Hi, I have recently had a new kitchen fit and have had all of the walls and ceiling skimmed. At various points from 1.5 to 2 m high, the paint has flaked off the walls- or is in the process of. To confuse things more, this is happening on an internal party wall. My house is a 100+ year old mid-terraced house. Do I need to do extra preperation to these area's- or is it something a damp specialist should be looking at? Would it be covered by my isurance? Thanks, gareth.
Can you post pics. This internal wall, are there any water pipes built into or above it that may be weeping.
Well there must be a reason for this, that reason will almost certainly be because of water ingress at some point causing damp, if indeed it is a damp problem, hence the request for pics.
Were the wall just skimmed or were they patched before skimming? If patched before skimming what was used to patch the backing coat?
Hi, Please see above images, the first one is the hallway where I made the mistake of re-painting over where it had flaked and the other two are in the kitchen. The kitchen was patched in area's and fully skimmed, it was painted about a month after the plastering using firstly a watered down coat of matt emulsion followed by two coats. I can only imagine that any ingress would be on the external walls- which are the least affected. Regards, Gareth.
Ok firstly your problem is caused by salting or efflorescence. This is where moisture evaporates from the wall or plasterwork and leaves behind the salt on the surface as salt is unable to evaporate. Secondly My suspicions are confirmed re the patching of the walls before skimming and whatever was used to patch probably had traces of salt within, or there was damp in the wall. So now everything is drying out its leaving the salt on the surface. Just keep brushing off the salt from the wall surface until it ceases to surface, this can take anywhere from a couple of weeks to a few months. Only then, once the wall has stopped salting can you paint it and don't use a paint that contains vinyl. If you don't want to wait then it's a matter of hacking it off and replastering with a sand/cement render incorporating a salt retardant additive and skim over again don't use a paint that contains vinyl.
Hi, Thank you for your advise. Is there a durable paint which I can get which may withstand any damp / moisture connected with it being a kitchen which is generally humid? Regards, Gareth.
I had this same issue and despite all my best efforts, I had to have the exterior re-rendered as the walls were soaking up the water in the winter then leaving mass salt deposits when the walls dried in the summer, so even though all seemed good through the winter and I thought I had solved the problem, come late spring / early summer i began seeing bubbling again..
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