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Plastering

Any help with dot and dab onto waterproof membrane?

i can get the boards all plumbed up on the mesh membrane like i can on a normal wall but it seems to move afterwards and you can only really tell once its been skimmed. any help with stopping this happening would be great

3 Answers from MyBuilder Plasterers

you need to make sure you have enough fixings per mtr on the membrane it sounds like the weight of the boards and adhesive is too heavy for the amount of fixings you are putting in
Otherwise your adhesive mix is not stiff enough and therefore the boards are moving before the adhesive has cured

2012-03-09T21:55:01+00:00

Answered 9th Mar 2012

hi,
i always thought waterproof mesh has to have two coat a sbr render mix then skimmed!

2012-03-21T17:55:02+00:00

Answered 21st Mar 2012

you dont say where this waterproof membrane is if below ground level skim with tanking composite if above ground level skim with a sand and cement 3 to 1 mix add sbr to each mix when set hard and dry fix boards with a stiff dri lining compound mix

2012-04-04T09:20:03+01:00

Answered 4th Apr 2012

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