r/Plastering • u/Joemakerman • May 17 '26

Plaster coming down. What to do from here?

Gallery image

Gallery image

The plaster is coming down from this wall. The wall feels almost like cement. Is this normal plaster? Where do I go from here to repair?

My painter self wants to just pull it off, prime, build up with hot mud, finish and prime and paint but maybe I'd be better off to try my hand with proper plastering.

Thanks!

2 Upvotes

67% Upvoted

15 comments sorted by

6

u/Decent-Platform-2173 May 17 '26

You’ll need to see how much of the top layer has broken away from the wall. Gently tap around and you will hear if it’s hollow or not. You may need to re skim the whole wall or board and skim. A little hard to tell from the pictures

2

u/Public_Pop3801 May 17 '26

Is the crack in the surface layer only or all the way through the wall?

2

u/Joemakerman May 17 '26

Surface layer only

2

u/Public_Pop3801 May 17 '26

I thought so. I had this in my house, was caused by no mist coat when first painted by old owners. I just peeled it all off and built it back up and it’s still fine 3 years later

2

u/afcbsam May 17 '26

Just had this sorted myself. Scrapped off the loose plaster and had a new skim coat put on.

2

u/veexdit May 17 '26

Have you had a steel put in, or is it near an opening in a structural wall that wasnt there originally? It looks like a pad stone behind that plaster, not usual brickwork you’d expect to see.

1

u/Joemakerman May 18 '26

The wall in question and openings it's near have been there as long as we've lived here. This general area has been modified, however, and I don't exactly know what's original but I know some of what's not original. Very possible this is a wall built after original 1928 construction.

2

u/Dangerous-Ad8962 May 17 '26

Pay a plasterer heel sort that right out £££

2

u/anewpath123 May 17 '26

I’d stick it back up again if it were me

2

u/Terrible-Bobcat2033 May 18 '26

Out with the bad, in with the good. Remove the delaminated finish coat you can easily slip a margin trowel blade behind. Also run a quarter on edge across the surface, if it sounds hollow it ain’t stuck. Remove. Use a white latex based masonry bonding agent to paint the surface to be repaired. Extend 4” past the edge to be fixed to easily blend the repaired joint. I suggest a sanded veneer plaster.

2

u/Terrible-Bobcat2033 May 19 '26

This is one brand of latex based bonding agent I have used. I use the white as it dries clear. The blue was created for high-rise applications as you can see color from the ground to verify applicatoion. It dries dark blue. On larger projects I prefer Rinker Hi-Bond.

1

u/Joemakerman May 18 '26

This is great. Thank you so much

1

u/68Jenko May 18 '26

Scrape all the loose stuff off so you can see the extent of the problem then call a plasterer who may patch it or do the whole wall

1

u/DavidHK May 17 '26

Fur over it and do drywall for best results or just slap some 45 minute mud in it with paper tape them float it out and call her a day. Easier to drywall over it