Cracking caulk as I paint

[CharlesLevy]

Thanks,

Have got some ronseal quick drying sealer. Will let you know if it works tomorrow.

Charles

 

[Pigeon85]

This problem is often more about the paint than the caulk. Vinyl paints seem to crack more than paints with high acrylic resin contents (found in the more expensive paints), i should think supermatt is pretty much zero on this scale!

OB u/c normally works and the one you have is fine, apply it with the smallest brush you have and wipe off any excess, my preference is gardz as i've never had a problem with paint cracking if gardz is used to seal the caulk. I find it hard to believe that anyone who does a lot of painting has not had this problem at some point. You might be able to get the aerosol version of zinsser bin in B&Q but any sealer/stain block SHOULD work, you basically need a barrier between caulk and paint. Also worth mentioning that with new plaster you should apply the mist coat before caulking because the plaster will suck the moisture out the caulk

honestly have never had this problem, think I have just got lucky over the past 10 years

 

[Pigeon85]

Did you mist coat the walls first before caulking and painting

 

[CharlesLevy]

I think this is where I slipped up - I mist coated after the caulk.

 

[Pigeon85]

Could be the reason, never mind just seal as advised above unless you really want to cut it out I wouldn't bother though

 

[dcdec]

I reckon you've been lucky pigeon as i used to get it a lot before i started sealing it, especially with dulux vinyl matt

 

[Nige F]

The price should tell you all you need to know, and the spelling, which is an anagram of Sodaul. .

Caulking Hell

 

[Jameswren]

I've had the "cracked" caulk appearance recently and noticed it in the caulk itself then replicated in the paint.

I've tried Soudal, Polyfilla and Unibond with the same result each time - I've tried applying a small bead and a large bead, wetting lots, hardly wetting at all etc etc but it's been the same each time.

It is less apparent on woodwork which I then have primer, undercoat and satin over the top than it is on the emulsioned plasterwork.

 

[ads1]

Strangely I have used Unibond and not had a problem with it. But did have a problem with the non-nonsense screwfix stuff.

Unless of course unibond have changed what they put in the stuff recently.