na get your mixes right and it shouldnt crack, shouldnt need to be thick either, and should be sound to skim the next day.oasis said:i fort it was bad to do 2 coats in one day? i fort building up render quite thick in one day would cause more cracks? and as for commin back the next day 2 skim i also fort you were to give it a few days to shrink in case of cracks lol good i must treat sand and cement like royalty! not to say i havent done 2 coats on large patchs before within a day.. apply coat lelt it pull in then top again.. ect
Onecoater said:Seems to be some variation in techinique to a fireplace...
Are there any plasterers on the forum that have experience with this?
As well as doing normal fireplaces, there must have been some guys that have had to plaster prestigious places like big halls or stately homes? Imagine the heat from one of those fireplaces! If that can hold then it should be good enough for anything i'd imagine.
What is the traditional way they did fireplaces?
flynnyman said:na get your mixes right and it shouldnt crack, shouldnt need to be thick either, and should be sound to skim the next day.oasis said:i fort it was bad to do 2 coats in one day? i fort building up render quite thick in one day would cause more cracks? and as for commin back the next day 2 skim i also fort you were to give it a few days to shrink in case of cracks lol good i must treat sand and cement like royalty! not to say i havent done 2 coats on large patchs before within a day.. apply coat lelt it pull in then top again.. ect
oasis said:flynnyman said:na get your mixes right and it shouldnt crack, shouldnt need to be thick either, and should be sound to skim the next day.oasis said:i fort it was bad to do 2 coats in one day? i fort building up render quite thick in one day would cause more cracks? and as for commin back the next day 2 skim i also fort you were to give it a few days to shrink in case of cracks lol good i must treat sand and cement like royalty! not to say i havent done 2 coats on large patchs before within a day.. apply coat lelt it pull in then top again.. ect
what do call the right mix, added fibers in scratch coat 4-1 and a 6-1 finish? with added lime in top coat and waterproof in scratch?
trust me its the best way but more cost and peace of mindflat boy skim said:use the vitcus system https://shop.vitcas.com/vitcas-heat-resistant-plaster-16-p.asp
i have just done a job with it base coat and finish coat ,its not nice to use but its heat proofRMK said:Anybody use the vitcas system? What's it like to use and what's the process? I assume this is the 'no-come back' solution.
Ps- Cheers for the comments spreadz. Feel a bit better now! Obviously I wouldn't dab the inside of a chimney breast.
RMK said:Anybody use the vitcas system? What's it like to use and what's the process? I assume this is the 'no-come back' solution.
Ps- Cheers for the comments spreadz. Feel a bit better now! Obviously I wouldn't dab the inside of a chimney breast.
lol ;D you should have used firelineflynnyman said:RMK said:Anybody use the vitcas system? What's it like to use and what's the process? I assume this is the 'no-come back' solution.
Ps- Cheers for the comments spreadz. Feel a bit better now! Obviously I wouldn't dab the inside of a chimney breast.
Dabbed the inside of loads of fire places and never had any come backs, but to be honest there wasnt any survivors![]()
oasis said:you'v been very helpfull of late flynny!
flynnyman said:oasis said:flynnyman said:na get your mixes right and it shouldnt crack, shouldnt need to be thick either, and should be sound to skim the next day.oasis said:i fort it was bad to do 2 coats in one day? i fort building up render quite thick in one day would cause more cracks? and as for commin back the next day 2 skim i also fort you were to give it a few days to shrink in case of cracks lol good i must treat sand and cement like royalty! not to say i havent done 2 coats on large patchs before within a day.. apply coat lelt it pull in then top again.. ect
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There you go all you have to do is listen to someone with experience who knows what they are talking about
what do call the right mix, added fibers in scratch coat 4-1 and a 6-1 finish? with added lime in top coat and waterproof in scratch?
Render usually cracks for 3 reasons, 1) movement............... not much you can do about that
2) mixes toooooooooooooooooooooooooooo strong...................dont use too much cement
3) Drying toooooooooooooooooooooooooo quick................................control the suction on your background.............................oh sorry should of said 4) maybe if its toooooooooooooooooooooooooo thick oh i should of said 5) top coat stronger than your scratch........................................oh my god i should of really said 6) using the wrong sand so there you go. oooooooooooh no ive just remembered 7) lack of key on background.......................oh yeh maybe 8 ) but this could come under 3) but could be caused by drying toooooooooooooooooooooooo quick coz of the room temperature so on that note im sure you will agree there is a bit more to it than throwing it all on the walloh yeh lime may help but thats another episode
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