Ethylene Propylene Diene Monomer, or EPDM, is a synthetic rubber that is extremely durable and used across a variety of applications. EPDM is heat and weather resistant with its two main ingredients derived from natural gas and oil, making it an ideal roofing material.

It will not tear, split or crack with age, it repels all moisture, rain and snow. EPDM can stretch with up to 300% elongation, which easily accommodates any building movements or temperature fluctuations.

All of our EPDM membranes come with a 20 year product guarantee.

At G W Keir Roofing we are trained, certified and approved installers of 3 different types of EPDM Rubber Membranes:


ClassicBond EPDM

  • Choice of 1.2mm thick or premium 1.5mm thick membrane
  • Maintenance free waterproof membrane
  • Does not crack, split or rot
  • UV stable
  • Does not support moss or algae growth
  • Environmentally friendly
  • Safe to install – the system is laid with cold applied adhesives – no heat
  • One piece sheet equals no joints… no leaks
  • 20 Year membrane guarantee


Duoply EPDM

  • DuoPly™ EPDM membrane is comprised of a EPDM laminated to polyester reinforcement layer.
  • Improved tear resistance, 180% greater than comparable non-fleece reinforced flat roof membranes.
  • Provides 40% greater puncture resistance than comparable non-fleece reinforced roofing membranes
  • Allows old flat roof repair without removal
  • Fast and reliable installation and no open flames on the roof.
  • External fleece reinforcement creates a very thick 2.54mm sheet
  • Ideal for repair, renewal or new build
  • 20 Year membrane guarantee


Resitrix EPDM

  • All-purpose, extremely durable single-ply waterproofing membrane
  • Heat welded reinforced membrane – No flames
  • Unaffected by UV and weathering and withstands all naturally occuring temperature variations
  • Reinforced and highly resistant to puncture and is guaranteed never to shrink
  • 50 Year Life Expectancy
  • Does not Rot, Blister or Crack
  • 2.5mm Thick
  • 100% non-toxic
  • Fibre Reinforced
  • Self Adhesive
  • BBA Certified
  • 20 Year membrane guarantee

To discuss your roofing needs or to arrange a free no obligation visit and quotation please get in touch…