Scratch coat still soft next day?

S

Stanbra

Member
Don’t do much of it, and just helping out friend.

Scratch coated yesterday using 4-1 with feb plasterciser . Didn’t realize but the cement we’ve used had plasticiser in already. (Master grade cement)

Came to mind top coat and still relatively soft. Could scrape off with scraper.

Should I leave to cure few more days before top coating.

Has too much plasticiser caused this?
 

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malc said:
No, it is not a time of year for the render to dry.
Click to expand...
Just out of curiosity, and if you’ve got the time, what’s your method to s&c rendering?

The man I used to work with was:
4-1 with plastersicer top coat
5-1 with waterproofed top coat
 
Stanbra said:
Just out of curiosity, and if you’ve got the time, what’s your method to s&c rendering?

The man I used to work with was:
4-1 with plastersicer top coat
5-1 with waterproofed top coat
Click to expand...
Two top coats eh, that's belt and braces for sure.
 
Stanbra said:
Don’t do much of it, and just helping out friend.

Scratch coated yesterday using 4-1 with feb plasterciser . Didn’t realize but the cement we’ve used had plasticiser in already. (Master grade cement)

Came to mind top coat and still relatively soft. Could scrape off with scraper.

Should I leave to cure few more days before top coating.

Has too much plasticiser caused this?
Click to expand...

Yes oveplasticised.

Leave it a week. But pop back after coating and dampen - not really soak it.

Strength of mix depends on substrate .
 
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