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

Originally Posted by 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

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

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

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!

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

Originally Posted by 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

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.

still must leave 4 weeks before tiling

Originally Posted by top tiler

still must leave 4 weeks before tiling

I fully agree.

Originally Posted by 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

You need to prime if you're using a cement based adhesive. I like to use apd neat.

Originally Posted by 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

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

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

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

As carlite finish aint about now, The only reason for adding cement is when setting beads, How could anyone use a floating coat with cement chucked in with the speed it would go off. Running moulds use casting plaster

i was up all nite last nite worrying about that

So you should be

Hey. Thx guys for replies. I also rang thistle today to ask them what they think and he said about 2 weeks. So do you guys recon on about 1 month then? I'm using travertine (4 diff sizes making random pattern so was planning to use cement based addy) Everyones so helpful on this forum. Cheers guys

Originally Posted by whitebeam

As carlite finish aint about now, The only reason for adding cement is when setting beads, How could anyone use a floating coat with cement chucked in with the speed it would go off. Running moulds use casting plaster

Who said carlite finnish aint about,is certainly big over here being the most popular finnish used and again the majority of plasterers use a handful or so of cement in it to send it on a bit

In the past lime was added to carlite finnish no more than 50% for the final run in moulds run on situ

Originally Posted by pjtiler

i was up all nite last nite worrying about that

pmsl.....

Originally Posted by Unregistered

Hey. Thx guys for replies. I also rang thistle today to ask them what they think and he said about 2 weeks. So do you guys recon on about 1 month then? I'm using travertine (4 diff sizes making random pattern so was planning to use cement based addy) Everyones so helpful on this forum. Cheers guys

Don’t forget the 20kg limit on plastered walls. I seem to remember another chap being told to rip his bathroom apart and he was using travertine with cement based adhesive.

Originally Posted by Wylie

Who said carlite finnish aint about,is certainly big over here being the most popular finnish used and again the majority of plasterers use a handful or so of cement in it to send it on a bit

In the past lime was added to carlite finnish no more than 50% for the final run in moulds run on situ

Where's here, Have'nt been able to get it from any merchants down my way for years

whats the 20 kg rule?

Originally Posted by dgilesy

whats the 20 kg rule?

It's the maximum amount of weight that plaster can take per square meter, like tiles, adhesive and grout.

Originally Posted by whitebeam

Where's here, Have'nt been able to get it from any merchants down my way for years

Where are you from mate? Here in N.ireland in the year 2OO8 carlite finnish is the best we can get for skimming occasionally pinnacle is used whan carlite doesn't make the grade

Originally Posted by Wylie

Where are you from mate? Here in N.ireland in the year 2OO8 carlite finnish is the best we can get for skimming occasionally pinnacle is used whan carlite doesn't make the grade

South east uk, I can't even buy it over here the multi finish took over which is a shame lovely finish to work with. When the plaster shortage was on we was getting stuff from southern Ireland

Originally Posted by dgilesy

whats the 20 kg rule?

http://www.tilersforums.co.uk/tilers...tml#post113608 have a look at this

thanks felkin

thanks for the thread but it says i cannot access this page yet.

You should be able to see this one....

All the questions I asked when i joined - Answered

Oli

Originally Posted by whitebeam

South east uk, I can't even buy it over here the multi finish took over which is a shame lovely finish to work with. When the plaster shortage was on we was getting stuff from southern Ireland

We would get it from the south aswell though it usualy means longer setting time,never heard of the multi finnish

It's taken over on all floating coats but you must try and get the finish on the same day otherwise it gets hard work. British gypsum have bought out another finish Durafinish which is a lot harder than any other for schools and commercial premises