Amish made hardwood

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 Post subject: 5" Solid Hickory Acclimation Question
PostPosted: Thu Apr 20, 2017 6:32 pm 
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Hello All,
The wood flooring has been sitting in the house for about 10 days. I got a moisture meter and I'm getting readings from 9% to 15% on the hardwood depending on the piece and where I take the reading on the plank.
The sub floor has been installed for about 8 years. It's plenty dry at 5%.
I have flooring that has been installed in my house for about 8 years and it reads at 12%.
The humidity in the house is around 55-60%. I live in Oregon and it's been a little more humid than normal but nothing crazy.
I'm confused because the finish in place 5" solid maple that has been installed for 8 years reads 12%. I've been reading that you don't want to install the floor until the wood and the sub floor are at a 2% difference. At this pace is seems like I'll be waiting for a long time to install the floor. Do I continue to wait until I get a 7% reading across the board? What's a normal MC for hickory given the environment?
Any help would be appreciated.
Thanks
Steve


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Amish made hardwood

 Post subject: Re: 5" Solid Hickory Acclimation Question
PostPosted: Fri Apr 21, 2017 12:05 pm 
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Location: Tucson AZ
What meter is this your using, an impedance meter or an electrical resistance meter (pin meter)?
You should really use a professional grade meter designed for woods. A impedance meter utilizes a specific gravity adjustment table and a specific gravity list of different woods.
The pin meter will or should have a species correction chart.

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Stephen Perrera
Top Floor Installation Co.
Tucson, Arizona
Floor Repairs and Installation in Tucson, Az
http://www.tucsonazflooring.com


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 Post subject: Re: 5" Solid Hickory Acclimation Question
PostPosted: Fri Apr 21, 2017 12:41 pm 
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It's a pinless General Tool model MM8 from Home Dept. It has 4 settings drywall, masonry, softwood and hardwood.

This is how it's explained how it works in the manual.....
The meter exploits two physical phenomena to make its measurements:
1. The linear relationship between a solid material’s moisture level and its dielectric constant—and therefore its capacitance.
2. The so-called fringing-field effect—the slight spreading of the electric field produced by current flowing between two electrodes when both electrodes are on the same side of a material.
Thanks,
Steve


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 Post subject: Re: 5" Solid Hickory Acclimation Question
PostPosted: Fri Apr 21, 2017 9:04 pm 
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I think that the glue in the plywood has affected the accuracy of the meter. If your existing finished flooring is on the plywood and the maple has a reading of 12% then the sub-floor under it will be very close to the same moisture content.Your Hickory should be fine to go over the sub-floor, in my opinion.


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 Post subject: Re: 5" Solid Hickory Acclimation Question
PostPosted: Fri Apr 21, 2017 10:51 pm 
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Thanks for the response. I would have never thought of it that way.
Is it normal to have such a wide variance in hickory? 8-15% from board to board. Some boards show a different reading from one end to the other. For example one end reads 9% the other 11%.
I just don't want to rush it and kick myself later.
Thanks,
Steve


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 Post subject: Re: 5" Solid Hickory Acclimation Question
PostPosted: Sat Apr 22, 2017 1:44 am 
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The density of the wood can affect the electrical resistance. An average of readings will be more accurate.


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 Post subject: Re: 5" Solid Hickory Acclimation Question
PostPosted: Sat Apr 22, 2017 1:15 pm 
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Ok, that makes sense. I also took a reading of some prefinished maple I had sitting around from another project and it also read 8-11%. It's been sitting for years.
I think I'm ok to get started. Thanks for talking me through it.
Steve


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