Guaranteed Asphalt Ltd.


  • Barney Worrall, Director
  • Number of Employees: 21 - 100

Guaranteed Asphalt was formed in 1964 as a Mastic Asphalt Manufacturing & Contracting Company based in Corby Northamptonshire, we soon added additional services with our Roofing Division based at Mercury way South London which is now our Regional Head Office incorporating the two divisions with Corby remaining our Manufacturing Plant and distribution centre which is ideally situated in middle England.


We manufacture all grades of British Standards Mastic Asphalt and have our own Polymer Modified Mastic Asphalt System, BBA Certified. We offer an extensive range of services for a wide variety of applications throughout the construction industry:-
  • Asphalt Roofing
  • Car Park Waterproofing
  • Paving
  • Asphalt Flooring
  • Asphalt Tanking
  • Bridge Deck Waterproofing
  • Lead/Copper/Zinc/Aluminum/Slate/Single Ply/Felt/Shingle Roofing
  • Refurbishment
  • Waterproofing
  • Screeding
  • Joint Sealing
  • Comprehensive and Expert Design for Specialist Applications
  • Forth Road Bridge - Deck Resurfacing
  • Storebaelt Bridge Denmark - Waterproofing Works
  • Royal College of Music - Slate & Lead Work
  • Queens Club - Tiles & Lead Work
  • Hewetts Quay - Slate, Lead, Polymer Asphalt
  • St Paul’s Cathedral – Lead & Copper Work
  • MSCP Jersey - Multi Storey Car Park Polymer Asphalt & Design

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