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Old 06-20-2016, 04:42 PM   #16
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Re: crawlspace insuation


Well, from their web site: http://www.rmax.com/files/2114/5401/...x_TSX-8500.pdf

They are showing it installed without an additional thermal barrier and they are claiming an excellent fire protection performance.

I like it, but only your local code authority can say for sure.

Bud
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Old 06-20-2016, 05:10 PM   #17
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Re: crawlspace insuation


Ok so as a final confirmation to everything:

1. Insulate the rim joists with Roxul or foam board(unfaced or foil faced?).

2. Only need foam board on the 2 outside walls, the foam board(thermax or rmax, will check with local authority) going up all the way up to 3 inch from the top of the wall, so that there is a termite inspection area.

3. Use a 10-20 mil Poly run up 12 in above ground.

4. Seal the vents with foam board.

5. Use some plywood to cover half of that opening between basement and crawlspace.

6. No holes needed in the ducts.


Thanks again!!
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Old 06-20-2016, 05:27 PM   #18
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Re: crawlspace insuation


1. Insulate the rim joists with Roxul or foam board(unfaced or foil faced?). Either
6. No holes needed in the ducts. For now

Bud

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Old 06-20-2016, 05:49 PM   #19
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Re: crawlspace insuation


Quote:
Originally Posted by Bud9051 View Post
1. Insulate the rim joists with Roxul or foam board(unfaced or foil faced?). Either
6. No holes needed in the ducts. For now

Bud

Hey Bud, what do u mean for now? When would this change? Thanks!
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Old 06-20-2016, 06:55 PM   #20
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Re: crawlspace insuation


Hopefully there will be enough natural air circulation, but if not or it stays too cool, then you might want to introduce some conditioned air.

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Old 06-24-2016, 11:24 PM   #21
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Re: crawlspace insuation


If you read that link I gave, you get a slight energy penalty leaving the floor batts in place when insulating the walls. Pull the Fg and add to attic. Using rock wool on the rims without drywall for an air barrier could be risky. IMHO.

Running the AC (even in your mild climate) will bring in summertime moisture with the warm outside air through the rim framing cracks, and condense warm moist interior air on the cold rims in winter-- seal them with caulking first, then use foil-faced foam board; #10, here; http://www.diychatroom.com/f103/insu...-roxul-307313/

Gary
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