MIXING ROXUL WOOL WITH FIBERGLASS

[gasbie]

Hello,
I am wondering if I can mix roxul wool with fiberglass. My ceiling is kinda deep and it will cost me more money to cover it will roxul wool. So, I was wonder if I can first lay a r13 in in the fill it up with roxul wool. Will this be efficient?

 

[fresno51]

I have fiberglass and roxul-like wool all together. All are the same as I see. Buy cheaper.

 

[apostolakisl]

Just as long as you don't have vapor barriers in the middle it is fine.

 

[fresno51]

Just as long as you don't have vapor barriers in the middle it is fine.

I have vapor barrier in front of it.

 

[fcwilt]

I wouldn't have either in my home.

 

[fresno51]

I wouldn't have either in my home.

Why not?

 

[ddennerline]

I just purchased (special order) six bails of Roxul ComfortBatte from big home center store. I have removed the old foil backed fiberglass insulation because it was R-10 and showing signs of water vapor contamination. Although, I don’t believe it had progressed to mold. I am going to install ComfortBatte insulation for one entire outside wall.

Roxul is definitely more money. Each bail is 59.7 sq/ft and ~$38. This works around to around .63c sq/ft verses .30c for fiberglass batts.

• Efficiency will not diminish with heavy water vapor/humidity. While removing the old fiberglass insulation, I did notice that everywhere there was dark stains, the insulation was thinner or was slightly compacted.
• R-15 for 2x4 framing
• Fireproof
• Less intrusive when installing product
• Less intrusive when installing product
• Sound abatement (I didn’t say sound proof).

Depending on the ceiling you are talking about, some of these benefits may be reduced. In my attic I have a mixture of blow fiberglass and cellose that I am currently looking to have removed. Every time I go into the attic even for a small inspection, I come out coughing and throat is sore for day. I am thinking about replacing with Roxul.