SKU: 6193-BB122012
Bitumen Board fills expansion joints between concrete slabs and structures, giving the concrete room to move without cracking. Without a joint filler, adjacent slabs crack as they expand and contract with temperature, and an open joint fills with sand and grit that jams it solid and stops it working. This board is a dense fibreboard impregnated with bitumen at 35%, so it compresses under pressure without extruding out of the joint, and the bitumen seals out the debris that would otherwise choke it. Each sheet covers 2250mm x 1180mm at 12mm thick. It cuts to size with a utility knife or handsaw, and fixes to the edge of the concrete with nails or construction adhesive before the adjoining pour. Concrete contractors use it in slabs, roadways, footpaths, ramps, runways and retaining walls wherever a movement joint needs filling.
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Bitumen Board fills expansion joints between concrete slabs and structures, giving the concrete room to move without cracking. Without a joint filler, adjacent slabs crack as they expand and contract with temperature, and an open joint fills with sand and grit that jams it solid and stops it working. This board is a dense fibreboard impregnated with bitumen at 35%, so it compresses under pressure without extruding out of the joint, and the bitumen seals out the debris that would otherwise choke it. Each sheet covers 2250mm x 1180mm at 12mm thick. It cuts to size with a utility knife or handsaw, and fixes to the edge of the concrete with nails or construction adhesive before the adjoining pour. Concrete contractors use it in slabs, roadways, footpaths, ramps, runways and retaining walls wherever a movement joint needs filling.
| Specification | Details |
|---|---|
| Length | 2250 mm |
| Width | 1180 mm |
| Thickness | 12 mm |
| Bitumen Content | 35 |
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About Bitumen Board
Each sheet covers 2250mm x 1180mm at 12mm thick.
It refers to the bitumen content the fibreboard is impregnated with, which gives the board its self-sealing, compressible properties.
Cut the board to size with a utility knife or handsaw, position it flush with the edge of the concrete structure, and fix it in place with concrete nails or a general-purpose construction adhesive before the adjoining concrete is poured.
No, it's designed to compress and recover under pressure rather than extrude out of the joint, which is standard behaviour for this category of bitumen-impregnated fibreboard.
Yes, the bitumen impregnation gives it a self-sealing property that blocks out sand, grit and plant growth that would otherwise stop the joint compressing and expanding properly.
Yes. CellFlex is a trade name commonly used for this category of bitumen-impregnated fibreboard expansion joint filler.
No, the bitumen content makes it resistant to rot and deterioration, even in below-ground or outdoor applications.
Bitumen Board
We suggest following the steps above for the best installation results. If you have any questions or need assistance, our team is here to help.