I am in the process of building an extension with two bedrooms. I've got all
the studwork done for the internals walls and one side plasterboarded. What
is the normally accepted 'filling' for acoustic/thermal insulation. Ie., do
I put Kingspan type boards inbetween the studs or rock wall etc?
[Default] On Wed, 25 Jul 2012 10:17:54 +0100, a certain chimpanzee,
Those requirements are two separate things. As an internal wall, you
would want sound insulation, but wouldn't want thermal unless the two
rooms were at markedly different temperatures. For the former, use
mineral wool batts; they absorb some frequencies. The rigid insulation
will just act like a drum and transmit them through the wall.
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