Paint keeps flaking on render

knightstyle

Well, it looks as if the new paint is not peeling from the render but from the old paint so I would suggest cleaning of all of this before stabalising. We had a house similar to yours in Hove and found out that it had been painted after the war with some awful paint that was the only thing available and nothing would stay on it permanently. The next owners had it sandblasted off.

happyhero

knightstyle wrote: »

Well, it looks as if the new paint is not peeling from the render but from the old paint so I would suggest cleaning of all of this before stabalising. We had a house similar to yours in Hove and found out that it had been painted after the war with some awful paint that was the only thing available and nothing would stay on it permanently. The next owners had it sandblasted off.

Many thanks for your reply knightstyle.

Someone said to me that they still use lime render today and he would expect it if it was mock Tudor because the lime render allows for movement which would be the desired effect if it butts up to the black timber you see in the picture but I have my doubts as it it is a 1930's house and most people say it is unlikely to be lime render, whats your opinion on this was he talking rubbish?

Can you tell quite well from the pictures that the paint is coming off from previous paint and not the render and if so I am not sure how to get it all off, so how should I proceed if I am doing it myself, i.e. just get the worst off perhaps or what else would you suggest if I am doing it myself?

hoff123

Hi, you can test to see if you have lime by using a bit of acid. Brick acid applied to lime will fizz violently.
I don't think your house will have been constructed using lime, it is more likely that a previous coat of paint has broken down to a chalky consistency which means new layers of paint are not bonding properly.
If this is the case, then stripping off the old paint would be the only real solution for a lasting finish.
If you do have lime then you should use a breathable paint not a modern emulsion.