Internal cement render of bricked kitchen hatch

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W

Western Province

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Hi,

I am about to cement render a recently bricked-up kitchen hatch (about 1 metre squared). The depth is about 2 inches from the standard red house bricks, and the surrounding plaster is lime. I know that I could use a 'fat' lime, but vowed never to use again after getting it in my eyes, and spending 3hrs in casualty!

Anyway, I was thinking of just sticking 2 coats of 4 to 1 sand cement on to a suitably wet background, with 24hrs between coats, and then floating up, before a thin coat of gypsum finish plaster.

I would be interested to know the 'standard' procedure...

Cheers,

PS - I was going to stick a piece of plasterboard in the depression, then just gypsum that, but the guy wants a 'solid' wall finish.
 
my standard procedure would be to use two coats of hardwall or even three.. i wouldnt bother trying to render two inches thick unless you absolutely have to...
welcome to the forum btw :)
 
Thanks for the prompt reply Chris!

I was also going to use thistle hardwall, but forgot to say that the guy has some bricklayers also working at his place, and he wants me to use the same cement as them (he doesn't trust new-fangled bagged stuff like hardwall!) Could I put first coat cement, then hardwall, then a thistle multi-finish plaster skim?

My apologies for the seemingly obvious questions, but I have not been back in the UK for long, so I'm not really 'up' on current plastering products!
 
not sure what max thickness per coat is for hardwall but it'll let you get away with more than render..
why not let him watch you scratch coat it in s+c and as soon as he gives you a few hours on your own, hardwall it and skim it soon as the hardwalls ready.. ;)

i was stood a wickes counter yesterday and a bloke was buying a tub of ready mixed patching plaster...

reading the tub aimlessly as you do it says you can put in on up to 50mm in one coat...

dunno how far a 10kg tub is gonna go at 50mm though ;D
 
p.s. at one time i would have said just keep building up your s+c letting it take up between layers but church would have shot me at dawn.. :D
 
50mm is a lot of thickness to make up in two coats, are you skimming the whole wall or just making good
 
thats what the tub said...
never tried it but im guessing its like a lightweight filler or somesuch...
bloke also had a 2 foot cold chisel, some sandpaper and a paintbrush... who needs a plasterer?
 
Chris W said:
thats what the tub said...
never tried it but im guessing its like a lightweight filler or somesuch...
bloke also had a 2 foot cold chisel, some sandpaper and a paintbrush... who needs a plasterer?
Click to expand...


That guy with the patching plaster and chisel Chris do you no what his name is on this forum ;)
I've bought some one coat plaster that said it could be put on upto 50mm thick, I only used it up to about 30mm to build out an angle, but it did that no problems so could be the answer on this patch.
 
Because 50mm of render will shrink and split like crazy and the skim will almost certainly be hollow. :o :o
 
Can't say I have had that happen before. I have rendered loads of stone all easy 50mm and skimmed the same day
may get a few cracks but that all, never hollow sounding.
 
for such a small area hasnt the builder got more important things to worry about ???....hardwall it mate
 
i did wonder how come the bricklayers ended up leaving a 2 inch gap back to finish...
whats wrong with cutting up some thermalites on edge? or snap headers? bollox to the next trade eh?
come to that how come the wall ended up being nearly 7" thick? assuming its a party wall and the bricks are set back 1/2 the other side?
 
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