DIY Home Improvement Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
Hi! First of all, let me say that I am a total beginner and am not even confident I can explain my question using the proper technical words. I live in Japan and am about to have a house built. Before choosing between 2 house builders, I asked them what kind of wall insulation they recommend in order to reach a 0.3 UA value withing the house. Provided they use the same windows, ceiling and floor insulation I would like your advice on 2 kinds of wall insulation.

1. 105mm glass wool as interior insulation, plus 120mm EPS exterior insulation.

or

2. 105mm urethane board interior insulation. Each company is assuring their material will not loose any of their insulation power even after 50 years, but I find that hard to believe. All things equal (including prices) which is better? Which is more reliable in the long run?

Thank you, David
 

·
Registered
Joined
·
2 Posts
Discussion Starter #3
Thanks. I actually discovered that I could probably change the glass fiber for rock wool which seems to be better albeit more expensive. In any case, whichever I choose (glass or rock) it would be blown in, and not in batts.
 
1 - 3 of 3 Posts
Top