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Old 09-21-2009, 08:00 PM   #1
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Attic project


I plan on making the attic into a living space. Is it necessary to replace attic insulation?

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Old 09-21-2009, 08:02 PM   #2
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Attic project


Replace what insulation?
In the floor, rafters?
What R value is installed?
Where are you located?

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Old 09-21-2009, 08:05 PM   #3
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Attic project


There is about 6 inches of insulation in the rafters. I don't know the R rating. I do know that it was put in about 25 years ago.
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Old 09-21-2009, 09:34 PM   #4
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Attic project


That would be the least of my worries. You need: legal access stairway; proper sized floor joists; proper thickness rafters for required insulation; new lighting circuit; new heating there; required egress if a bedroom; required light and ventilation (window); required headroom; a permit from the local Building Department to ensure it all doesn't just fall down.
Be safe, Gary
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Old 09-21-2009, 09:49 PM   #5
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Attic project


6" of fiberglass? That is only R19 usually
Where are you located? That decides how much is required
I have R38 in most of my ceiling
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Old 09-22-2009, 01:10 AM   #6
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R19 would be consistent to areas like Florida or Texas.
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Old 09-22-2009, 06:08 AM   #7
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Attic project


Thanks Gary-yes we have all of that. I just thought the insulation was dirty looking. I quess since the ceiling will cover it I don't have to worry. I am in Baltimore.
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Old 09-22-2009, 07:17 AM   #8
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With only R19 up there your heating costs will be higher
When getting a building permit here we are required to have an "energy audit" performed on the insulation that will be used
You may not pass that audit if required
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Old 09-22-2009, 01:24 PM   #9
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Dirty looking --- if glass batt- just on the top, from dirt and dust, or inside it from air leaks in the ceiling below. A sure sign you need to plug all holes with fire-stopping foam- around pipes, light fixture boxes, wires holes, chimney, bath fan, etc. to keep the conditioned air in the house, not the attic-leading to ice dams and mold. Make sure to be 3" away from can lights not rated IC. (insulation cover)
Be safe, Gary
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Old 09-22-2009, 07:16 PM   #10
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Having an energy audit is a good idea. We decided the contractor will replace the insulation.
Thanks so much

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