High Density Cellulose Insulation R Value

0 2 to 1 0 l s m 2 at 75 p.

High density cellulose insulation r value.

Insulation or other building material 9. Insulation r values vary based on the type thickness and density of the insulation material. The r value of wet spray and dense pack cellulose insulation depends slightly on its installed density and the exact type of cellulose used but commonly ranges between 3 6 and 3 8 per inch 1 as measured by the standard astm c518 test. This does not just happen with cellulose.

I think i mentioned this earlier. Cellulose insulation is used as a filler material to fill various cavities and spaces but cellulose insulation boards and mats are also produced. Has less of an advantage in tighter dwellings. It also can happen with fiberglass.

And while the low density fiberglass insulation used in attics rates a much lower r 2 0 per inch there is typically very little space restriction in attics. High r values and reduces leakiness significantly. Typically a higher insulation r rating means better climate control and better energy efficiency for your home. High density batts for a 2 by 6 inch 51 by 152 mm frame wall offer r 21 and high density batts for an 8 5 inch 216 mm spaces yield about an r 30 value.

Thanks to thanks to andrew cole for correcting our data on this product. Cellulose insulation provides greater resistance to air leakage and for me this is a biggie. R 38 batts for 12 inch 304 mm spaces are also available. Has the greatest advantage in houses with leaky walls especially walls where one cavity is connected to the next plaster and lathe.

However it is seldom used in canada despite its reasonable cost and efficiency. A higher insulation r value usually means a higher price point as well. Aging effects comments. The r value per inch decreases slightly as density is increased from 3 0 to 4 0 lbs ft3.

Polyisocyanurate polyurethane foam insulation r values. Dense pack cellulose insulation. Typical thermal conductivity values for cellulose insulation are between 40 and 50 mw mk. The thermal conductivity of cellulose insulation varies with temperature moisture content and mass density.

So you can simply pile fiberglass deeper to achieve the r value you need. Polyurethane spray closed cell foam insulation. When cellulose is densely blown 3 0lbs ft3 or 48kg m3 or greater it is an excellent wall cavity insulation that provides a good r value at a reasonable cost. 5 this is unbelievably impressive.