Expandafoam is a flexible and compressible closed-cell polyethylene joint filler for movement joints in brickwork and blockwork, isolation joints and hinge joints. Also available in strip or cord form as backing to elastomeric sealants.

General information

Uniclass 2015

Pr_30_31_76_66 Polyurethane (PUR) expanding foam fillersPrimary


F30/610 Movement joints with sealant

F30/615 Movement joints without sealant

F30/76 Movement joints with sealant

F30/78 Fire-resisting movement joints without sealant

P12/385 Sealant backing material

Specification data - Polyurethane (PUR) expanding foam fillers

Product Reference


Standard product features


  • Recovery: > 70%.
  • Weathering test: No disintegration.


  • DTp Specification for Highway Works, December 1991, Series 1000, Clause 1015.
  • BS 5628, Part 3: Code of Practice for the Use of Masonry.


Technical data sheet catalogue

Technical data sheet catalogue

Fosroc Sealants Brochure 2011

Fosroc Sealants Brochure 2011