80 year old insulation...


Old 11-26-08, 09:35 PM
Thread Starter
Join Date: Oct 2008
Location: NYC
Posts: 433
80 year old insulation...

I am doing work inside and outside my house.

Recently I had the roof redone and noticed insulation in the attic that looks like a 3-4 inch cotton bed, can this be and if it is what r factor would it be?

Should I replace it with a R-38 fiberglass insulation?
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Old 11-29-08, 03:41 PM
newidea1's Avatar
Join Date: Nov 2008
Location: Cape Girardeau, MO
Posts: 10
Could be cotton. R9 best case.
EERE Consumer's Guide: Natural Fiber Insulation Materials
Get a sample and see if it burns, ie not fire retardant treated.

Insulate, Insulate, Insulate, Insulate.
Plug holes, Plug holes, Plug holes, Plug holes.
Thats the ticket.

FYI Home Energy conservation DIY check list
1. Increase Insulation R24 wall and R50 ceiling and eliminate air infiltration.
2. Other home thermal performance improvements, windows, attic venting, window shading.
3. Home energy audit data collection using blower door and infrared measurements and inspection
4. heating, ventilation, air condition (HVAC) re-eneginnering to calculate new HVAC size.
5. Ground Source Heat Pumps (GSHP) with solar thermal assist. and/or
6. Active and passive Solar Thermal (ST) whole house heating,
7. Insulated Concrete Form (ICF) new home construction
Old 12-02-08, 11:45 AM
Join Date: Nov 2008
Posts: 1
Speaking of old insulation, my parents house is like 120 years old and hasn't been updated in this department. Well, their heating bill is absolutely outrageous. Thanks for the tips. I'll forward it over to them.

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