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EPDM Roofing

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There are many benefits to using DuoPly flat roofing systems. As roofing contractors all do various types of flat roofing work ranging from property type, to roof size, to flat roof location, to difficulty and value. One set of flat roofing product benefits won't suit us all but with the overwhelming range of advantages of using DuoPly roofing systems there are advantages for all.

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  • Improved tear resistance,180% greater than comparable non-fleece membranes
    The exceptional physical properties of the EPDM roofing membrane are enhanced by a strong, polyester lining laminated to the underside of the EPDM waterproofing layer.
  • Provides 40% greater puncture resistance than comparable non-fleece membranes and greater than modified bitumen roofing materials
    The polyester lining creates greater puncture resistance than modified bitumen (ASTM D5635-94 resistance to dynamic puncturing of the roofing membrane).
  • Less material to load onto the roof
    Lightweight rolls of 35kg, with 18.54m² of membrane and the finished roof construction weighs 75% less than Modified-Bitumen flat roofing systems. That's 75% less weight to carry and 75% less time spent loading materials.
  • Pre-applied Seam Tape (PST)
    Pre-applied Seam Tape (PST) is applied to the DuoPly EPDM membrane in a factory-controlled setting ensuring reliable and greater peel and shear strengths with no entrapped air bubbles.75mm PST provides quality, consistency and speed of installation with minimal labour and few components are required.
  • Solves Access problems
    Where rooftop access is limited and the use of large cranes to load the material is impractical or impossible but still offering the ease and convenience of single-ply roof systems. The small easy to handle rolls are easy to carry or fit into service lifts.
  • Increased Speed of Application
    Pre-applied Seam Tape (PST) improves seaming productivity by nearly 75% and addresses the roofing industry’s biggest challenge —the shortage of skilled labour. This means completing projects faster, improving the ability to get buildings “in the dry” in less time and minimising business disruption.
    Delivering 30% greater peel strength and 32% greater shear strength than traditionally applied seams.
  • System Accessories
    DuoPly flat roof systems come with a host of pressure-sensitive and pre-fabricated accessories that increase installation speed, saving contractors both time and money. These innovative accessories are easy to install and have a proven history in the roofing market.
  • Allows old roof repair without removal
    The polyester lining and adhesive combination allow for bonding to most existing flat roof surfaces. This must be clean, smooth, dry and free of sharp and/or loose objects before installation.
  • 34% fewer seams than Modified Bitumen and light weight with DuoPly 1.52m wide membrane
    The DuoPly EPDM membrane rolls are 1.52m x 12.2m (18.54m²) and 35kg, meaning the materials can be securely loaded into vans or trucks and easily carried in elevators, up stairs, up access equipment or along scaffold. Allowing materials to be safely loaded to roof height.
  • Weather, sunlight and heat resistant
    Unlike most traditional flat roofing waterproofing membranes, DuoPly EPDM is completely resistant to temperature variations, weather and UV radiation. There is no need to protect the waterproofing membrane from sunlight either during construction or after!
  • Adheres to almost all substrates
    DuoPly Deck Adhesive is a unique, semi-pressure-sensitive water-based bonding adhesive offering superior peel strengths compared to other water-based adhesives, low VOC levels and low odours due to its water-based nature.
  • Suitable for normal maintenance foot traffic
    In case of regular roof traffic, the membrane must be protected with pavers, decking or walkway pads.
  • No need for use of a burner or other open flames
    The DuoPly roofing system is entirely cold applied so there are no fire or liability concerns as with torch applied systems.
  • Superior wind uplift resistance due to adhesive/fleece bond
    The polyester lined flat roofing system utilizes acrylic adhesive technology —a semi-pressure-sensitive adhesive to adhere DuoPly to the substrate. DuoPly membrane is laid into the wet adhesive that has been roller-applied to the substrate. Adjoining sheets are spliced together using Pre-applied Seam Tape (PST). A fast easy system to fit that is watertight from the moment it is installed.
  • Unparalleled, durable solution for any flat roof application.
    With over 21 million sq. m of polyester fleece reinforced membrane (225 million square feet) manufactured.
  • Low odour and noise –great for re-roofing occupied buildings
    Does not contain volatile organic compounds
  • Ideal for repair, renewal or new build
    An ideal alternative to commonly used asphalt-based flat roofing products
  • Low set up costs
    Besides the hand roller, only the basic tools are required: scissors, measure, solvent resistant paint roller, solvent resistant brushes, so no extra costs of heat guns and mechanical fixing equipment is incurred.


Want to know more about DuoPly? Contact us today...

Registered in England and Wales, Company Number: 03984573

Registered Office: Flex-R Ltd, Sandswood House, Hillbottom Road, Sands Industrial Estate, High Wycombe, Buckinghamshire, HP12 4HJ

Telephone: 0800 037 1240   Email: enq@duoply.co.uk