DIY Doctor UK DIY Forums • Help Needed to Identify Dark Stain on Floor Joists

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Help Needed to Identify Dark Stain on Floor Joists

Posted: Mon Feb 15, 2016 12:09 am

by malB45

Hi

Looking for help to identify dark stains on edges of floor joists in images attached, is this a sign of damp ?

thanks

Re: Help Needed to Identify Dark Stain on Floor Joists

Posted: Mon Feb 15, 2016 7:32 pm

by malB45

: img 1

Re: Help Needed to Identify Dark Stain on Floor Joists

Posted: Mon Feb 15, 2016 7:35 pm

by malB45

attached image

Re: Help Needed to Identify Dark Stain on Floor Joists

Posted: Wed May 11, 2016 1:38 am

by Jarek

Hello
If on side is external wall it might be damp. But to be sure please just use damp meter.