Faced Batt Insulation Question - Wall Already Up...

WhiteHotAfterburner · Post by **WhiteHotAfterburner** » Sat May 22, 2021 8:27 pm

You Construction Trade folks...

I meant to put some of the Batt Insulation in the Tall Wall before I put the Poly up.

It is Faced insulation.

Can I put the faced side towards the Poly (towards the room being environmentally controlled) and use Wire Stays to support it, without stapling it in place?

Some of the things I"m moving to make space for the Cubed Closet is rolls of batt insulation. I could move it back to the attic or towards the tall wall. Two different directions and I hope to never have to move it again except to install it.

Thanks in advance!

,
WHAB

rSin · Post by **rSin** » Sun May 23, 2021 6:13 am

having a bit of trouble understanding your questions, but
you can do about anything with insulation

WhiteHotAfterburner · Post by **WhiteHotAfterburner** » Sun May 23, 2021 1:01 pm

rSin wrote:having a bit of trouble understanding your questions, but
you can do about anything with insulation

Hello friend!

Typically, the "faced" side (the paper side on a roll of insulation) goes towards the conditioned space, the space being heated or cooled. At this point I can't install the faced batt insulation from the conditioned side.

I 'think' I can put the batt insulation in from the exposed side with the faced side towards the room and and use wire stays to hold it in place, I think.

,
WHAB

Butcher Bob · Post by **Butcher Bob** » Sun May 23, 2021 1:27 pm

WhiteHotAfterburner wrote:Can I put the faced side towards the Poly...

It is not advised...use unfaced insulation instead. Putting two vapor barriers back to back could cause mold issues if moisture got in between them. No need for the craft facing, because the poly is your vapor barrier.

WhiteHotAfterburner · Post by **WhiteHotAfterburner** » Sun May 23, 2021 1:56 pm

Butcher Bob wrote:
WhiteHotAfterburner wrote:Can I put the faced side towards the Poly...
It is not advised...use unfaced insulation instead. Putting two vapor barriers back to back could cause mold issues if moisture got in between them. No need for the craft facing, because the poly is your vapor barrier.

What you say makes sense, friend! But, I have rolls and rolls of faced insulation here.

I guess I'll have to hold off on insulating until I can buy some non-faced insulation.

Thanks, brother!

,
WHAB

Butcher Bob · Post by **Butcher Bob** » Sun May 23, 2021 3:47 pm

Or, use a square, on a flat surface, to scrape the pink off the paper. I've done this before...works decent. Just have to take care not to leave much insulation on the paper. Wrinkles in the facing are the toughest part.

BOSTONBUD · Post by **BOSTONBUD** » Sun May 23, 2021 5:39 pm

You COULD slice the poly horizontally at the top and at the bottom. Effectively rendering the poly “breathable “. Then place the faced insulation in the void. The faced side has the additional paper where the staples hold it to the 2x4. This can be bent to underlap to the inside of the 2x4 and stapled from the exposed side. Hope that makes sense. I have found wire stays work well holding things horizontally but vertically long term I believe the insulation would sag/drop in the cavity.

rSin · Post by **rSin** » Sun May 23, 2021 8:02 pm

the gig im working now were filling the wall voids with insulation
and cutting the stuff lengthwise is an uber bitch

we staple it best we can but

its a crafty nuisance

WhiteHotAfterburner · Post by **WhiteHotAfterburner** » Sun May 23, 2021 8:31 pm

Butcher Bob wrote:Or, use a square, on a flat surface, to scrape the pink off the paper. I've done this before...works decent. Just have to take care not to leave much insulation on the paper. Wrinkles in the facing are the toughest part.

That's an interesting concept! IF It comes to that that's what I'll do.

Thank you, sir!

,
WHAB

mistergrafik · Post by **mistergrafik** » Sun May 23, 2021 8:35 pm

I did a quick google 4 u

"Unfaced means the insulation lacks a vapor retarder (paper or plastic facing). Kraft-faced insulation includes a paper vapor retarder, which helps prevent mold and mildew.

Kraft-faced insulation should be installed in exterior walls, exterior basement walls, and attic ceilings by pressing the product into the wall cavity with the paper side facing outward, towards the installer. The insulation should be snug in the cavity, but not compressed. If the product needs additional support, consider using a staple gun to hold the insulation in place."

Sounds like you don't have 2 use it but you want to..