Laying new loft insulation over old boards

26 Jan 2021
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United Kingdom
Hi all,

I am going to add a new layer of loft insulation at cross angles to the existing 100mil between the joists. There are a lot of old floor boards already laying cross ways over the joists which were used for storage space. Should these be removed before I but my later down. Will it make any difference if I just lay the new insulation on top of these boards?

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