Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
How to check home attic insulation.
Installing a vapor barrier.
Preparing an attic for insulation.
Then use the numbers in the chart at right to estimate its r value.
To install insulation batts and blankets.
Diy checks and inspections for further information and instructions on how to check your attic insulation wall insulation and air leaks.
Building codes typically require 1 square foot of venting space for every 150 square feet.
You will instantly know whether or not you have insulation.
Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live.
If your attic is not sufficiently vented you probably won t have to look very hard to find signs.
Grab a tape measure and a flashlight to see what kind of insulation you already have in the attic and how deep it is.
Pull out a small amount of insulation if needed to help determine the type of insulation.
How to insulate an unfinished attic.
Inspecting your attic insulation first things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
Attic insulation by contrast is usually fairly easy to check on.
Place planks 1 by 6 or 1 by 8 or plywood sheaths across floor joists to improve your mobility in the attic.
Once you ve done that take a walk around and check for rooms that seem significantly warmer or colder than other areas.
Make sure the vents are open too.
Read more below on how to conduct a quick check of insulation levels or visit what to look for.
To install loose fill insulation.
Simply find the attic access panel usually located in a closet or hallway set up a ladder and pop your head into the attic.
How to check attic ventilation calculate net free vent space.
You should be able to see if there is insulation in the wall.
Check outlets on all.
Inspect the vent openings.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Pull up and dispose of any material that s compressed water stained or moldy it s useless.
First off you ll need to open all of the inside doors for awhile and let the temperature of your home even out.
Courtesy of department of energy.