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Advantages of RAWMAT® HDB » Vs. Thermoplastics

RAWMAT® HDB is a fundamental breakthrough in barrier technology, and leaves the factory as a complete, functioning system.

The following table explains the advantages of RAWMAT® HDB over Thermoplastics in more detail.

Thermoplastics RAWMAT® HDB
Require smooth lean concrete blinding before application. RAWMAT® HDB can be laid directly onto a compacted sub-base, often no oversite blinding required.
Can be laid in rain but seams are difficult to weld effectively. RAWMAT® HDB can be laid in any weather and onto wet concrete or other surfaces.
Very labour intensive using highly trained specialist installers. RAWMAT® HDB can be laid quickly and easily by unskilled labour.
Welding of seams is very complex operation. RAWMAT® HDB forms self sealing overlaps, no welding, tapes or rolling required to seal joints.
Unbonded and so leaks are not localised. Bentonite bonds permenantly to the structure, no possibility of tracking.
Protection is always required, boards or geotextiles. In most applications no need for protection boards or geotextiles.
Spot-fixed with adhesives. RAWMAT® HDB is nailed to the structure and will self-seal to punctures.
Once punctured no self-healing - difficult to locate & repair. RAWMAT® HDB will self-seal to punctures; bentonite bonds permenantly to the structure, with no possibility of tracking.
PVC breaks down in contact with bitumen. RAWMAT® HDB is highly resistant to hydrocarbons including bitumen.
Not robust. RAWMAT® HDB is a very robust material which can withstand the rigours of construction sites.

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