ᐅ Adhering Polystyrene Foam Boards to Concrete Walls (Basement Wall). Experiences
Created on: 25 Sep 2017 08:05
W
world-eHello everyone,
Does anyone have experience with gluing styrofoam boards to concrete walls on the inside and would like to share it? The basement walls (KfW40 new build) are insulated on the outside with perimeter insulation. Now I want to additionally install 4cm (1.5 inches) styrofoam boards on the inside to accommodate electrical installations and to help the room warm up faster.
Which adhesive did you use for this, and how were the boards plastered afterward?
Thank you very much
Does anyone have experience with gluing styrofoam boards to concrete walls on the inside and would like to share it? The basement walls (KfW40 new build) are insulated on the outside with perimeter insulation. Now I want to additionally install 4cm (1.5 inches) styrofoam boards on the inside to accommodate electrical installations and to help the room warm up faster.
Which adhesive did you use for this, and how were the boards plastered afterward?
Thank you very much
T
toxicmolotof25 Sep 2017 08:16First of all: I have no experience. But if I were going to do this, I would first check where the dew point might shift. 4cm (1.6 inches) is not that much, but it could be enough to cause a damp wall. I wouldn’t want that.
Why should it be polystyrene? What will be applied on top of it?
Why 4cm (1.6 inches)? That’s quite thick if something else will be added on top.
If I were to do this, I would use wooden battens and wooden boards on top. But it really depends on the intended use.
Why should it be polystyrene? What will be applied on top of it?
Why 4cm (1.6 inches)? That’s quite thick if something else will be added on top.
If I were to do this, I would use wooden battens and wooden boards on top. But it really depends on the intended use.
According to the U-value calculator, there should be no condensation issues. The polystyrene insulation will be plastered later. If I only used 2-3cm (about 1 inch), it would be too thin for the electrical installations. It is intended to be some kind of hobby or guest room. For example, Multipor insulation seems to be available only from 5cm (2 inches) thickness, as far as I have seen. Building a wooden substructure seems more complicated to me, especially due to the countless holes that would need to be drilled into the concrete.
Our basement living area is constructed as follows. The exterior walls are insulated with approximately 5cm (2 inches) of aluminum-foil-faced polystyrene foam and covered with drywall. Since this was done by the company Schwörerhaus, I assume it is professionally engineered. So far, two years after moving in, we have had no issues. You can probably find the exact construction details on their website.