Paint over silicone sealant.

[LadyHomeLover]

My helper accidentally used silicone bathroom sealant instead of decorators caulk. He has laid a long line of it in the corner of the room from ceiling to floor, to fill a gap in the tongue and groove cladding. He also used it to fill some miscellaneous holes, gaps etc in the cladding. He then painted over the silicone with Dulux kitchen and bathroom paint. This has slid off the silicone leaving ugly lines and patches of white.

Heeeeelp!

Can we caulk over the silicone to create a paintable surface? Can I take an electric sander to the flat bits?


Lhl.

 

[Burnerman]

Please don't try to sand silicone (or caulk, for that matter) .....it'll end in tears!
Zinnser 321 will cover silicone well enough, and you can top coat on top of that.
John

 

[LadyHomeLover]

Please don't try to sand silicone (or caulk, for that matter) .....it'll end in tears!
Zinnser 321 will cover silicone well enough, and you can top coat on top of that.
John

John I have zinsser primer but its not called 321. It is called Zinsser Bullseye 123.
Will it do?

 

[Burnerman]

My apologies - I meant to say 123. No worries, I guess you are talking about the shellac based B-I-N which is again a product used to cover difficult surfaces, prior to painting.
I've used this stuff on a upvc window frame and to my surprise, it stuck well!
I'd think very carefully about trying to remove the silicone - although it wasn't suitable in the first place - it sticks like no ones business.
John

 

[LadyHomeLover]

OK John I will try the zinsser tomorrow. Sheer luck I have that particular primer!