Browse Forums Building A New House Re: Wet Area Waterproofing on Concrete slab 3Feb 11, 2015 10:00 am Mrs Brown Bear I have a powder and a laundry that are on a concrete slab. My waterproofing has only been done around the edges. Is this normal? I thought concrete absorbed moisture. FWIW: Concrete tanks that stand 2.1mtrs tall and hold that head height of water don't show any signs of seepage, it is only the cracks that leak. Most concrete tanks are 100mm thick same as your slab(or less) and use concrete with the same strength concrete at 25 mpa. It is an illusion that 100mm of water will ingress into a slab. The waterproofing is to stop water/moisture from ingression into an adjacent room that is all. Also this problem and another could be over come by having smooth transitions into wet areas and the waterproofing extend to "bund' the wet area. nothing more nothing less. Why is there a step into a wet area? Just bone lazy and lacking skills to make a smooth transition at the threshold of the door. Ask your builder will there be a step into bathroom and if so why so? There is NO good reason to have a step. Where you are coming from is where you are going to... Hey There. No problems re jumping in. My original question was "should I have waterproofed" the concrete slab before putting batons down. We have been told we should… 7 4329 CDC Housing Code 3 When to apply Floor Area external face of wall vs Gross Floor Area internal face of wall. Reading thru CDC Housing Code 3, lets take a lot 915sqm.… 0 16566 I have researched this topic in detail recently but for another state which has no licensing requirements at all so any handy man can waterproof any old way and not have… 1 8480 |