Unregistered

Hi. I'm doing a flooring job for a customer and she also wants me to tile a shower area. She's in a real rush to move in and wants everything done on the quick. She had the shower area plastered 2 days ago and she said that the plasterer said to her it'll be ok in the couple of days to tile on that. I'm not so sure! I know he's a plasterer and he should know what he's talking about but if the tiles fall off the wall coz the plaster isn't dry she's gonna come back to me and not the plasterer! So was just wondering if anyone on this forum knew the exact time to wait until you can tile on fresh plaster? Many thanks in advance Ross

grumpygrouter

1 Day per mm of plaster thickness is the drying time.

Grumpy


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top tiler

new plarster needs 1 month its not if it looks dry its to let the salt and eferresents to come out get a disclaimer do not prime it will react

woodie

Wait until it looks nice and dry tell her you'll do it on her back but prime it first. New builds want it done straight away never mind waiting a month, B....y builders!

top tiler

do not prime new plerster use bal white star get it in writing primer comes off on the back of the adhesive this happend to us 15years ago we retiled a site again ask gaz he works for bal

grumpygrouter

This would depend on type and format of tiles. if they are large format or porcelain/fully vitrified powder stuff would need to be used, in which case the plaster must be primed first.

Grumpy


Balancing Act Accounting
Turnover is Vanity, Profit is Sanity, Cash is reality!

top tiler

still must leave 4 weeks before tiling

grumpygrouter

I fully agree.

Grumpy


Balancing Act Accounting
Turnover is Vanity, Profit is Sanity, Cash is reality!

Branty

[quote=top tiler;116720]do not prime new plerster use bal white star get it in writing primer comes off on the back of the adhesive this happend to us 15years ago we retiled a site again ask gaz he works for bal[/quote]
You need to prime if you're using a cement based adhesive. I like to use apd neat.

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Wylie

Maybe there was additives put in the plaster to soften or speed up the setting time this would cause salts or a dusty efect like a loose layer

whitebeam

British Gypsum say the only thing you mix with plaster is clean water, Anything else will affect the setting times and could go off before you finish trowling the plaster

"Experience is simply the name we give our mistakes"

Wylie

Lime would be added to plaster for running a mold and also added to carlite finnish and the majority of plasters have used cement and still use it today to speed up setting time