Polyethylene joint filler


Polyboard PE is a non-extruding, non-absorbent, UV resistant, semi-rigid, highly resilient, bitumen free, closed cell polyethylene joint filler for expansion and movement joints in concrete, brickwork and block work.


  • Non-absorbent and non-tainting. Hence makes it suitable for use in water retaining structures.
  • Highly resilient – the heat welded laminated structure combines greater rigidity and load support, therefore low load transfer.
  • Bitumen-free and rot-proof. ideal for water retaining structures.
  • Good thermal insulation properties.
  • Easy to install.
  • Natural bond breaker

This TDS is applicable for the United Arab Emirates only. Please contact your local Polybit sales office for the available TDS in your region


Installation Procedure

Joint sealing slots: When forming expansion joints with Polyboard PE in in-situ concrete, joint sealing slots can be readily formed in the following manner:  Before installing, simply cut off the top strip as per the required joint depth, throughout the length. This top strip can be removed later for sealant application. pin the top strip back to Polyboard PE using two-inch nails at regular intervals. Then install the joint filler assembly - flush with the finished surface. Prior to sealing, the top strip can then be pulled easily from the joint to provide an uncontaminated sealing slot ready for preparation and sealing. therefore, sealant wastage is reduced. As elastomeric sealants will not bond to Polyboard PE, the additional need for bond breaker strips is eliminated.


Store the boards in a cool, dry and shaded area. The boards should be stacked on a pallet which should be placed on a flat area. As the boards are of thermoplastic material, they are easily combustible. Therefore, keep it away from sources of heat and protect from flame. Keep away from sharp edges and protect the edges from getting damaged. During installation carry single boards vertically.


Polyboard PE can be fixed to protect waterproof membrane with a suitable adhesive like Bitubond N or by suitable approved mechanical fixing methods.