the permanent roof
it's easy and quick

E&OE      The text and graphics of this website are Copyright © 1996-2016 all rights reserved by Seamless Roofing Ltd.  Permadeck, Thermadeck & Flexiroof are registered trade marks.  The contents of this website are subject to review and are a guide only and do not represent a binding offer. The BBA logo is Copyright © British Board of Agrément.


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Seamless from end to end and side to side

Withstands frost and sun

Moulds easily around problem details and parapets

No silver paint or stones required

Tough enough for balconies or ladders or walking on

Has the highest fire rating (Ext FAA); many flat roof systems are highly inflammable.

4 standard colours, 80 special colours

Adds more than its cost to the value of your property

Laid by our own professional staff

Hassle-free installation

Tested, approved and certified to work and last

10, 20 or 30 year transferable guarantees

Thousands of installations already protecting properties and owners

Permadeck transforms the appearance of tired old roofs

Insulated Permadeck  = THERMADECK®

How Permadeck beats the economy’s problems
Welcome to the Seamless Roofing Permadeck® Web Site
We have been installing the finest seamless roofs for over thirty years.  Our flagship system, Permadeck 20, has been so successful we are proud to describe it as being truly 'once only' - no other flat roof system comes close for performance and durability.  
Based near Chester, we serve one of the wettest areas of Europe!
On a cost per year basis Permadeck 20 fibreglass seamless grp roofing is supreme.
For repairing old roofs or building a new one, Permadeck has proven to be the best solution.
 The ultimate roof for both REFURBISHMENT and NEW - inc BALCONIES
In 1993 Permadeck 20 achieved full British Board of Agrément Certification and it has been refined and developed continuously ever since, making it the most advanced fibreglass GRP roofing system available.
Countless thousands of our roofs are proof of how durable this system is.
Here are some of the benefits you will enjoy with Permadeck:
Most of our business comes from recommendations by other satisfied owners, here's what some of our customers have said:
"...the work was carried out in a professional and efficient manner..."   A G
"Needless to say, we would highly recommend you". G G
"Delighted, your team did an excellent job, thank you for your expertise; I will not hesitate to recommend your firm".  M J A

As an independent family-based company, we are free to market ANY ROOF SYSTEM.

If one of our competitors claims some other system is better or that our claims about PERMADECK are not justified in some way, please let us know, it could save you from an expensive mistake. Click ‘Compare Permadeck’ on the menu above.

Want Permadeck to REFURBISH an existing roof?

Technical info for


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Video Permadeck

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Permadeck UK
Permadeck20 waterproofing system is suitable for
 flat roofs, sloping roofs and balconies.  It has been
independently approved and tested since 1992.
         20 year guarantee