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Old 02-16-2011, 02:44 PM   #1
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24 or 16 inch spacing


Hi,

I will be building some perimeter walls in the basement, so they are not load-bearing. However, I want to use 2x6 because I will be insulating with batt and want to get the R22 value.

Since 2x6 are expensive, I am thinking of going to 24 inch spacing. I will be using 1/2 inch drywall.

I have heard that 24 inch centres can produce a wavy look in the drywall. I suppose I could add some cross pieces.

Opinions ?

thanks.

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Old 02-16-2011, 06:13 PM   #2
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24 or 16 inch spacing


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Originally Posted by Mike Mike View Post
Hi,

I will be building some perimeter walls in the basement, so they are not load-bearing. However, I want to use 2x6 because I will be insulating with batt and want to get the R22 value.

Since 2x6 are expensive, I am thinking of going to 24 inch spacing. I will be using 1/2 inch drywall.

I have heard that 24 inch centres can produce a wavy look in the drywall. I suppose I could add some cross pieces.

Opinions ?

thanks.
5/8 drywall

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Old 02-16-2011, 06:43 PM   #3
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24 or 16 inch spacing


5/8" drywall. It doesn't cost that much more.
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Old 02-16-2011, 07:11 PM   #4
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24 or 16 inch spacing


Studs aren't that expensive. Would 5/8 sheetrock be any cheaper than adding a couple studs?

Make sure you crown your studs and before the sheetrock goes on check for bows by putting a long level or straight edge across the wall to see if the any studs stick out farther than the others. To fix them you can use a planer and plane down studs that are sticking out or use butt-strips to fur out studs that are bowed in.

I've always heard them called butt-strips. I don't know if there is a different name for them. They are strips of cardboard commonly used by sheetrock hangers.
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Old 02-16-2011, 11:14 PM   #5
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24 or 16 inch spacing


Many people don't realize drywall has a machine "grain" to it, making it 3 times stronger in flexural strength when installed with studs perpendicular to it's long side rather than up and down on a side wall.
Notice the effective stiffness of 1/2" vs. 5/8" in the second chart; http://docs.google.com/viewer?a=v&q=...U1o3kfoOlKl-7Q

Use a sill sealer under the p.t. bottom plate for a thermal and capillary break. Foam board on concrete, no air space, f.b. the rim joists and air seal, use ADA on drywall.

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Old 02-16-2011, 11:51 PM   #6
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24 or 16 inch spacing


It is up to you. I have no problem with 24 centers and 1\2 drywall. I feel you get more R value in your wall with 24 centers (less wood more insulation). I think people who use 5/8 on the wall are nuts and the people who use 5/8 on the wall think I am nuts for using 1/2"
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Old 02-17-2011, 12:14 AM   #7
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24 or 16 inch spacing


Use 2x4 and hold 2" off the wall. Either spacing is fine for 1/2" drywall. 2X4 walls with r-23 batts is going to be better than 2x6 with 23 the batts will touch behind the studs and break the thermal bond.
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Old 02-20-2011, 04:25 PM   #8
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24 or 16 inch spacing


Age-old dilemma, no clear answer. When in doubt, overkill w/ 5/8". Or, accept possible waves as adding an aesthetic, oceanic parameter to the home.

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