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About Us

Synseal Group is the UK’s leading supplier of high-quality products to the fenestration industry, known for market-leading products including WarmCore, Masterdor and Global.

Founded in 1980, we have come a long way from the PVC-U extrusion company we started as, now offering one of the widest product ranges available across our seven UK manufacturing sites.

We continually invest in and enhance our extensive product range to deliver the most innovative, efficient and competitively priced products which add value to our customers’ businesses.

We want to be the first choice for our customers across our core product ranges, helping them to grow their businesses with first-class products that make a real difference.

Latest News

Read the latest news from across the Synseal Group including recent product launches, new appointments and company acquisitions.

Careers at Synseal

If you’re looking for a fast-paced, dynamic working environment then get in touch to find out more.

Terms & Conditions

Please read our Terms & Conditions to fully understand your rights as our customer.

Environmental Statement

Synseal Group is ISO14001 ensuring all company environmental management systems exceed government mandate.


Synseal Group products are all independently tested and accredited by the British Standards Institute (BSI) and the British Board of Agrément (BBA).

Privacy Policy

Synseal Group is committed to protecting your privacy.

Modern Day Slavery Act 2015

Synseal Group is committed to preventing slavery and human trafficking