Another newbie building a wetroom

[Diamond Pool Finishers]

just a question wetdec , lets say over the years water migrates through the grout of the floor of the wet rooms it cant go through the membrane of the tanking, so what happens to that water ,+ the continual wetting over and over,does it stagnate and start to smell???or blow the tiles off or what!!??

 

[wetdec]

Well in theory tiled walls work like walls in old houses they made them 18/24 inch thick they got wet in winter but never so wet it penitrated to the inside then in spring summer they dried out again. Because they were not totally submersed they didnt get soddern.

Grout in domestic situations works in the same way if there is any - and there will be moisture ingress it dries out in the dry period.

The tanking is there to prevent water damage from the installation, eg into the walls or through into downstairs. This can happen when there is a surface or joint failure allowing water to get in which as we all know happens over time.

Water from this type of water ingress would stay there but be prevented from damaging other areas by the membrane. In the case of our membranes smell doesnt become an issue really as there are few or no proteins between the tile and the membrane.

As for blowing the tiles cement based adhesives are pretty much bomb proof these days when it comes to water and with most cases of blowing with powdered adhesives its the substrate which fails.


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[diamondtiling]

When we fit out a shower room in say a leisure center the tanking is applied to the walls as normal, it carries on across the floor following the falls to the stainless steel pot that we have already fitted. The tanking then carries on into the pot which is connected to the waste water pipe. When the tray gulley is fitted to the pot it just slides in leaving a small 2 mm gap around it, it sits on lugs inside the pot to keep it level as it has falls built into it. This gulley is then supported by a screed and then the floor is installed with falls to suit. The 2mm gap is there to catch any water which may penetrate the tiles over the years, I have often wondered why this system is not incorporated into a preformed tray as it is there to stop water from just sitting beneath the floor tiles.

:20:

 

[Diamond Pool Finishers]

if water stays there then, and tile adhesive being only water resistant,in effect sponges the water up, then all this is behind the the tiles,it cant be good,! so would it not be better to have a fully waterproof covering in the first place instead of tiles + tanking like plastic??? and thats without UFH complicating it further

 

[wetdec]

Sorry Gooner


Sorry was thinking walls - on floors as mentioned by diamond tiling the membranes we use clamp into or are factory fixed into the gulley. Any standing water that could drain would run towards the gulley and be taken away.


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[wetdec]

would it not be better to have a fully waterproof covering in the first place instead of tiles + tanking like plastic??? and thats without UFH complicating it further

Well now that is a question and for 20 years there have been companies in the market place trying to sell Upvc, waterproof laminates and waterproof spray coates. All of these work in their own ways - Now all you need to do now is convince the purchaser that its what they need. (that is the surface will match their suite, not be held together with Silicon, work discreatley and not look like a public toilet)

 

[White Room]

Do know that there is alot of vinyl laid onto a tray and welded joints

 

[wetdec]

Well ye but this arises from safety / hygene rather than looks and is a less able / public area instalation practice


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