ᐅ Does the structural builder need to paint the joint between the insulation (expanded polystyrene) and the brick wall black?
Created on: 5 Mar 2018 22:28
M
Marchonisch
Good evening
Today, we had a plasterer visit who is supposed to do the exterior rendering for us.
While walking around the house together, he said that our structural builder should first paint black at the junction between the polystyrene insulation and the brick wall (outside).
We built on a slope. One of our floors is partly below ground level.
The concrete walls are painted black and covered with the mentioned polystyrene.
This sounds logical, but the structural builder immediately said this is not necessary. He even suggested that the black bitumen could penetrate the wall...
What do you think about this? I’m also surprised that the second plasterer didn’t mention anything about it.
Today, we had a plasterer visit who is supposed to do the exterior rendering for us.
While walking around the house together, he said that our structural builder should first paint black at the junction between the polystyrene insulation and the brick wall (outside).
We built on a slope. One of our floors is partly below ground level.
The concrete walls are painted black and covered with the mentioned polystyrene.
This sounds logical, but the structural builder immediately said this is not necessary. He even suggested that the black bitumen could penetrate the wall...
What do you think about this? I’m also surprised that the second plasterer didn’t mention anything about it.
K
Knallkörper10 Jul 2018 21:06Well, without insulation on components in contact with the ground, it just (almost) doesn’t work. And I don’t know of any better material for that than XPS.