loft insulation

Postby djperrott » Sat Feb 28, 2009 6:08 pm

can anyone advise me on the following.

I am wanting to top up my loft insulation, however who put the last roof on, had left a considerable amount of rubble on top of the existing insulation.
I have now removed most of this but it has left quite a lot dust on top of the insulation.
Would it be ok to put a sheet of polythene on top of the existing insulation, ( leaving gaps for the air to circulate), to help contain the dust, before I top up with new insulation.
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Simply Build It

Postby stoneyboy » Sun Mar 01, 2009 5:21 pm

No, if you leave an air gap there will be no point in increasing the depth of the insulation. With no air gap you will get condensation forming.
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Postby djperrott » Mon Mar 02, 2009 10:21 am


Many thanks for the reply, seems like I'll just have to lay the new insulation on top of the old then & forget about the dust.
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Joined: Sat Feb 28, 2009 5:42 pm

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