The easiest place to get a gauge on your home s current insulation condition is in the attic.
Coat to bring attic insulation up from 11 to r49.
Thus more insulation would have a very long payback time.
Les oct 24 12 at 14 10.
As noted above there are lots of higher r value per inch alternatives to fiberglass.
We want to bring it up to r49 but i have read that some suggest taking it to r60 to get more energy efficiency.
If you cannot see any of the floor joists because the insulation is well above them you probably have enough and adding more insulation may not be cost effective.
For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3.
In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended.
Attic hatch or door.
Where the irc 2009 recommendations for cold climate attic roof insulation have been adopted r49 is the minimum.
Affix rigid foam insulation to the attic side of the hatch or door.
When the temperature is 30 degrees i have frost on my roof.
If you don t have enough it may be an indication that your home is under insulated and may not be properly sealed.
I have about 6 inches of blown in insulation in my attic.
For loose fill cellulose this translates to a total depth ranging from 8 inches.
Looking across your attic if the insulation is level with or below the attic floor joists you probably need to add more insulation.
You need up to 19 inches or r 49 for efficiency.
If there s still not enough room you can always add a layer of foam board or closed cell spray foam to the top of the roof topped by sheathing or.
Since the experts think i should have at least twice this amount of insulation what am i missing.
Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
Pull down stair or ladder.
The attic is already air sealed as.
We have about 3 of old insulation in our attic.
That tells me my insulation is adequate.
Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.
Add insulation to attic.
Wall insulation whenever exterior siding is removed on an.
Existing 3 4 inches of insulation.