Posts by dubman • Home Renovation & Building Forum

dubman

Joined 8 September 2012

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dubman

9 September 2012

Re: Polystyrene boards on attic joists -condensation?Heating, Cooling & Insulation

Sep 09, 2012 6:16 pm

Actually the ceiling is parquet boards - 9 cm wide x 14 mm thick, so that isn't an air seal. So now I'm thinking of drilling several 1-inch holes in the polystyrene boards (maybe 6 for every square meter) and filling them with rockwool, so that there is some ventilation in there to let moisture esca...

Actually the ceiling is parquet boards - 9 cm wide x 14 mm thick, so that isn't an air seal. So now I'm thinking of dril...

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dubman

8 September 2012

Polystyrene boards on attic joists -condensation?Heating, Cooling & Insulation

Sep 08, 2012 9:52 pm

Hi, I have installed 8cm thick polystyrene boards on *top of attic joists, so there is nothing *between the joists, and therefore there would be a build up of heat there, between the ceiling and the Polystyrene boards. But now I'm a bit worried about possible condensation, and, eventhough the attic ...

Hi, I have installed 8cm thick polystyrene boards on *top of attic joists, so there is nothing *between the joists, and ...

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