Foam Expansion Joint is a 1/2″ flexible foam expansion joint filler composed of a unique synthetic foam of isomeric polymers in a very small, closed-cell structure. Gray in color, It is a lightweight, flexible, highly resilient material offering recovery qualities of over 99%. The compact, closed-cell structure will absorb almost no water. Flexible foam expansion joint filler provides an excellent joint filler and back-up material for use in either horizontal or vertical applications where expansion and contraction movements must be accommodated. It is lightweight and easy to cut or form in the field without waste and compresses easily for use with shrinkage-compensating concrete and it may be used to relieve stress and pressure in concrete pavements. It may be sealed with hot- or cold-applied sealants and is a user friendly, lightweight, flexible foam – forms or wraps around curved or circular surfaces. Cuts easily on the job with a razor knife – no breakage or waste.