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High Rapid RH readings??

#41
Back on page 2, bottom post with images.

http://www.wagnermeters.com/concreteforum/Thread-High-Rapid-RH-readings?page=2
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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#42
(11-16-2011, 05:03 PM)Ernesto Wrote:  First, whats up with that outside wall on demento's pic's? LOL WTF?

Second, Bostik's newest 2&1 adhesives are rated 85% rh max.

If you want wood and you have any iffy readings from F-2170 testing, the keyword is "isolate" ...from the concrete.

I do wood over concrete all the time....yawn. RolleyesRolleyes


Yes ernesto, those are water heater pipes that supply the radiators. The plywood and hardwood floor will stop at that trench and the trench itself will be covered up by aluminium checker plate.

to rubenstg: my "floating" floor consists of a neoprene spacer with 2X 1/2" plywoods and 3/4" maple hardwood finished with a Cristal coat varnish.

My trade says installing a poly as a vapor barrier is useless because the humidity will escape from the sides and from that trench and get into his floor. I guess he has a point. Dodgy

As for some other vapor retarder, I had already proposed an epoxy that my trade had suggested, but that was refused by the client as being out of his budget.

And so we wait.....
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#43
Well, you can run the poly or Stego from wall to wall and let vapor vent into the walls I suppose.... How do they plan to address that trench? There's an unlimited vapor supply there, and then you have the temperature swing exasperating the problem. At least Stego would go over the trench.

JD Grafton
Concrete Answers for Flooring Problems
[email protected]
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#44
(11-17-2011, 06:16 AM)ddemento Wrote:  My trade says installing a poly as a vapor barrier is useless because the humidity will escape from the sides and from that trench and get into his floor.

That is why you use vented base.
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#45
I always thought I need vented base for my floating floors. It just don't make sense to wrap the plastic or 2 n 1 up the wall so it can do what? Seep into the sheetrock and walls? Who dreams up this stupid shyt? Dodgy
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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#46
Well, as a final post, I'd like to start off by thanking all of you for your time and help. It was great!

In summary, my trade decided to go ahead and install the floor against my recommendations. He believes his meter is correct although he acknowledges the humidity is a little on the high side and he took precautions because of this. On the day of install, my Rapid still was reading at 95%.
He installed a heavy poly taped and glued down at the seams over the concrete before installing the rest. Then proceeded with the floor which at this moment is almost complete, with game lines done, and final coats of varnish installed tomorrow.

All that is left after is to close up that darn trench with aluminum checker plate and this project is done. Its been a long process but now its over!

The floor looks great and I truly do pray that it stays that way for a very long time (for both our sakes). Confused

Once again thanks to all of you for your help and keep up the good work.
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#47
Send a picture dude.

Hey, were is this vented base to be had? Is there a residential vented base? I've thought of making kerfs on the back so a small opening is at the top of the base for moisture to travel out, not caulking the hole of course. I keep hearing about mold due to capped base with floating floor systems, moisture cannot escape and goes into walls.
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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#48
We wish you the best of luck with your floor ddemento, we never like to hear of failures. The poly will provide a good vapor retarder, hopefully it will last long enough to let you retire with a good floor yet!
Good luck and stop by anytime!! Wink
JD Grafton
Concrete Answers for Flooring Problems
[email protected]
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#49
(12-08-2011, 12:48 PM)Ernesto Wrote:  Send a picture dude.

Hey, were is this vented base to be had? Is there a residential vented base? I've thought of making kerfs on the back so a small opening is at the top of the base for moisture to travel out, not caulking the hole of course. I keep hearing about mold due to capped base with floating floor systems, moisture cannot escape and goes into walls.

Vented base in this situation is for a sports floor. 4" std in Black or Brown. There are a variety of companies that make it. I buy mine from my local Tarkett distributor. It is expensive, http://www.tools4flooring.com/johnsonite-vent-cove-wall-base-4-x-4-ft-length.html#.TuFca1bfVeU You should be able to get it for 50% off of the price they are selling it at. Don't forget outside corners and the additional labor of installing this stuff (which is a pain in the backside).

You are correct to not caulk. Also do not put adhesive into the vents. I have seen Architects test this with a new pencil or other device that can be put down through the vents.

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#50
Oh well that stuff would never fly in houses. Looks great in a basketball court though.
Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
Reply


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