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Old 11-21-2011, 11:06 PM   #1
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


I bought a house near Seattle, constructed in the 1970s.

The insulation in the attic is a dark gray loose fill. Is this color ok?

Also, I measure, it's only about 5 inches deep, which ... but it is covering the floor joists.




Ugh seems really dirty and messy though. Is it worth it to clean my attic out of this gray loose insulation and replace it with neater pink Batt Insulation?

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Old 11-22-2011, 06:16 AM   #2
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


That's blown in cellulose ---perfectly fine insulation---I suggest you add more as 5" is not enough for r-38 ----

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Old 11-22-2011, 08:16 AM   #3
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


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That's blown in cellulose ---perfectly fine insulation---I suggest you add more as 5" is not enough for r-38 ----
+1

Not even close. You really should shoot for an R-50 at that.
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Old 11-22-2011, 06:07 PM   #4
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


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That's blown in cellulose ---perfectly fine insulation---I suggest you add more as 5" is not enough for r-38 ----
If I put another 5 inches, it'll be really high and might poor out of the attic entrance?

Is Batt better or worse insulation? I really like how it's so neat and not loose.
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Old 11-22-2011, 07:28 PM   #5
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


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If I put another 5 inches, it'll be really high and might poor out of the attic entrance?

Is Batt better or worse insulation? I really like how it's so neat and not loose.

Make a plywood collar if you want to---
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Old 11-22-2011, 11:08 PM   #6
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


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Make a plywood collar if you want to---
+1

Make a wall around the scuttle of plwood, cardboard, or rigid foam. Pretty much anything will work but the woods will be more structural if you are leaning on them much to get up there.
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Old 11-22-2011, 11:13 PM   #7
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


Or even 1 batt of r30 or 38
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Old 11-23-2011, 12:30 AM   #8
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Is dark gray attic insulation ok? Is it worth replacing with batt insulation?


A belated "Welcome to the forums!" to a neighbor just North of me.

WA State has it's own "Energy Code" -a little tougher than IRC. Page #55, here: http://www.energy.wsu.edu/Documents/...ers%201-10.pdf R-49 is minimum, the guys here are "right-on"!

Air seal by raking the existing out of the way, to reuse. http://www.google.com/url?sa=t&sourc...O842EQ&cad=rja

Gary

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