Width of overlap section of Sikaproof®-808 TPO waterproofing membrane welded using Leister hot air welding machine: Varimat V2, Uniroof 700, Uniroof 300, Unidrive 500, Triac ST/AT

SikaProof®-808 is a TPO based sheet membrane for below ground waterproofing of reinforced concrete structures. A special hybrid bonding layer on the membrane forms a full and permanent dual bond with the concrete structure. The membrane can be pre or post-applied.

When thermal fusion is applied using an automatic welding machine Varimat V2, Uniroof 700, Uniroof 700, Unidrive 500, Triac ST/AT for the joint between waterproofing membranes, the lap length between the membranes is 80mm, which depends on the requirements  of  the  automatic  welding  machine. The minimum length of thermal fusion width is 35mm. For additional details, please refer to the picture below picture.

When thermal fusion is applied using an hand welding machine Triac ST/AT  for the joint between waterproofing membranes, the lap length between the membranes is 50mm, the minimum length of thermal fusion width is 20mm.
 

Please  ensure  that  the  transportation,  storage,  and  installation  of  the  products  are carried  out  in accordance with the instructions, stated in the Product Data Sheet and Method Statement.

The information, and, in particular, the recommendations relating to the application and end-use of TPO, PO, PVC, EVA products, are given in good faith based on Our current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with manufacturer's recommendations.

In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product’s suitability for the intended application and purpose.