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Old 05-30-2007, 08:53 PM   #16
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vapor barrier over concrete floor


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Originally Posted by send_it_all View Post
I believe there are roll on vapor barrier products that you can use on concrete and then use glue down flooring on top of that. At least I hope there are because I have a customer who had that done (not through me) not long ago.....hope it lasts. I was also told that there is glue for glueing down flooring that has vapor barrier in it.
Yes, you can do that if you're content with a floating floor. If you're nailing with a hammer though, it will be very labor intensive to predrill and then nail. Also, the floor planks hold better and tighter if the nails are coming in at 45 deg vice 90 deg.

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Old 05-30-2007, 09:40 PM   #17
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vapor barrier over concrete floor


FWIW - Additional info on this installation question:

http://www.hardwoodinfo.com/display_article.asp?ID=300

http://www.primatech.ca/tn/tips2.htm

http://www.woodweb.com/knowledge_bas...od_Floors.html
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Old 05-30-2007, 10:03 PM   #18
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vapor barrier over concrete floor


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Yes, you can do that if you're content with a floating floor. If you're nailing with a hammer though, it will be very labor intensive to predrill and then nail. Also, the floor planks hold better and tighter if the nails are coming in at 45 deg vice 90 deg.
The flooring I am talking about is glued to the concrete....which has been treated with a painted-on vapor barrier.
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Old 05-31-2007, 01:16 AM   #19
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vapor barrier over concrete floor


I think the stuff you are talking about might be a polyurethane adhesive. I read about them, Bostik makes some of them. But they are quite expensive, and I think since I live in Southern California with very little rain maybe I can go with the polyethylene vapor barrier and nail the plywood on top of it into the concrete with one of these power nailers. The links that AtlanticWBConst. sent are very helpful with this process (even though nobody talks about the holes you punch into the polyethylene sheet when you nail through it). Then I'll lay down the 15 pd asphalt felt and then the T&G. And I was thinking of renting a floor nailer machine to make the work easier and to ensure the nails go in at the proper angle. Does that sound good? It's going to be a lot of work, I know. The more I learn, the more complicated it seems to get, but I guess I can't avoid it. Again, thanks to everyone for the great help.
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Old 05-31-2007, 01:27 AM   #20
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vapor barrier over concrete floor


Im in So. Cal also...Huntington Beach....where are you?
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Old 05-31-2007, 01:46 AM   #21
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vapor barrier over concrete floor


I'm in the San Fernando Valley. "Valley Glen", they call it now, although it's just Van Nuys, but it sounds better. Night, night now.
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Old 05-31-2007, 08:15 AM   #22
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vapor barrier over concrete floor


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I think the stuff you are talking about might be a polyurethane adhesive. I read about them, Bostik makes some of them. But they are quite expensive, and I think since I live in Southern California with very little rain maybe I can go with the polyethylene vapor barrier and nail the plywood on top of it into the concrete with one of these power nailers. The links that AtlanticWBConst. sent are very helpful with this process (even though nobody talks about the holes you punch into the polyethylene sheet when you nail through it). Then I'll lay down the 15 pd asphalt felt and then the T&G. And I was thinking of renting a floor nailer machine to make the work easier and to ensure the nails go in at the proper angle. Does that sound good? It's going to be a lot of work, I know. The more I learn, the more complicated it seems to get, but I guess I can't avoid it. Again, thanks to everyone for the great help.
Renting a nailer is fine, but you'll be on the clock and pressure will be on to get it done otherwise, the amount of time/cost you spend, you might be able to buy a used nailer on ebay.

Driving nails at 90 degrees won't work. Not only does it not hold the planks in tight, but you will obstruct the tongue and groove from seating properly.
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Old 05-31-2007, 09:41 AM   #23
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vapor barrier over concrete floor


Good idea, Handy man! Thanks for the tip. And I am definitely aware of the 45 degree angle.

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