FAQ About Runner Roofs
We understand that customers often have questions about rubber roofing, and our FAQ section is designed to provide clear, honest answers. Common topics include how long rubber (EPDM) roofs last, how they perform in extreme weather, and what maintenance is required to keep them in top condition.
We also cover questions around installation times, repair options, and how rubber roofing compares to traditional felt systems in terms of durability and cost. Whether you’re considering a new flat roof or looking to upgrade an existing one, our FAQs help you make an informed, confident decision.
What is EPDM
Firestone RubberCover EPDM is a 100% cured single-ply roofing membrane made of a synthetic rubber Ethylene-Propylene-Diene Terpolymer.
Since 1980, more than 1,000 million m² of Firestone EPDM membranes have been successfully installed on commercial, industrial and residential roofs worldwide.
How long will the EPDM membrane last
Firestone RubberCover EPDM membranes offer unmatched resistance to UV radiation, ozone, alkali rains and high or low temperatures.
Recent studies show that the membrane has a life expectancy up to more than 50 years, even when exposed to sunlight.
Which substrates are suitable
Compatible substrates are wood, PIR and PUR insulation, bitumen, concrete, masonry, aluminium, zinc and lead. Firestone RubberCover EPDM can overlay virtually any old roof provided the roof decking is sound .
Water based adhesive is used on timber substrates, contact adhesive is used on other surfaces.
Must the surface be cleaned before adhesion
The surface must be clean, smooth, dry and free of sharp and/or loose objects and/or foreign materials such as oil, grease, and/or other contaminants.
Therefore, it is recommended to sweep the substrate with a brush prior to the installation of the membrane.
Is maintenance required
No specific maintenance is required for a Firestone RubberCover EPDM roofing system. Firestone, however, recommends a yearly inspection of the roof.
What is the fire rating of the membrane
Standard membrane is AC fire rated. AA rating can be achieved if required by ballasting the roof area.
Can I walk on the membrane
EPDM is perfect for periodic maintenance foot traffic. It is not suitable for heavy duty foot traffic and should be protected with a paving or timber decking system.
Can the membrane be ballasted
Yes, it is possible to cover the membrane with gravel, pavers or timber decking but we strongly recommend that the membrane is fully adhered to the substrate.
Firestone recommends the use of a protective geotextile (polyester 300 g/m²) between the membrane and any ballast.
