Large void in between two internal plastered walls

[Newasaurus]

Hi all,
New to learning plastering and I thought the best way to get better is to practise on my own walls in my house. Although I've come across a little problem (actually a large and deep one) and unsure how best to tackle it.

I have an upstairs unused chimney breast wall with what I thought was perpendicular to an internal cinder block wall although upon taking off the 1000's of layers of wallpaper the plaster was falling out and crumbling away. I have a 4cm or so gap between the wall which is about 30cm deep with lots of wood squeezed in between the gap. Which I'd imagine was used to hold the old plaster.

This is a terrace house with this wall been the neighbours wall. No structural issues but just void between the two walls.

I been recommended to fill the void with as much expanding foam as possible and to then use bonding over the foam. Although I'm worried this will crack and fall away again. Would it be best to still fill the void with expanding foam and then fit some metal lath or mesh for the bonding to adhere to better? Or is there a glaringly obvious solution that would work best.

Any suggestions would be much appreciated.

Kind regards

James

 

[Sitemonkey]

Hi all,
New to learning plastering and I thought the best way to get better is to practise on my own walls in my house. Although I've come across a little problem (actually a large and deep one) and unsure how best to tackle it.

I have an upstairs unused chimney breast wall with what I thought was perpendicular to an internal cinder block wall although upon taking off the 1000's of layers of wallpaper the plaster was falling out and crumbling away. I have a 4cm or so gap between the wall which is about 30cm deep with lots of wood squeezed in between the gap. Which I'd imagine was used to hold the old plaster.

This is a terrace house with this wall been the neighbours wall. No structural issues but just void between the two walls.

I been recommended to fill the void with as much expanding foam as possible and to then use bonding over the foam. Although I'm worried this will crack and fall away again. Would it be best to still fill the void with expanding foam and then fit some metal lath or mesh for the bonding to adhere to better? Or is there a glaringly obvious solution that would work best.

Any suggestions would be much appreciated.

Kind regards

James

Screw eml to the timber and bonding coat it back in . Damp down the existing crumbly backing first

 

[Steve Brown]

Hi all,
New to learning plastering and I thought the best way to get better is to practise on my own walls in my house. Although I've come across a little problem (actually a large and deep one) and unsure how best to tackle it.

I have an upstairs unused chimney breast wall with what I thought was perpendicular to an internal cinder block wall although upon taking off the 1000's of layers of wallpaper the plaster was falling out and crumbling away. I have a 4cm or so gap between the wall which is about 30cm deep with lots of wood squeezed in between the gap. Which I'd imagine was used to hold the old plaster.

This is a terrace house with this wall been the neighbours wall. No structural issues but just void between the two walls.

I been recommended to fill the void with as much expanding foam as possible and to then use bonding over the foam. Although I'm worried this will crack and fall away again. Would it be best to still fill the void with expanding foam and then fit some metal lath or mesh for the bonding to adhere to better? Or is there a glaringly obvious solution that would work best.

Any suggestions would be much appreciated.

Kind regards

James

This is the perfect example for Chrispy to explain the benefits of his favourite product!

 

[Spitandpolish]

This is the perfect example for Chrispy to explain the benefits of his favourite product!

Vaseline ?

 

[Monkey Boy]

Can you see into neighbours bedroom?

 

[Cockney]

Can you see into neighbours bedroom?