Home Attic Insulation Recommendations

Existing 3 4 inches of insulation.

Home attic insulation recommendations.

Recommended insulation levels for retrofitting existing wood framed buildings. The higher the r value the better the thermal performance of the insulation. Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. Plan to pull up the flooring and layer new insulation on top of the old.

If your insulation doesn t measure up and you need more installation can be done as a weekend diy project or you can call a professional installer to handle the job. Of attic space above the ground floor with no insulation and problematic access. We are interested in the new owens corning pure safety insulation if you install it. 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.

Recommended attic insulation in california here in southern california and any other hot climate it s usually recommended to install both a radiant barrier and blown in fiberglass or cellulose in the attic in cooler climates it can. Because the simplest and cheapest way to insulate an attic is to add material to the floor. Well your attic has a dramatic impact on the temperature throughout the rest of your home as well. The best type of insulation for the attic and other areas of your home mainly depends on where you live.

Second story addition with 40 year old r 19 insulation in the attic that could be replaced or added to. Achieving greater r values in exterior walls in exterior walls add insulating sheathing to achieve a greater r value in your wall system. In general an attic s r value should be between r 30 and r 49. You can achieve better thermal performance in your attic by adding an additional layer of insulation.

Why attic insulation r value matters for california homeowners at this point you may be wondering why this r value matters so much especially when it s for an attic that you probably go into once a year to fetch your christmas decorations. While federal and in some cases state guidelines for insulation levels are merely recommendations the local building code is the true authority over insulation requirements. In particularly cold climates you might go up to. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.

We are also hopeful of being able to take advantage of. 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. We have a 700 sq.