Home > Companies > Sika Liquid Plastics > Decostik® Roofing Adhesive

A two pack, solvent-free polyurethane adhesive used in the construction of a cold applied built-up roofing system. It is typically used to bond Liquid Plastics Vapour Control Layer, Decotherm® insulation board and Liquid Plastics Carrier Membrane.

Decostik® will provide a suitable bond to the following substrates:

  • Plywood, timber and other timber based boards.
  • Concrete.
  • Galvanized steel.
  • Aluminium.
  • Asphalt.
  • Decotherm® Insulation.
  • Cork insulation board.
  • Bitumen based felt membranes (inc. SBS modified felt).
  • PVC.
  • EVA.
  • EPDM.
  • FPO.
  • TPO.
  • Solar reflective paint – subject to an adhesion test.

Standard product features




Coverage will vary depending on surface being treated and method of bonding 0.5 L to 1 L/m² is normal.

Curing Times:

The product should be allowed to cure for a minimum of two hours. Cure time will be lengthened in conditions of either low temperature and/or low relative humidity.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-50-00/355 Polyurethane adhesives
45-35-50/335 Cold applied polymer modified bitumen waterproof coatings

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Sika Liquid Plastics


+44 (0)1772 259781

Product reference

Decostik® Roofing Adhesive

Manufacturer details

Sika House,
Miller Street,
Lancashire, PR1 1EA
Tel +44 (0)1772 259781
Fax +44 (0)1772 255670
NBS Plus