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Forum topic by Clint Searl posted 09-19-2012 01:38 AM 579 views 0 times favorited 4 replies Add to Favorites Watch
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Clint Searl

1479 posts in 1112 days


09-19-2012 01:38 AM

I’m going to lay a 3/4×5 T&G Heart Pine floor on a radiant slab, and want to glue it directly rather than over an underlayment and/or floating. The slab is dry as a bone and the ambient humidity never exceeds 35% (NM). I would appreciate hearing about any similar experience. TIA

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been


4 replies so far

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IsaacH

128 posts in 848 days


#1 posted 09-19-2012 01:55 AM

I glued down a bamboo when I moved into my house 2 years ago. I learned alot about slab moisture due to bamboos reaction to any humidity. What I learned is its not the ambient humidity but rather humidity coming from the ground underneathe the slab. Im assuming it dose rain atleast occasionally in NM. Its hard to get a slab perfectly moisture proofed. Water from the ground around the slab can migrate under the slabs edges. I had to use a special urethane based glue that created a waterproofing layer. It was kind of pricey and very stiff to spread. I had a hard time walking the next day after gluing 500 sqft.

-- Isaac- Decatur, GA - "Your woodworking....NOT machining parts for NASA!!!"

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Clint Searl

1479 posts in 1112 days


#2 posted 09-19-2012 02:29 AM

Isaac, thanks for the info. I’m sure the slab won’t be wicking any moisture, and I plan to use a urethane adhesive. My main concern is if there are any issues associated with gluing it to a radiant floor.

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

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Moron

4724 posts in 2644 days


#3 posted 09-19-2012 02:45 AM

depends on how the floor is done

if the tubing is buried in a concrete slab then I would not recommend using solid flooring period. Most use an engineered flooring as it wont buckle and warp.

Thats a no no in my books

-- "Good artists borrow, great artists steal”…..Picasso

View Clint Searl's profile

Clint Searl

1479 posts in 1112 days


#4 posted 09-20-2012 01:38 PM

Moron, the previous owner installed the same pine flooring in another room at least five years ago, and the radiant heat in the slab has not been an issue. The boards have not buckled, cupped, or warped. I don’t know if it’s glued or floating.

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

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