- Joined
- 6 Mar 2009
- Messages
- 150
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I've just painted a brick outhouse with B&Q white masonry paint.
The outhouse hadn't been painted for about twenty years and was about half bare brick. I removed all the loose old paint with a stiff broom and have given it two decent coats of the masonry paint a day apart.
In some areas the new paint has already cracked and come unstuck to reveal the old paint and brick underneath - it looks almost like a crackle-finish paint which has crackled too much.
Any ideas as to what the problem is? Could algae or fungal growth be to blame? There was a hint of some sort of light orange-brown dusting on some of the old paint.
The outhouse hadn't been painted for about twenty years and was about half bare brick. I removed all the loose old paint with a stiff broom and have given it two decent coats of the masonry paint a day apart.
In some areas the new paint has already cracked and come unstuck to reveal the old paint and brick underneath - it looks almost like a crackle-finish paint which has crackled too much.
Any ideas as to what the problem is? Could algae or fungal growth be to blame? There was a hint of some sort of light orange-brown dusting on some of the old paint.