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-   -   what R-value do i have here ? (http://www.diychatroom.com/f103/what-r-value-do-i-have-here-141064/)

Fix'n it 04-22-2012 09:04 AM

what R-value do i have here ?
 
1 Attachment(s)
this is what i have in my attic. just wondering, as it is going to either be replaced and/or covered with blow in. oh, those are 2x4's .

sublime2 04-22-2012 10:00 AM

Quote:

Originally Posted by Fix'n it
this is what i have in my attic. just wondering, as it is going to either be replaced and/or covered with blow in. oh, those are 2x4's .

If that K&T is in use I don't think it can be covered with any insulation.

Fix'n it 04-22-2012 10:08 AM

that is going to be replaced.

Fix'n it 04-22-2012 10:12 AM

oh, and, as you can see, it was covered by insulation. not saying that that is correct, but it was covered.

as to the original question. i think its about R-6, if that. and i bet that same garbage is in my walls.

joecaption 04-22-2012 11:52 AM

What you have is less then 1/3 of what was needed and it's upside down.
The paper was suppost to be toward the heated surface.
http://www.energystar.gov/index.cfm?...sulation_table

2X4 joist with plaster ceilings, Hmm. A sure way to have cracks everywhere.

Your going to have to make sure there's soffit vents, a ridge vent, baffles to keep the insulation away from the soffits and allow air flow.

Windows on Wash 04-22-2012 12:06 PM

+1

Get the K&T out as you are.

You have about an R-6 to R-9 up there at absolute best.

Get out the K&T, air seal, blow in an R-50 and you will be so...so...so far ahead it won't even be comparable.

Fix'n it 04-22-2012 12:13 PM

Quote:

Originally Posted by joecaption (Post 904608)
What you have is less then 1/3 of what was needed and it's upside down.
The paper was suppost to be toward the heated surface.
http://www.energystar.gov/index.cfm?...sulation_table

2X4 joist with plaster ceilings, Hmm. A sure way to have cracks everywhere.

Your going to have to make sure there's soffit vents, a ridge vent, baffles to keep the insulation away from the soffits and allow air flow.

there is paper, or whatever it is, on both sides.

there are not many cracks at all. of course it is always possible, and probably probable, that they were repaired in the past. idk

no ridge vent. there are 4 of the cheapo vents on the roof. and there are no soffit vents. though there is air leakage in those areas = i can see light leaking in. i would like to install some. but, i don't think this old house would make it easy on me. i do have a dormer on the front of the house. i was thinking about putting a slat vent in where there are windows now.
there are houses like mine that have it this way.

Fix'n it 04-22-2012 12:22 PM

Quote:

Originally Posted by Windows on Wash (Post 904624)
+1

Get the K&T out as you are.

You have about an R-6 to R-9 up there at absolute best.

Get out the K&T, air seal, blow in an R-50 and you will be so...so...so far ahead it won't even be comparable.

how thick would R-50 cellulose be ?

not only am i going to do those things. also new windows, and i am going to rip down the P&L on the outside walls and put new electrical and insulation in there.

Windows on Wash 04-22-2012 01:33 PM

About 14".

jklingel 04-23-2012 12:06 AM

14.07".....:laughing:

Windows on Wash 04-23-2012 07:16 AM

Quote:

Originally Posted by jklingel (Post 905185)
14.07".....:laughing:

Well...you have about the effective R-Value of R-0.07 right now so this is certainly a step in the right direction.

:thumbup:


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