membranes and tanking

[ringy]

hi guys

we are in the prosess of moving away from bal wp1 (which we have used now for 3 years) tanking system to dittra matt and kerdi waterproof membrane
Reason we have come to this after 7 jobs using this with no plywood (just straight on to new 18mm chipboard flooring)
(tiles used where 12mm applestone 610 x 405 spider stone same size 20mm creamafile marble 600 x 600 12mm and 600 x 600 travertine and 610 x 410 travertine) we have had no problems what so ever all our jobs run with underfloor heating in (some cases the shower walls have been heated as well)
we feel as the wp1 is in direct contact with both the floor and the adhsive with customers runninng there underfloor heating at 30 deg c sometimes for 6 to 7 hours the matting because of the seperation from the substrate gives us a better comfort zone
also from a waterproofing point of view it offers excellent tanking properties just thought would get yor views
:whatchutalkingabout

 

[DHTiling]

I use membranes all the time..............much better job than soloution kits..IMO...

 

[White Room]

If the customer did'nt have ufh would you have continued using wp1, Do see your point on using the uncoupling membrane on the chipboard floors, As you described a "safety zone".

 

[ringy]

hi whitebeam

no the bal product is ok we use there adhesives all the time but in our opinion even without the ufh we would still changed the dittra stuff is in another league

 

[wetdec]

Hi

I wrote this yesterday it may be of interest :

To do a thorough job of tanking with a membrane you want to be using flexible tape, collars and corners etc so any movement in corners and material transitions doesnt cause fractures.

I had this discussion with the rep from the the producers of these membranes the other day and out of a portfolio covering all we see and more only a couple use a flexible jointing system. To quote him why the hell do they bother with flex this and flex that to balls it up with non flex jointing and collars. The answer of course is price.


The problem with Schluter is they still dont use flexible tapes etc so Durabase is without question the prefered method for the pro instal. On wall tanking Durabase WP membrane and on uncoupling / waterproofing floors Durabase CI are our prefered methods and of course Wetdecs are ahead on price.



tiler


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