White powder on timbers

Scoobio32 · 6 Oct 2008

We are doing a loft conversion but have noticed a white almost powdery substance on the lower ends of the existing rafters on one of the roof slopes. Any ideas what this might be?

Cheers all.

^woody^ · 6 Oct 2008

Salts bought out after the timber has got damp and dried off

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White powder on timbers

Scoobio32

^woody^

DIYnot Local

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