Tanking a shower with wall recess

[DazJWood]

All,

I have used Hardibacker boards for my shower area (and around the bath). I have built in a recess in one of the stud walls so I can store shower gel and the like. (I have also done the same on one of the walls above my bath).

I am now looking at tanking solutions. I bought the Homelux membrane some time ago but am now wondering whether a paintable solution such as the BAL WP1 or the Dunlop Waterproof kit may be a better option. I am concerned that fixing the Homelux in around the recess may be problematic and not provide robust waterproofing (I would have a fair amount of overlapping around all the corners).

With the paintable solution there would be just the application of the joint tape and then a coat over. I am thinking this would be a lot easier plus should be more robust.

Has anyone any advice or has anyone tanked over recesses and hit any problems?

Thanks,

Daz

 

[Ken Bruty]

Hi Daz,

Firstly I would, ensure all the Hardi Backer board 3mm joints are siliconed, then for quickness, you could use the Wedi board jointing tape which is set into the wet tile adhesive as you tile up to the wall, then you can fix your tiles over the top of the tape, just make sure you have no voids under the tape by pressing it well into the adhesive. Quick and easy and you do the joints as you go along.

 

[DazJWood]

Hi Daz,

Firstly I would, ensure all the Hardi Backer board 3mm joints are siliconed, then for quickness, you could use the Wedi board jointing tape which is set into the wet tile adhesive as you tile up to the wall, then you can fix your tiles over the top of the tape, just make sure you have no voids under the tape by pressing it well into the adhesive. Quick and easy and you do the joints as you go along.

Erm thanks but I'm not sure you've read the question. I'm was asking about the best method to tank the recess. Paintable solution or membrane.

Incidentally, I may be wrong but I'm not convinced using silicon in the joints of the board is ideal. Once filled and then smoothed over will leave areas where tile adhesive cannot adhere to.

Thanks nevertheless!

Has anyone else got any advice or experience with tanking recesses?

Thanks,

Daz

 

[heavytrevy]

Id go the paintable membrane
this should help you http://www.bsa.qld.gov.au/SiteColle...s/Tech Info/Waterproofing Standard AS3740.pdf

any other questions ask away ...