walnut lumber

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Forum topic by chrisncarrie posted 03-29-2009 09:16 PM 1199 views 0 times favorited 7 replies Add to Favorites Watch
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52 posts in 2806 days

03-29-2009 09:16 PM

Topic tags/keywords: question walnut

i recently purchase 200bdft of kiln dried walnut lumber and i’ve ran across alot of pictures of guys stacking each board apart. Do i need to stack each board individually since its allready been dried or is it fine to lay them on top of each other on a level surface? Is the reason they do that is to keep each board from warping or twisting?

7 replies so far

View BlankMan's profile


1488 posts in 2773 days

#1 posted 03-29-2009 09:56 PM

When I have kiln dried rough sawn lumber (or any kiln dried lumber) I stack it without sticking it. When I get rough sawn green lumber I stick it. The reason you stick lumber is to get airflow all around it so that it drys, if it is dry there’s no need to stick it. I also have a moisture meter so that I can check it to be sure.

-- -Curt, Milwaukee, WI

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52 posts in 2806 days

#2 posted 03-30-2009 01:09 AM


View cmaeda's profile


205 posts in 2974 days

#3 posted 03-30-2009 03:35 AM

If the humidity in your area fluctuates a lot, I would sticker it.

View BlankMan's profile


1488 posts in 2773 days

#4 posted 03-30-2009 06:20 PM

Humidity as reported is relative humidity and is dependent on the temperature. 50% relative humidity at 50 degrees F and 50% relative humidity at 80 degrees F does not mean there’s the same amount of moisture in the air. 50% relative humidity at 80 degrees F will have more moisture in the air then there is when it’s 50% relative humidity at 50 degrees F. That’s because the warmer the air the more moisture it can contain and relative humidity is the measure of the amount of moisture as a percentage of the maximum at that particular temperature.

So, if the temperature goes up and no moisture is added to the air the relative humidity will go down and vice versa. That would cause a swing in relative humidity when in essence the moisture content of the air didn’t change.

So if you’re worried about humidity you have to take temperature into consideration.

But you got me thinking. I’ve never had problems stacking kiln dried wood on my rack which is in the basement. Typically the temperature down there may get down to the 50’s F during the winter months (typically in the 60’s) and in the mid 70’s F during the summer. When I work down there in the winter I have a high efficiency wood burning stove (hides all my mistakes ;) ) that I fire up. That gets the basement in the 70’s F sometimes 80 if I really stoke it.

I have an old mechanical humidity gauge down there but now I’m going to get a good digital readout and track the humidity winter to summer just to see. If I had the wireless version of the weather station I have I could just add another sensor in the basement then I’d be recording it along with all the weather data I’m already recording. Darn darn darn.

-- -Curt, Milwaukee, WI

View David Freed's profile

David Freed

106 posts in 3087 days

#5 posted 03-30-2009 07:08 PM

Ditto what BlankMan said.

Fluctuating humidity is why you don’t want to put kiln dried lumber on sticks. You want to keep the lumber stable, not constantly gaining and losing moisture.

-- David, Southern Indiana

View Daren Nelson's profile

Daren Nelson

767 posts in 3325 days

#6 posted 03-30-2009 09:47 PM

Dead stack it. (no stickers)

View chrisncarrie's profile


52 posts in 2806 days

#7 posted 03-31-2009 05:08 AM

thanks everybody very useful info

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