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Permaphalt Warm Roof System

Polymer modified mastic asphalt warm roof system with PIR Insulation.

Suitable for application over:

  • Concrete
  • Plywood
  • Metal
  • Existing built up roofing.

Permaphalt is manufactured in the UK.

BBA Certified No. 89/2299

Warranty available up to 20 years.

BROOF(T4) fire tested: contact our technical team for more information.

Contact our technical team for specification.

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Roof Type

Warm Roof

Waterproofing Type

Hot Applied

Insulation Type


Deck  Type

Existing Built Up Roofing


Case Studies

7 September 2021

Private House, Chichester

Sustainability and blending in with the natural environment were the criteria for the re-design and extension of this home near Chichester, West…

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21 December 2020

Spencer Courtyard, Finchley, London

Sustainability and creating a lush, haven of greenery were key considerations for award-winning architects and designers kennedytwaddle when turning a derelict eyesore…

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14 December 2020

Imperial Court

Situated on the trendy Streatham high street Imperial Court has been designed to meet the growing need for well designed but affordable…

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Knowledge Hub

15 April 2024

AccuRoof®: The new name for SIG Design and Technology

Trading Director Robert Edwards explains why SIG Design & Technology is rebranding to AccuRoof®, and what this means for its specifier-led customer…

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15 February 2024

The GRO Green Roof Code – a Green Roof Guide to Best Practice

The 2021 anniversary edition of the GRO Green Roof Code includes guidance on blue roofs, biosolar roofs and biodiversity net gain.

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1 February 2024

Lucent W1: How the complex roof was built

Behind the iconic Lights of London’s Piccadilly Circus a new mixed use development features one of the most complex roofs ever to…

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