re not actual wood frames.

For the consistent look even with the window open

What’s really special, though, is our grey substrate option. Unlike most coloured frames, which have a foil coating on top of white PVC-U, our grey substrate frames are the same colour all the way through. So even with the window open, there’s no trace of white. A great way to get the all-grey aluminium look that’s getting more and more popular nowadays, without paying the premium price of aluminium itself.

Our Partners

Window & Door Specialists For The Trade

As a trusted, reputable FENSA Registered Business, Tri-tec Windows offers low-maintenance, high-performance windows, doors and conservatories for homes throughout Essex, underpinned by 10-year insurance backed guarantees for genuine peace of mind.


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