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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