Plastering query

Cainy18 · 24 Mar 2024

Hi all.

I am trying to DIY an 1850s mill cottage. I was hoping to skim the walls in my living room with some Knauf pro roll max as they have been poorly looked after and need a clean surface. When preparing everything, I noticed 3 large bubbles in the plaster and when pressing them they crumbled. I'm now left with this (see image). It looks like the render behind is slightly damp but there are no signs of damp anywhere else and the pointing on the house it perfect. Any advice on how best to proceed with fixing the patches? I have no budget at all to get a plasterer so that isn't an option.

Bonni · 24 Mar 2024

Cainy18 said:
Hi all.

I am trying to DIY an 1850s mill cottage. I was hoping to skim the walls in my living room with some Knauf pro roll max as they have been poorly looked after and need a clean surface. When preparing everything, I noticed 3 large bubbles in the plaster and when pressing them they crumbled. I'm now left with this (see image). It looks like the render behind is slightly damp but there are no signs of damp anywhere else and the pointing on the house it perfect. Any advice on how best to proceed with fixing the patches? I have no budget at all to get a plasterer so that isn't an option. View attachment 337789

No budget and expecting a miracle solution?

Is it a solid wall?

A solid wall needs lime mortar. If there's cement, your wall won't breathe. It needs lime mortar inside and paint should be clay based.

Solid walls are never damp free, but moisture needs to breathe out, so lime mortar everywhere and breathable paint, clay based.

Deviate from that, then enjoy more damp

Cainy18 · 24 Mar 2024

Not at all. I only moved in recently and am taking it one day at a time. It is a solid wall. Exterior about 2 ft thick. I expected to find lime plaster with the age of the house but have been surprised to find none.

I'm not responsible for any of the choices made previously in the house but am determined to do my best to fix it.

Despite your somewhat snippy tone, thanks for taking the time to reply, even if it appears you did so in order to feel somewhat superior. I'll start looking into lime plaster and sorting the rendering.

Wayners · 24 Mar 2024

Do some research before you proceed.
Limelite renovating plaster might be what is required

Cainy18 · 24 Mar 2024

Thank you. I'll take a good look.

Wayners · 25 Mar 2024

This also might be of interest

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Plastering query

Cainy18

Bonni

Cainy18

Wayners

Cainy18

Wayners

DIYnot Local

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