Bal WP1 too thin?

[zeeman1972]

Hi all, looking for a little advice if possible.

I'm putting in a ground floor wetroom, the floor is an underfloor heated sand and cement screed with tile backer walls to 2 sides and Gypsum plaster set on the other. I have used the Bal WP1 kit to tank the shower area and entire floor of the room however, after following the kits instruction to the letter, I have found that despite trying to get the coating on as thickly as possible, that I have used a lot less than the 10 sqm of surface should have taken (4KG vs the 6-7KG on the BAL coverage guidance). I have also noticed that there are definitely thinner and thicker patches.

Should I recoat? If so when can I do this, after 24 hours?

Or should I just leave it as is, as the floor and lower walls seem to be well covered.

Cheers for any advice, wish I had found this forum before embarking on my current spec for this room, things I have read on here would have changed my approach.

Steve

 

[Colour Republic]

I can't remember for sure but on the packaging it says when you can re-coat, I think it says you should do it within 4-8 hours of the first coat but could just be making that up. Have you looked at the instructions for re-coating?

 

[zeeman1972]

Thanks for the quick response Colour Republic. No there seems to be no mention whatsoever of recoating times or recoating at all to be honest.

 

[chrisroe]

i would keep going till you run out concentrating on the lower area

i think its too weak and prefer the Mapei gum

 

[Colour Republic]

another question would be... did you put the Bal matting down on the floor?

 

[zeeman1972]

Thanks for your comments Chrisroe, unfortunatelty I have coated myself out of the room now so will have to wait till tommorow before I start again.

Hi Colour Republic, yes I did put the matting down on the floor and taped all of the joints with lashings of waterproof coating.

 

[Colour Republic]

I would just give it another coat tomorrow then, I normally apply it with a trowel rather than a brush. The very nature of applying like this means you will get a thicker coat

 

[dagger]

personally i trowel on all wet tanking systems....and use fibreglass !

 

[zeeman1972]

Colour Republic, dagger, thanks! will get the trowel out tommorow then!

 

[tommyzooom]

You can apply another coat of this after the first coat is dry, in fact it is reccomended to apply two coats in oposite direction to the first, (ie up and down first, across second)to ensure even coverage.