Moisture & Efflorescence Coming Through Grout

[MW Smith Ceramics]

Is there a possible risk with moisture being forced to the walls , or does the moisture tolerant package , let this migrate slower or push elsewhere . Have many natural floors that can't be sealed due to migrating moisture and need to be left fully breathable.

Hello there Bob,

I'm guessing it would drain off elsewhere, maybe s risk to the walls.....as long as it doesn't come up through the grout!....well I hope!....I'm basically going off ardex technical......are you saying you have layed stone floors that take in the moisture so can't ever be sealed......I,ve been looking this up and a lot of vinyl layers use 2 coats of liquid dpm by ardex then arditex na if there's a chance moisture will migrate to the surface.....so that could be an option.....what would do in this situation bob?....thanks

 

[MW Smith Ceramics]

I think you have a leak somewhere

Hi Gary,

Floors half up now back to the latex, no sign of any leaks & everything was bone dry when I installed the porcelain.too......I've left the floor for today so will go back tomorrow and see if surface of latex is still dry as it was when I left

 

[Lithofin BOB]

Hi, sorry, not a tiler ( although I seem to have the banner on here) restored many and specified many new floor that will require to breath or for clean ups and then maintained only , not sealed ( always older floors) . Impregnators are breathable to a degree, but on older floors with issues and no dpm we steer clear.

I am not experienced enough on this to comment on the install, sorry just concerned if there was moisture ,where it was going to end up

 

[J Sid]

I see there is a radiator where you a lifting tiles, that really needs to ruled out as a possible leak problem.
the pipe, if copper, could have not been lagged properly and the screed could be corroding it.

 

[MW Smith Ceramics]

I see there is a radiator where you a lifting tiles, that really needs to ruled out as a possible leak problem.
the pipe, if copper, could have not been lagged properly and the screed could be corroding it.

Good point there Julian,

Client did say they had a plumber check the rad out & all was fine but is it!......think I'll have a look at that tomorrow as I'll be lifting more tiles right underneath the rad in the morning.......

Hi, sorry, not a tiler ( although I seem to have the banner on here) restored many and specified many new floor that will require to breath or for clean ups and then maintained only , not sealed ( always older floors) . Impregnators are breathable to a degree, but on older floors with issues and no dpm we steer clear.

I am not experienced enough on this to comment on the install, sorry just concerned if there was moisture ,where it was going to end up

Hi, sorry, not a tiler ( although I seem to have the banner on here) restored many and specified many new floor that will require to breath or for clean ups and then maintained only , not sealed ( always older floors) . Impregnators are breathable to a degree, but on older floors with issues and no dpm we steer clear.

I am not experienced enough on this to comment on the install, sorry just concerned if there was moisture ,where it was going to end up

 

[MW Smith Ceramics]

Hi, sorry, not a tiler ( although I seem to have the banner on here) restored many and specified many new floor that will require to breath or for clean ups and then maintained only , not sealed ( always older floors) . Impregnators are breathable to a degree, but on older floors with issues and no dpm we steer clear.

I am not experienced enough on this to comment on the install, sorry just concerned if there was moisture ,where it was going to end up

Totall

 

[MW Smith Ceramics]

Totally see where your coming from there Bob.....where that moisture could end up I have no idea .......I've never had an install where grout is becoming wet !......I'm genuinely lost with this one!.......

 

[Rich Midge]

Could the old quarries have been used as a rudimentary DPM? So by lifting some and then patching this has allowed passage of moisture from below. If you're back to leveller I'd be going with an epoxy DPM. Ultra do a two pack, colour coded, then Prime it N then your good to tile. Should only raise the level by a couple of mm.

 

[peteablard]

I've just done a similar thing with a vinyl wet room. The original floor was laid about 18 months ago (Not by me)
The latex had blown under it and after ripping up the vinyl I found it to be really damp. The bungalow it's in was originally a doctors surgery any there are terrazzo tiles fixed throughout with no DPM. I used Ardex NA, then Ardex DPM1C, NA over the top then fitted new vinyl. I've used their liquid DPM a few times and never had any problems after.

 

[J Sid]

Hi Julian,

All the rooms off the hallway are old wood flooring & no work done before me, also had a plumber out to check the house for any leaks and no sign of that......I've started taking some of the floor up this morning and the surface was damp in places.......so back to the latex now and looks dry......pictures before, when tiles removed and then after adhesive removed as follows......

View attachment 81094 View attachment 81095 View attachment 81096

wood flooring onto timber joists or on the same screed?