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Old 01-11-2017, 10:22 AM  
Snoonyb
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All of the potential shortcoming in wood framing in a basement, are not found in steel, and why I use it.

I also warranty my work for the length of time the original person contracted with occupies the dwelling.


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Old 01-11-2017, 10:26 AM  
jjohnston
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My plan was all treated wood on the basement floor with a sill gasket under it. Do I need treated if I am doing a sill gasket?

Also, I have one wall that has 4 2x6 studs holding up my load bearing header or whatever its called. when I figure my 2x4 wall with a 2" insulation behind it that is only 5.5". is 1/2" ok to drywall around, or am I better off trying to pull the whole wall forward 1/2 inch? and if I pull the whole wall out 1/2 inch, do I need to add another 1/2" sheet of insulation behind the wall because of a fire block or anything like that? Just trying to figure out the best way to frame around that support. I don't know if drywall can be screwed to that type of thing or not since its structural.


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Old 01-11-2017, 12:17 PM  
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Originally Posted by KULTULZ View Post
GOTCHA!

Felt will break down over time allowing wicking and sill gasket provides a moisture barrier (I guess it does as it is also used on sill plates) in addition to a thermal barrier. I was overbuilding...

But, isn't felt called for by code under a floor plate (on crete)?
That what we did But Gary just pointed out the code change so now it is gasket
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Old 01-11-2017, 12:23 PM  
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My plan was all treated wood on the basement floor with a sill gasket under it. Do I need treated if I am doing a sill gasket?

Also, I have one wall that has 4 2x6 studs holding up my load bearing header or whatever its called. when I figure my 2x4 wall with a 2" insulation behind it that is only 5.5". is 1/2" ok to drywall around, or am I better off trying to pull the whole wall forward 1/2 inch? and if I pull the whole wall out 1/2 inch, do I need to add another 1/2" sheet of insulation behind the wall because of a fire block or anything like that? Just trying to figure out the best way to frame around that support. I don't know if drywall can be screwed to that type of thing or not since its structural.
Treated on the bottom may be code in some places and against code in others.

So best you check. The post holding up a beam is called a point load. And I would just adjust the wall to match for a 1/2", as long as it doesn't screw the lay out somewhere else
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Old 01-11-2017, 12:26 PM  
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OK, so if I pull that wall forward can I have a 1/2 inch air gap behind? I can check with the inspector too and see, but I wanted to make sure it wouldn't be against fire code or something weird.
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Old 01-11-2017, 12:35 PM  
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You want to build your wall with a gap there anyway in case it is not perfectly straight. the fire stop is the drywall at the ceiling.
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Old 01-11-2017, 12:38 PM  
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You want to build your wall with a gap there anyway in case it is not perfectly straight. the fire stop is the drywall at the ceiling.
OH, Thanks!! I would have just slammed it right against the insulation!! I am checking with the inspector, but I may step down to 1" R-5 rigid insulation tuck taped and glued to the walls, then leave 1/2" gap behind, except that one wall, that one i'll make flush with the point load.

the builder installed R-10 rigid insulation on the outside of the block, so if I do R-5 on the inside, I believe that will give me my R-15 requirement. then if i want I can add Roxul to add more if I want... not sure if that would be over kill or not. I estimate it would cost me $900 for enough Roxul...
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Old 01-11-2017, 12:56 PM  
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I would choose between fiber glass and safe and sound by price only.
If your foam passes code and you think you may more consider just the top half. or just to the depth of the frost level in the area. For many years here that is all we had to insulate and basements were comfortable.
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Old 01-11-2017, 01:46 PM  
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Ok, I thought maybe the Roxul due to moisture, but then I guess that is what my rigid is for, that is my moisture barrier, so I shouldn't need to worry about moisture in relation to in wall fiberglass right?

Fiberglass insulation is about half the price.
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Old 01-11-2017, 02:04 PM  
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Wet insulation is no insulation but when it gets wet you can take fiber glass out and let it dry and re use it. And somewhere there is chart on sound and I think fiber glass is actually better.


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