Hi folks,
I've recently had a chemical DPC installed on an internal wall where there was damp. I was told rising damp.
So chemical DPC installed. I was told to use a lime-sand plaster but used gypsum. I left the walls to dry for about a month and have now plastered over them only to find the same spots are damp where the rest of the plaster is now dry.
So, I read up a little bit. I understand that a lime-sand plaster is breathable so will allow moisture to escape (provided I also use a suitable breathable paint I guess).
My confusion is this... if the chemical DPC is functioning as it should, should I really need to use a breathable plaster? Surely once dry the wall should stay dry if the rising damp is stopped.
Also, if the DPC hasn't worked and I am still getting damp, wouldn't using a lime based plaster mask the damp by allowing it to escape? Obv moisture escaping the wall is good, but would this mean it would be hiding a failed DPC?
I'm a little confused about this so any ideas would be much appreciated. THanks in advance
I've recently had a chemical DPC installed on an internal wall where there was damp. I was told rising damp.
So chemical DPC installed. I was told to use a lime-sand plaster but used gypsum. I left the walls to dry for about a month and have now plastered over them only to find the same spots are damp where the rest of the plaster is now dry.
So, I read up a little bit. I understand that a lime-sand plaster is breathable so will allow moisture to escape (provided I also use a suitable breathable paint I guess).
My confusion is this... if the chemical DPC is functioning as it should, should I really need to use a breathable plaster? Surely once dry the wall should stay dry if the rising damp is stopped.
Also, if the DPC hasn't worked and I am still getting damp, wouldn't using a lime based plaster mask the damp by allowing it to escape? Obv moisture escaping the wall is good, but would this mean it would be hiding a failed DPC?
I'm a little confused about this so any ideas would be much appreciated. THanks in advance