Thickness must not be used as the sole factor in determining the r value of loose fill insulation particularly for attic insulation.
Not enough insulation in attic.
The recommended level for most attics.
Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof.
To find out if you have enough attic insulation measure the thickness of the insulation.
The higher the r value the better the thermal performance of the insulation.
Common signs of problems with insulation.
Stop using your attic for storage.
These specialty vents do not affect the.
See more on different types of insulation.
How do i know if i have enough insulation in my attic.
The structural elements are usually exposed in these areas which makes it.
When we inspect attics we immediately determine the height of the bottom chord or joist and then use them as a depth gauge as we scan the attics with our headlamps.
Likewise fiberglass which is ubiquitous shouldn t be used for the band joists in the basement or any other place where air sealing is required since fiberglass is does nothing to stop air movement.
If your attic insulation covers your joists and is distributed evenly you probably have enough.
Plan to pull up the flooring and layer new insulation on top of the old.
Loose fill or batt insulation is typically installed in an attic.
A quick way to see if you need more insulation is to look across your attic floor.
Without having a professional coming out to take a look at things it can be hard to tell if your attic is properly insulated.
Not sealing attic air leaks first no amount of insulation is going to help if you don t seal your attic properly says olson.
Inspecting and evaluating your insulation.
Because the simplest and cheapest way to insulate an attic is to add material to the floor.
There are four especially common signs of problems with attic insulation.
However there are a few easy things you can do to see if your attic is properly insulated.
Check the attic walls and floors adjacent to an unheated space like a garage or basement.
But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.
Not getting insulation out to the edges when you re prepping the attic use a broom handle or stick to push the existing insulation out to the edges.
Loose fill insulation is usually less expensive to install than batt insulation and provides better coverage when installed properly.
If your insulation level is at or below the top of the floor joists you probably need to add more insulation but remember to seal the air leaks before you insulate.
R value is a measure of insulation s ability to resist heat flow.
Insulation levels are specified by r value.