Amish made hardwood

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 Post subject: Moisture test
PostPosted: Tue May 04, 2021 2:08 pm 
New User

Joined: Thu Feb 04, 2021 6:57 am
Posts: 4
Hi everyone,

How do you moisture test subfloor if there is already hardwood below? Do I rip up a board or two? Thanks!


 Post subject: Re: Moisture test
PostPosted: Wed May 05, 2021 12:34 am 
Prized Contributor

Joined: Tue Jun 16, 2015 12:02 am
Posts: 1587
There is a special attachment that plugs into a moisture meter that has long prongs. The attachment has a driving weight that slides along a rod so it can force the inch and a half prongs through the finished floor and reads at the tip of the prongs using the right meter.
Lignomat has a tool that plugs into a miniLigno C that will tell the moisture content up to 20%. Above 20% is not necessary to have an accurate measurement since wood can start to rot above 19% moisture content, unless you are using it for a kiln drying valuation.
The sub-floor measuring device does leave a couple of small holes, but saves taking up the finished floor. The holes will need to have putty to cover.
I think other companies also have a device that can be driven into the sub-floor.
You may be able to measure the sub-floor moisture if you can get at it from below, maybe crawl space or through the finished ceiling below.

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