Recent content by sparkymarky78

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    UK Moisture in floor advice...please

    Was that because you had a freshly laid screed or slab though which just needed to dry out ? I think in this case if I did that it would only be a temporary fix - this slab was laid in the 1970s so it would have dried out a long time ago. As the moisture vapour in the floor is the same in...
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    UK Moisture in floor advice...please

    Self level over that (using moisture tolerant slc) to level it out, then ditra then tile I guess. I wanted electric ufh for the tiles so was thinking electric ufh cables on top the ditra, but guess that could be a bad thing and make humidity worse as whilst warm air holds more water than cold...
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    UK Moisture in floor advice...please

    Hiya, concrete floor under the backer boards. Must be a few voids of tile adhesive under the boards. Couple of places you walk you feel the backer boards compress down a little over a small area. I've just drilled, rawl and screwed one defelction area using the large metal board washers to pull...
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    UK Moisture in floor advice...please

    So figure your option of the ditra mat is worth a shot ontop of the boards. Oh and just noticed there are dips in the boards/not level. Ffs
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    UK Moisture in floor advice...please

    Thankyou. That's what I don't get, marmox boards are water proof yet the floor hygrometer on top of them reads 80% RH today at 20 degrees....and the Relative humidity in the floor will be even higher in winter when the floor is colder. Tempted to spend a day, cover the shower glass and walls...
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    UK Moisture in floor advice...please

    Ok thankyou. Do the channels in the underside of the ditra mat direct allow moisture to flow along their length? If so does that moisture end up going to the walls?
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    UK Moisture in floor advice...please

    So you would, sbr the backer boards and then ditra mat? Would you use flexible tile adhesive to apply the mat or something else? Thankyou
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    UK Moisture in floor advice...please

    Oh is it? No I checked for leaks underneath the tray. All seems dry. All rooms concrete floor read similar 75+ RH with the hygrometer, give or take a couple of percent so pretty sure its due to moisture/vapour coming up from ground but the carpeted rooms deal with it obviously the vinyl would...
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    UK Moisture in floor advice...please

    Yep, he said to use self levelling over the marmox multiboards and then paint a 2 part epoxy resin dpm. He will tile over that he said.
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    UK Moisture in floor advice...please

    Measured the floor with a floor hygrometer, rained yesterday and the RH on top of the boards was up to 82%. Seems to sit about 70% without rain. Tile and vinyl say 75% RH maximum permissible level So I definitely need some sort of moisture barrier. Tiler is recommending using some self...
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    UK Moisture in floor advice...please

    Some sort of cloth tape supposed to stop moisture between boards but I doubt it's efficacy, ok I'll remove it....
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    UK Moisture in floor advice...please

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    1000028641.jpg

    • sparkymarky78
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    UK Moisture in floor advice...please

    Thabkyou. I've just removed the marine ply a minute ago. Ditra mat on top of those tile backer board still OK and will that stop the moisture coming up?
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    UK Moisture in floor advice...please

    Renovated the bathroom on my 1970 bungalow last year. Took up the old pink floor tiles with sds. Chunks of what i assume is self leveller or maybe screed (?) came up with them. Left with Concrete slab. laid insulated coated (cement topped) tile backer boards (marmox) using a thick amount of...
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