A community for plasterers to chill and people needing help

First off I know **** about **** so I thought I’d ask the people in the know.

Looking to have ext. block work wall rendered and just sourced a bunch of KC1 for free. 2 things…

1) Am I exclusively tied into Fassa’s products and “cycles”. Any room for deviation, aka cheaper, I’m trying to hide it but cheaper is preferred.

B) is it any good? I’ve seen Ki 7 bashed elsewhere online and I wondered if it’s Fassa or specifically Ki 7.

I was skim coating a wall, got barely half way through on the first coat before I had an emergency and had to drop everything.

Wall was left half completed with the first coat. Now what’s the best way to finish the wall? Finish the rest of the wall with the first coat? Then apply second coat after the first coat has fully dried?

Or would would PVA the fresh dried plaster be ok ready for the second coat?

Hi! Recently made a plaster mold for slip casting pottery. On my first go I had some of the inside of the mold flake off, so now I have to make a new mold and am left with a lump of plaster with no seeming use.

It’s essentially a partially hollow cylinder, I was considering adding a little more plaster to turn it into a pedestal or similar— these are my big questions:

1. Will another pour adhere to the plaster that’s been cured for weeks?

2. Do I need to do any special prep to get paint to adhere?

3. Do I need to be concerned with paint trapping any potential moisture?

The mold is made of pottery plaster. I just want to save it from being a total waster. Thank you plaster friends!

Hi,
I am building a partition wall in a 1934 property between 2 bedrooms to create a built-in wardrobe for each bedroom.

There is a brick pillar at each end that as been finished with dot-and-dab plasterboard and skim or plaster direct to the brick. The pillar is 165mm face to face.

My partition wall is being constructed parallel to these pillars. I'm using metal c-studs to construct the partition. I'll then screw plasterboard to the studs and get a plasterer to skim finish.

I want to know the maximum I can be out with the existing face of the pillar (on each face of the partition wall) that can still be made up by the plasterer to give a level finish between the pillar and the partition wall?
The metal c-stud track is 72mm wide and I'll screw on 12.5mm sound bloc plasterboard to each side of the partition. So before plastering, the partition will be 97mm thick leaving 68 mm difference.

I thought I could double-board one side of the partition which would increase the thickness to 109.5mm. That still leaves 55.5mm difference, split between each side that's roughly 28mm to be made up in skim on each side.
Should I double-board each side? I'm looking for advice from plasterers on how to construct this partition that will make it easiest for the plasterer to get a good finish.

I should say that since one side of the partition will be the inside of the other bedroom's wardrobe so potentially I could sacrifice the finish on that side but I'm aiming to get the best finish on each side.

Please advise on how you'd proceed.

Many thanks

EDIT: - Perhaps I should ditch the metal c-stud and buy some 130mm thick timber?

Never have I installed cornice before. I need to install a cornice and join it to a cornice that is already there in the left and right hand side. What’s the easiest way to do this? Is it a case of pulling off the left and right hand side cornice or can you scribe or cope the new one to fit?

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There are multiple walls which need plastering throughout my house. I am flipping the property, so I thought it would be smart if I could do it myself and save the thousands a plaster could cost for this house and any more in the future (sorry guys). I have watched some videos on YouTube, but I think its ridiculous to just start, on the house I want to sell, without any practice. I want to see if you guys have any recommendations for good plastering courses for beginners that would put me up to speed enough to do it myself. And not too expensive

I don't do much DIY, so, I feel like I need practice before the real thing.

Any tips or YouTube videos you guys have will also be super helpful.

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Hi all, looking for some advice on where we might have gone wrong/what to do now...

We're in the middle of a house renovation and recently had several rooms freshly plastered. We until they'd dried out and then applied a mist coat - 50:50 using a contract matt emulsion (paint recommended by Brewers and other decorators we know). When we wipe our hands over the surfaces that have had a mist coat, it leaves a slight whiteness to our hands, and the mist coat does completely wipe off with a damp cloth if we apply pressure (I've read that's normal - but just checking!)

We've painted a few rooms with normal emulsion and so far so good, but in one room, we applied frog tape between the ceiling and wall to cut in, removed it the same day and it peeled off some of the paint from the ceiling. You could peel the paint off almost like it was wallpaper! Why might this be?

We've scraped that ceiling back to pure plaster now so we can essentially start again but it was very messy and an absolute nightmare. Needless to say, we don't want to be doing this in every room as some are essentially 'finished' and our only clean spaces in the house!!

The trouble is, we've followed the same process everywhere so are worried we're going to have a recurring issue here. To be clear, other rooms haven't bubbled or cracked - they look fine. In the room where the paint peeled off the ceiling, some of the wall paint peels too but it's not as bad as the ceiling, in that it comes off in small patches rather than big sheets. Do we need to remove all of the wall paint and try to get back to bare plaster or can we just sand the patches back and repaint?

Sorry for the long message. We've trawled countless forums and thought we did everything right in terms of the steps for preparation (this isn't our first reno) - wiping surfaces down, using a mist coat, letting things dry etc. All paints are water based too - no vinyl here. The only thing I can think is that we were without heating for a long time, and that room was one of the coldest. Could that have impacted it? Hoping to reassure my partner that the whole house won't necessarily be ruined... 👀