Installation of Teranap

Teranap BGMs are easy to install and do not require any specialised thermal welding device or equipment. With training, it is easy for any semi-skilled labourer to correctly install the product.

The welds are required to be from 150mm wide. A propane torch is used to raise the temperature of the bitumen coatings on the surfaces to be joined. On the weld, the elastomeric bitumen of the two membranes (which is strongly adhesive) mixes together forming a water tight seal.  Another labourer walks behind with a roller and applies a slight pressure to ensure the join is well bonded.

An excess of bitumen of between 10mm and 20mm  extrudes out the side lap giving reliable visual confirmation that adequate heat has been applied.  The end result is a homogenous 200mm full-width weld.  Finally, a trowel is used over the seam edge with a detail torch to ensure the lap has been completely sealed.

The installation of small rolls 2m x 20m (< 200kg) require only small machinery to deploy.  Large rolls with a width greater than 4m (~1700 kg) come with a steel pipe core which extends 400mm either side beyond the membrane roll. These large rolls require the use of larger machinery with slings and chains.  No special spreader beams are usually required as the slings can be placed over the steel core ends. 
The high angle of friction allows for safe and easy movement by the installers both up and down the slopes being lined with the Teranap BGM. 

Please click on the link below to watch a short video on how easy it is to work with Teranap BGM. Labour can produce acceptable welds, patches and details after a short 1-2 hr training session.


No spreader bar rquired, Teranap is lifted using steel chains around the steel core

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