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What Adhesive do I use when Bonding ClassicBond Pro EPDM?

ClassicBond Pro EPDM can be bonded with several adhesives, Waterbased, Solvent Based & PU Adhesives making it a very versatile roofing system

Full Answer

ClassicBond Pro EPDM membrane is incredibly versaile and can be bonded to almost all existing flat roof materials including bitumen based products such as torch on felt, asphalt and liquid mastics. DuoPly™ EPDM roofing membrane is a polyester reinforced elastomeric flat roofing membrane which consists of an EPDM laminated to a polyester reinforcement layer.

  • Timber
  • Tissue Faced Insulation
  • Glas Fibre
  • Felt
  • Asphalt
  • and Many More


The fleece reinforcement offers protection from the oils in bitumous products that would normally damage EPDM rubber and improves puncture resistance meaning that flat roofs can be repaired without removing the existing roof. That said roofs which have suffered water damage and show signs of rot must be removed and replaced with new materials.

ClassicBond Pro EPDM has a greater range of adhesives that can be used to bond the membrane in place. This article will give the advantages of each

  • Water-based Deck Adhesives
  • Contact Bonding Adhesive
  • PU Moisture Curing Adhesive
  • Contact Spray Adhesive



ClassicBond Water-Based Adhesive

ClassicBond  Water Based Acrylic (WBA) Decking Adhesive is a unique semi pressure sensitive water based adhesive for bonding ClassicBond Pro EPDM membranes to a variety of flat roof substrates, offering superior peel strengths without solvents or strong odours. It is ready for use and non flammable. This is the most commonly used adhesive for flat roof areas

Contact Bonding Adhesive

Bonding Adhesive is a high quality, high tack, one-part neoprene bonding adhesive formulated for brush or roller application. Primarily used for bonding of DuoPly™ EPDM membrane at angle changes and verticles but can also be used for bonding DuoPly membrane to the deck surface of non absorbant surfaces. 

ClassicBond Pro Polyurethane Adhesive

ClassicBond Pro Polyurethane (PU) Adhesive is a one component, moisture curing, high performance adhesive used to bond ClassicBond Pro EPDM polyester lined membranes to a range of substrates plywood, OSB, concrete, PIR/PUR tissue faced insulation, steel, existing bitumen layer etc. The adhesive is roller applied and cures by reacting with atmospheric conditions.

SPB Contact Spray Adhesive

An alternative to standard contact bonding adhesive for membrane attachment to upstands and detailing. SPB adhesive is a spray applied, high-strength adhesive, formulated especially for gun application and bonding DuoPlyFleece reinforced EPDM to a variety of substrates. The spray application dramatically reduced both drying time and installation time.