Was at makro today, and the stuff can be picked up for cheap.

1meter by 2meter for about 25 baht

It does isolate, but it is very flammable and when it burns the fumes are very toxic.

I agree with Carib, it is efficient but burns easy and very toxic when it does.

Don't think about it! As above

Also, keep this stuff away from electrical cables as it can make them brittle over time (leeching).

Termites love this stuff. Pretty soon nothing but powder.

Now if I can invent a non-flammable Styrofoam, I and my 1.5 year old daughter can probably retire.