Use a tape measure to get the correct dimensions of the area that you need to cover and purchase a corresponding amount of insulation.
Do it yourself home attic insulation.
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Because the simplest and cheapest way to insulate an attic is to add material to the floor.
Insulation radiant and vapor barriers insulating attic.
Both have r values of approximately 3 4 per inch of thickness use 3 per inch as a good guesstimate for how much insulation is already present.
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.
If your attic insulation covers your joists and is distributed evenly you probably have enough.
Blowing the insulation should take less than 1 5 hours and the whole job can be completed in less than 4 hours based on a 1 000 sq.
It is important that the insulation be evenly distributed with no low spots.
Plan to pull up the flooring and layer new insulation on top of the old.
Adding insulation to your attic is a great weekend do it yourself project but not everyone wants to crawl up into the attic.
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How much insulation do you need.
You can do this by going up into your attic seeing what kind of insulation is there now and measuring how thick it is.
Sometimes there is enough insulation in the middle of the attic and very little along the eaves.
To see how to add insulation out to the eaves see installing rafter vents.
Contractors typically cost a bit more than doing it yourself but they can get the job done quickly safely and have the skills to find any hidden problems like mold or air leaks.
The most common types of attic insulation are fiberglass or rock wool batts and blown insulation usually cellulose fiber a paper product impregnated with fireproofing chemicals.
It makes adding insulation to your attic a breeze.
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Blown in insulation is installed using blowing machines.
The specially designed atticat machine conditions the insulation by adding millions of tiny air pockets that give the material its insulating power and energy saving r value over time.
You get a free blown in machine rental with your insulation purchase.