Tech Talk articles

November 20, 2020. 7:37 AM

Waterproofing of roof slabs: substrate preparation and crack repairs

The need to seal cracks in concrete structures to maintain water-tightness seems obvious. However, if a waterproofing membrane is installed, how important is it to keep the structure crack-free? Isn’t it the waterproofing membrane’s function to…

November 20, 2020. 4:27 AM

Pre-wetting of concrete substrates: why?

Manufacturers recommend pre-wetting of cementitious substrates (concrete, screeds, plasters) before applying cementitious mortar over-lays eg grouts, waterproofing slurries, etc. There is a good reason for this and it is explained here. …

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