Dealing with blow plaster walls

[OldProperty]

Hi all,

Our property is a old 1800s stone wall property. On the outside, some of the mortar has been repaired by someone patching it with concrete (not lime and cement which I believe should of been used).

In the inside, the plaster has blown in quite a few places, mostly at the bottom of the walls. Today I took a SDS chissel to the wall to remove some of the plaster to inspect what was going on and to see what the walls consisted of.

I've attached some photos, you can see the original stone and then there appears to be two separate layers of plaster and then a final "skim" of plaster.

We are thinking of taking the walls back to stone (remove the plaster with SDS) and then batten, insulate, plasterboard and then plaster (skim) the walls.

After any advise or suggestions. Does the above sound OK, will the walls be able to breath?

Thanks

 

[algeeman]

Hi all,

Our property is a old 1800s stone wall property. On the outside, some of the mortar has been repaired by someone patching it with concrete (not lime and cement which I believe should of been used).

In the inside, the plaster has blown in quite a few places, mostly at the bottom of the walls. Today I took a SDS chissel to the wall to remove some of the plaster to inspect what was going on and to see what the walls consisted of.

I've attached some photos, you can see the original stone and then there appears to be two separate layers of plaster and then a final "skim" of plaster.

We are thinking of taking the walls back to stone (remove the plaster with SDS) and then batten, insulate, plasterboard and then plaster (skim) the walls.

After any advise or suggestions. Does the above sound OK, will the walls be able to breath?

Thanks
View attachment 22775 View attachment 22776 View attachment 22777

reminds me of my first child being born

 

[JessThePlasterer]

You definitely want it re pointing properly on the outside and your method would be fine on the interior. You could use thermal boards. Some on here might suggest lime though but I'm not massively knowledgeable on that

 

[OldProperty]

Ok thanks. On the outside I'm thinking of trying to remove any of the existing mortar and re-point with lime cement. I've read sometimes cement mortar walls on an old stone wall can cause the stone to be brittle but ours doesn't appear to be too bad. Worth noting its not all been re-pointed, only certain areas by the looks.

Insulation wise, anything specific? Is insulation such as Rockwool ok even if its in direct contact with the stone work between the battens?

 

[vfr12]

That’s called modern time butchery

 

[OldProperty]

That’s called modern time butchery

You on about my chissel exercise ?

 

[vfr12]

You on about my chissel exercise ?

No. I am on about the plasterer/s who have worked on that wall

 

[OldProperty]

Ah

Yeah.. looks like a few attempts of plastering the walls has been done, guessing over a period of years. Looks like at least 3 attempts.

 

[Danny]

When i saw the title i though i was gonna see pics of.my job on here

 

[beader]

You have woman's hands ....