# R38 Batt Insulation Thickness

**Let s look at an r 19 batt in a 2x6 cavity step 1.**

**R38 batt insulation thickness**.
To achieve r 38 you can use two layers of.
This is a significant difference and thus why r 49 batt insulation is used typically in colder climates.
6 25 batt 5 5 cavity depth 0 75.

An r 38 fiberglass batt should be approximately 12 inches thick while the thickness of cellulose insulation of a finished fitted product will larger. Uses the owens corning paperfaced r38 is a flexible fiberglass insulation proposed to control moisture in concealed applications in between the studs and joists. However it is available in pre cut lengths for easy and quick.

Johns manville kraft faced formaldehyde free fiber glass insulation is paper faced to help control moisture in concealed applications such as exterior. Subtract the cavity depth from the thickness of the batt in inches. Product length ft 25 ft.

Note that r30 batt insulation thickness is just 9 1 2 inches thick where as r 49 batt insulation thickness is 15 1 2 inches. An r 38 fiberglass batt should be approximately 12 inches thick while the thickness of cellulose insulation of a finished fitted product will larger. The insulation material is compressed the r value decreases by approximately one half of that percentage or x compressed.

The thickness of your r 38 insulation will depend on the material you have the brand and how it s installed. R 38 fiberglass batt insulation is approximately 6 1 4 inches thick but loose cellulose requires over 12 inches of material to provide the same resistance value. And for those asking how thick is r38 insulation it is 12 inches thick.

12 r 38 ecotouch insulation batts standard batts compressed into a 11 cavity with ventilation baffl e added to allow 1 air space deliver approximately r 35. Thickness of r 38 insulation. Product thickness in 9 in.