At GAP, we are dedicated to offering a wide range of products so installers and homeowners can pick up everything they need with a single visit to one of our 40+ nationwide depots or our online store.

Whether it’s a liquid roofing solution such as Desmopol, Firestone rubber cover or Tapco mock slate that you’re after, GAP will have everything you need to complete a roofing job to the highest standard.


Desmopol is a highly elastomeric waterproofing liquid membrane which can be used for a range of jobs including balconies, walkways and car parks. With only 1 layer required and resistant to rain in just 30 minutes, Desmopol is a quick and easy liquid roof solution which also protects against corrosion, rust and general wear.

 Desmopol Image

Benefits of Desmopol:

  • Quick and easy to apply with no reinforcement required
  • Resistant to temperatures ranging from -40°C to 80°C
  • No unsightly seams or overlaps
  • Suitable for application on Plywood, Bitumen Membrane, Concrete and Asphalt.
  • Can be applied with a zero pitch
  • High abrasion and elasticity
  • ETA Certified for 25 years & CE Marked


Tapco Slate

Tapco Slate is becoming increasingly popular throughout the UK, mainly thanks to its strong likeness to traditional slate and durability. Manufactured from a limestone and virgin resin, Tapco Slates will not break as traditional slates would. It also comes with pre-marked fixing points for an easy and stress free installation.

 Tapco Slate Image

Benefits of Tapco Slate:

  • Looks extremely authentic
  • Choice of 4 colours; Pewter Grey, Chestnut Brown, Brick Red and Plum.
  • Features a slight curved profile to create a tight fit when nailed in place
  • UV Stable and through coloured to avoid discolouration
  • Suitable for vertical cladding
  • 40 year manufacturers guarantee


Firestone Rubber Cover

Easy to install, Firestone Rubber Cover is specifically designed for residential flat roofs resulting in a watertight and extremely durable roofing solution – making felt roofing a thing of the past.  The high performing rubber synthetic rubber membrane can elongate over 300% allowing for building movements and changes in temperature.

 Firestone Rubber Cover Image

Benefits of Firestone Rubber Cover:

  • Fire resistant, making it cheaper for insurance purposes
  • Environmentally friendly
  • 45 year life span
  • Easy to install –  1 sheet is often large enough for most roofs, meaning no need for joints in the material  
  • No protective top layer required
  • 10 year manufacturer warranty


All our roofing products are available to order throughout our 40+ local GAP depots or online at low trade prices.

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