POLYBIT Polyboard

Bitumen impregnated compressible fibre filler board

  • Excellent recovery after 50% compression
  • Good thermal insulation properties
  • Multi-purpose bituminized softboard made from natural
    wood fibres for roof, wall and floor in concrete and
    timber constructions

Features and benefits

Polyboard is a compressible bitumen impregnated fibre board for expansion joints.

Properties

Description

POLYBIT® POLYBOARD is a compressible bitumen impregnated fibre board for expansion joints. The impregnated softboard is made from natural wood fibres chips and proprietary materials, mechanically reduced to fibres which are then pressed to form a continuous sheet. Bitumen is incorporated into the board during manufacture to improve its moisture resistance and durability. Available size: 12mm, 19mm & 25mm.

Documents and downloads

How to use

INSTALLATION PROCEDURE

When used to form movement joints in in-situ concrete, Polyboard can be positioned next to the shuttering before casting or can be bonded to the adjacent concrete with an appropriate adhesive. The softboard must be protected on external faces by a compatible weather resistant sealant. Polyboard up to a thickness of 19mm can be cut using a stable knife and a guide bar for a straight edge after cutting. To avoid tearing in the reverse face, the cut should be made onto a flat rigid backing material. Boards thicker than 19mm should be cut with a portable electric circular saw

Protection

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

Storage

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. Keep away from sharp edges and protect the edges from getting damaged. During installation carry single boards vertically. 

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Frequently asked questions

It is made using natural wood fibres

No. Backing rod must be used

Yes. This can be used