flooring underlayment

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Forum topic by hockeydad2 posted 11-28-2011 05:00 PM 950 views 0 times favorited 6 replies Add to Favorites Watch
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1 post in 2397 days

11-28-2011 05:00 PM

Have been wondering about the moisture barrier for a basement wood floor. Recommendation is that a plastic vapor barrier be placed under the flooring. I am wondering if mylar space blankets wood work and if so would the radiant (reflective side go up toward the interior of the space or down toward the ground. Any comments?

6 replies so far

View Jeff's profile


439 posts in 3220 days

#1 posted 11-28-2011 05:15 PM

Probably get more answers, quicker by posting to the Home Refurbers site below.

View NBeener's profile


4816 posts in 3200 days

#2 posted 11-28-2011 05:40 PM

No expert, here, but … my gut tells me that … if it works … don’t fix it:

Meaning … there’s a low-cost, time-tested product type that’s “always” used in this application. I wouldn’t be in a hurry to get creative, on this one.

Good luck !

-- -- Neil

View Sawkerf's profile


1730 posts in 3094 days

#3 posted 11-28-2011 06:01 PM

Why would you want to use space blankets? They gotta be way more expensive than the plastic vapor barrier recommended by the flooring manufacturer.

-- Adversity doesn't build reveals it.

View a1Jim's profile


117120 posts in 3603 days

#4 posted 11-28-2011 06:10 PM

All you need is 6mil vapor barrier(black plastic) on the ground beneath the floor. If you want to get really crazy you can use pressure treated Plywood, a giant overkill.

-- wood crafting & woodworking classes

View Grandpa's profile


3259 posts in 2701 days

#5 posted 11-28-2011 06:11 PM

I think he is wanted to reflect the heat back into the room with a space blanket. They are good …BUT…. at 11 feet the earth is a constant temperature meaning it does not fluctuate with the seasons. I don’t think you would gain much savings at that depth and I would have to assume you would be close to that depth with a basement floor.

View crank49's profile


4032 posts in 2997 days

#6 posted 11-29-2011 01:49 AM

Yes, but that constant temperature is ~55 degrees. If it’s 0 degrees outside you might find the 55 degree earth actually reduces your heat load. I don’t heat or cool my basement shop and it’s pretty comfy just from the heated or cooled space above.

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