Hello all
Done a spot of plastering this weekend, where I re-did some of the plaster in the porch.
The bottom foot or so needed replacing which was taken back to brick.
Saturday afternoon I put a scratch coat of render onto the bricks (5:1:1 sand cement lime and waterproofer and bit of plasticiser). I also scratched the render to ensure adequate key for the next coat.
Sunday, scratch coat was set, so I put hardwall on top bring up level with the surrounding, and then applied multi over to blend in when the hardwall was set.
All fine, until trowelling the multi. When trowelling I noticed some bubbles appearing. Not been many, but seemed to get worse the more trowelling I did, so stopped trowelling as soon as I got something I was reasonably happy with!
Not had this before - is this common with a render undercoat?
Or have I just been lucky so far and can happen with gypsum undercoats too!
Done a spot of plastering this weekend, where I re-did some of the plaster in the porch.
The bottom foot or so needed replacing which was taken back to brick.
Saturday afternoon I put a scratch coat of render onto the bricks (5:1:1 sand cement lime and waterproofer and bit of plasticiser). I also scratched the render to ensure adequate key for the next coat.
Sunday, scratch coat was set, so I put hardwall on top bring up level with the surrounding, and then applied multi over to blend in when the hardwall was set.
All fine, until trowelling the multi. When trowelling I noticed some bubbles appearing. Not been many, but seemed to get worse the more trowelling I did, so stopped trowelling as soon as I got something I was reasonably happy with!
Not had this before - is this common with a render undercoat?
Or have I just been lucky so far and can happen with gypsum undercoats too!
