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black patches on roof timber

Postby roseflower » Thu Jul 07, 2011 7:41 pm

Hi does anyone know what black patches on a roof timber are? They seem dry not flacky or mouldy but have spread, tomber seems solid no smell either. Near to some lead flashing. No sign off water penetration. Do I need to treat before they get worse. Any ideas thanks
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Simply Build It

Postby Perry525 » Fri Jul 08, 2011 7:00 pm

You may have mould.
Mould comes in many colours.
The colour depends on what its growing on.
Buy a damp meter.
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