Hardwood acclimation

Reply

  #1  
Old 10-05-20, 06:36 PM
M
Member
Thread Starter
Join Date: Dec 2008
Location: Mass
Posts: 323
Received 0 Votes on 0 Posts
Hardwood acclimation

I have my solid hardwood red oak floors sitting waiting for me to install. They have been sitting in the room since 10/1 and I plan to start installing 10/9. I have been monitoring w my pin moisture meter. Room is 55% relative humidity and 69 degrees.
subfloor is moisture of 10% and hardwoods are at a moisture of 5.5%. If I continue to let them acclimate will the moisture of the hardwoods get closer to 10%?
the hardwoods are 5inches wide and from what I read they should be within 2% of the subfloor moisture?
 
  #2  
Old 10-06-20, 04:09 AM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 7,102
Received 460 Votes on 429 Posts
About this same time three years ago I was starting my wood floor project, 3 rooms, 3/4x5 oak floor, wood was purchased late summer and project finished up around Thanksgiving.

All was well through winter, but come following summer when humidity started rising, the floor, the entire floor literally pulled itself up.

Had to go back pull everything up, reinstall, not as bad as it sounds but was fully unexpected.

After a lot of discussions/searches I found that the wide planks are super sensitive to moisture content. When they start sucking moisture they swell and start moving, have never seen anything like this in other floors I installed but they were all narrow planks.

I reinstalled in the middle of the summer, hot muggy conditions, max moisture, have had no issues. This summer I did the great room, middle of summer, hot muggy conditions.

I have vowed to never install any wood floor at any time other than summer, I dont like doing anything twice!
 
  #3  
Old 10-06-20, 04:26 AM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 24,698
Received 784 Votes on 721 Posts
The flooring in my house is 5" wide American cherry planks and we love to open the house for long periods in spring and fall so I knew moisture content and swelling was going to be an issue. Making things worse I have Advantech as my subfloor which is very moisture resistant and dimensionally stable so there is almost always going to be a disagreement between our sub and finish flooring. I installed my floor in late summer and I did not take moisture readings. In February when the house is very dry all the way through I can see where small gaps have opened between the planks. Then in summer when our humidity is higher the gaps are closed. Luckily we've had no trouble with buckling or lifting. I think it is due to installing when the flooring was at least partially swelled. The downside is putting up with the small gaps between planks in winter.

If you are an indoor person who's house is always closed and with the heat or AC running then I would pay more attention to the humidity levels as you are. If you are somewhat in between then you could go for a compromise and install your flooring while it still has a higher moisture content than your subfloor.
 
  #4  
Old 10-06-20, 08:01 AM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 7,102
Received 460 Votes on 429 Posts
Luckily we've had no trouble with buckling or lifting. I think it is due to installing when the flooring was at least partially swelled.
In my case it was the opposite, when we got the wood it was cool and dry, no heat in the house so wood sat for close to a month acclimating (drying out). It was an amazing event listening to the floor crack and pop as the summer came around, couple times it woke us up as planks and fasteners gave way.

I wish I had a moisture meter, would have been nice to know what the change was!
 
  #5  
Old 10-06-20, 07:32 PM
M
Member
Thread Starter
Join Date: Dec 2008
Location: Mass
Posts: 323
Received 0 Votes on 0 Posts
Thanks for all the replies
 
  #6  
Old 10-07-20, 06:10 AM
S
Member
Join Date: Sep 2020
Posts: 68
Received 4 Votes on 4 Posts
*********************************************************************
I wish I had a moisture meter, would have been nice to know what the change was!
*********************************************************************
Moisture meters are quick and handy but an accurate account of moisture throughout a sample can be calculated mathematically.

 
  #7  
Old 10-07-20, 06:40 AM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 7,102
Received 460 Votes on 429 Posts
can be calculated mathematically.
Sure, and where on my purchase invoice, or any form of instructions from the manufacturer/retailer would that green weight be located?
 
  #8  
Old 10-07-20, 06:58 AM
S
Member
Join Date: Sep 2020
Posts: 68
Received 4 Votes on 4 Posts
Not significant. Moisture content can change in transit. It's a long way from china.
Check MC when you receive it. If it is within reason install it. If MC is too great acclimate it until you are satisfied with the MC. If MC is too low when you receive it acclimate it until you are happy with it.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: