About Topseal

Topseal offer a range of advanced GRP fibreglass roofing systems fitted through a national network of highly trained and approved installers.

Since our flat roof system was introduced back in 1992 it has been installed on millions of square metres of roofs all over the UK.

Topseal is the ultimate fibreglass flat roofing system suitable for both domestic and commercial works.

We continue to innovate and have recently launched a ground breaking direct lay flat roof system. This liquid applied flat roofing system has secured BBA certification and is suitable for refurbishments and new builds.

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Design Your Roof

With a wide range of colours and finishes to choose from Topseal can produce a completely bespoke roof, just the way you want it. Click below to design your perfect Topseal fibreglass flat roof.

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Simulated Lead

Topseal fibreglass is used extensively as a lead/copper replacement or alternative for roofs, gutter linings and complex architectural detail work.

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Installer Verification

Every Topseal installer is allocated a unique verification number to prevent 3rd party misrepresentation. You should always ask any Topseal installer for their verification number. Enter it below to confirm their identity.

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Latest News


  • Self Build & Renovation Show

    January 19 2017

    Topseal will be exhibiting at the Self build and Renovation Show at the National Self Build and Renovation Centre in Swindon this month.

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  • Latest press release

    January 12 2017

    ​Driffield School are the latest school to have the Topseal Direct Lay flat roofing system installed on some of their educational buildings, check out this case study.

    ...Continue reading

Guide to flat roofing

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