Internal s&c float & set

[Spreada]

Hoping for some help!
For an internal s&c float and set wall that needs a scratch coat then float coat. Would you use waterproofer in both coats?
There quite warm walls so would assume needs to be some waterproofer in the scratch to allow to work with the float. And then waterproofer in the float to allow me to skim a few days later with dampening the wall down

 

[spunky]

I would on the second coat maybe not the first a bit of suction may help rule it

 

[Cockney]

Hoping for some help!
For an internal s&c float and set wall that needs a scratch coat then float coat. Would you use waterproofer in both coats?
There quite warm walls so would assume needs to be some waterproofer in the scratch to allow to work with the float. And then waterproofer in the float to allow me to skim a few days later with dampening the wall down

All depends on how quick you are? Lol

 

[Smudger1]

Usually only use waterproofer in s&c on external walls.

 

[Spreada]

All depends on how quick you are? Lol

lol true I was more worried the float or skim would hang with it in both coats as it’s only one wall. Haven’t really done much internal s&c so thought id jump on here and ask. Cheers guys

 

[Spreada]

Usually only use waterproofer in s&c on external walls.

Can I ask why? I know some people don’t use it internal & skim the same day and some use it so they can skim a few days after

 

[essexandy]

Hoping for some help!
For an internal s&c float and set wall that needs a scratch coat then float coat. Would you use waterproofer in both coats?
There quite warm walls so would assume needs to be some waterproofer in the scratch to allow to work with the float. And then waterproofer in the float to allow me to skim a few days later with dampening the wall down

No

 

[Spreada]

No

Just the 2nd?

 

[Lastlaff]

Are you a plasterer?
How big is the wall?
What is the background?

 

[Spreada]

Are you a plasterer?
How big is the wall?
What is the background?

I’m a beginner mate been doing it 2 years so still new to it the guy I work for only goes lime so don’t know much about cement rendering.
ain’t a small wall i wouldn’t loose it it was more it hanging I was worried about. It’s a brickwall with paint on on some parts which has been scored with a grinder.

 

[Lastlaff]

Why not just do it in lime then - you know the product and how to finish it, saves you the stress if you’re not familiar with s&c. The suction and strength of the background determines what product, mix proportions, additives you use. 99% of the time I just splash the wall to check the suction, if it pulls in rapid, wet it again - you do want a degree of suction, that’s part of the bond and strength of the floating coat.

 

[Spreada]

Why not just do it in lime then - you know the product and how to finish it, saves you the stress if you’re not familiar with s&c. The suction and strength of the background determines what product, mix proportions, additives you use. 99% of the time I just splash the wall to check the suction, if it pulls in rapid, wet it again - you do want a degree of suction, that’s part of the bond and strength of the floating coat.

I could do it’s just not what the customer asked for. I’ll have a think will more than likely leave it out the scratch and a bit in the top so can skim a few Days letter. Thanks for the advice everyone