Help needed

[Dano1200]

Hi guys
Needing some professional help please.
Have a wall that’s had water damage but found the cause (not damp) lots of salts bleeding through plaster.
I’ve taken the walls back to brick, do I need to stabilise the brick with a salt neutraliser before re-plastering?
Also would you recommend sand and cement as a backing coat or can hardwall be used?
Thank you in advance

 

[Monkey Boy]

yes

 

[bobski]

Hi guys
Needing some professional help please.
Have a wall that’s had water damage but found the cause (not damp) lots of salts bleeding through plaster.
I’ve taken the walls back to brick, do I need to stabilise the brick with a salt neutraliser before re-plastering?
Also would you recommend sand and cement as a backing coat or can hardwall be used?
Thank you in advance

Yes

S and c really, with a salt inhibiting waterproof admix.
Many available.

 

[JessThePlasterer]

Let the brick dry out and you can brush away any salts

I personally hate cement. Where is the issue? Upstairs? Downstairs? Bay? Exterior wall?

What caused the leak?

 

[Cockney]

Let the brick dry out and you can brush away any salts

I personally hate cement. Where is the issue? Upstairs? Downstairs? Bay? Exterior wall?

What caused the leak?

Cement racism.

 

[Dano1200]

Cement racism.

Let the brick dry out and you can brush away any salts

I personally hate cement. Where is the issue? Upstairs? Downstairs? Bay? Exterior wall?

What caused the leak?

Exterior wall so I’d want a waterproof render rather than hardwall. Brushing away the salts isn’t enough to stop it bleeding through new plaster surely

 

[bobski]

Exterior wall so I’d want a waterproof render rather than hardwall. Brushing away the salts isn’t enough to stop it bleeding through new plaster surely

Wykamol Salt Neutraliser

Wykamol Salt Neutraliser is a surface treatment used to neutralise the harmful effects of salt to protect your plaster finish, after a DPC application

wykamol.com

Proper way is spray with this, then as I said above.

Other than that (using sand and cement), you could plaster with lime lite, safeguard, or wykamol damp resistant plasters, which stop any salt migration very well.

 

[paulf]

Cement racism.

Jess is a well known Anti-Cementite.

 

[JessThePlasterer]

Exterior wall so I’d want a waterproof render rather than hardwall. Brushing away the salts isn’t enough to stop it bleeding through new plaster surely

Limelite as long as there’s no penetrative damp, ie a leak. Cement is just awful in my opinion for most situations.

 

[bobski]

Some slurries and tanking systems work fantastic - in the correct environment.

All materials have their place.

 

[essexandy]

Limelite as long as there’s no penetrative damp, ie a leak. Cement is just awful in my opinion for most situations.

Well your opinion isn't worth jack, so shut up.

 

[JessThePlasterer]

Well your opinion isn't worth jack, so shut up.

Says the man who once asked me all about limelite

You concentrate on torturing fish you big lake nobhead

 

[ChrispyUK]

Says the man who once asked me all about limelite

You concentrate on torturing fish you big lake nobhead

Pond

 

[essexandy]

Pond

Pool

 

[JessThePlasterer]

Pool

Puddle