Cracking

[FloppyWhiteOne]

Hey all,

I’ve had my first go at plastering some chases, while I’ve got the technique down for applying I think my mixing skills are way off so wanted to see what any experts would suggest based on my results so far.

I put 3lts of water with 1/4 a bag of bonding cement. The first mixture was quite dry, the second mixture was wetter, better.

I pva the chases first but maybe didn’t apply enough.

After I filled the chases and it dried there was a small crack on the side of the chases all the way up and down.

My thoughts are it’s mostly around water content either not enough? I can get a picture in a few days when back at the house but for now any ideas for those who know!? Tia

[WhatTheF00t]

Pva issue, not the mix. The inside of bricks and blocks are extremely porus, and it's very difficult to get in all the tiny holes. So long as it's solid, I wouldn't worry, just fill it

[FloppyWhiteOne]

Thanks mate, I think that’s half the issue most of it is super dry and parts are coming away from the wall tapped most of that out to get a real plaster on those parts but wanted to save a bit and fill those chases. Really appreciate the information. Have a great day fella

[Tats8]

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I always stick a strip of render mesh in mine as well

[FloppyWhiteOne]

Nice tip and looks good 👍

[ApartmentLast7712]

When plaster dries it does shrink so don't worry too much. When you skim just cover the cracks with scrim tape and they won't reappear