Bitufoam Sealant Foam

NZ$9.50

Prepacked 2000mm Bitufoam pack. 

Our Bitufoam sealant strips provides a long-lasting seal or compression joint between different surfaces including concrete slabs, the most common application is as a roofing seal. 

It can be used before roofing but given the flexibility of the product it can also be retro-fitted. Bitufoam is a polyurethane foam which is cut, profiled to the required shape, and then permeated with a bitumen solution/

Bitufoam contains no carbon black and is compatible with Zincalume and Colorsteel products. It is not toxic and made in New Zealand. 

Zincalume and Colorsteel Compatibility

Bitufoam has no carbon black by weight. Ecofoam is suitable for use with Zincalume, Colorsteel, and Colorcote products.

Exposure testing and work carried out by CSIRO in Australia has shown that satisfactory performance and compatibility with Zincalume and Colorsteel can be achieved by washers and sealing materials that are free of or contain low levels of carbon black. This is providing that the carbon black does not lead to significant electrical conductivity of the washer or sealing material. 

Further recommendations were made based on test data determined by CSIRO on the electrical resistance and potential of materials with different carbon contents. 

The manufacturer of Zincalume and Colorstell, BHP, has recommended that: whether used a a washer, sealing filler strip, or weather seal, rubber-based sealing materials in contact with either Zincalume or Colorsteel G2z product must not have carbon black filler levels of more than 15% by volume or 25% by weight.