| R-Value | Thickness | Bags / 1000 Sq Ft |
|---|---|---|
| R49 | 16.25” | 22.6 |
| R44 | 14.75” | 20.1 |
| R38 | 12.75” | 16.8 |
| R30 | 10.25” | 13.0 |
How thick is R38 insulation?
Easy to handle and pre-fabricated batts with a thickness or depth of 11.25″ will be needed to attain an R-value of R38. It is used in floors of crawlspaces and attics, supplying water-resistant insulation with no forming of mildew, fungi, or mold.13-Jan-2022
How thick is an R38 batt?
10¼ ”10¼ ” thick, R-38C EcoTouch® Thermal Batt insulation prevents moisture damage and help assure long roof life by providing 1" of ventilation air space between the insulation and roof deck.
What is the R-value of 4 inches of blown insulation?
Blown-in fiberglass has an R-value of 2.2 to 2.7 per inch.21-Nov-2017
Is R38 attic insulation enough?
Every home builder in our area must insulate the attic to a minimum of R-38. ... And more insulation generally means your home will be more comfortable, more energy efficient, with a higher resale value.06-Jul-2021
How wide is R38 insulation?
24 in. x 48 inx 48 in.
How many square feet is a roll of R38 insulation?
R-38 EcoBatt® Kraft Faced Fiberglass Insulation Batt 24" x 48" 64 SF at Menards®
Is R38 insulation good?
In many colder areas of the US, R 18 is the recommended insulation for walls (its a 2x6 wall stuffed with standard fiberglass insulation), R 38 (14 inches of fiberglass) is recommended for ceilings/attics.
How thick should blown attic insulation be?
When blown into attics and wall spaces, loose-fill fiberglass offers an average R-2.5 thermal value per inch (the higher the number, the greater the insulating effect). You'd need a thickness of about 7.5 inches of insulation to match the insulating value of a batt of R-19 insulation (R-19 is a common batt value).05-Oct-2020
What is the difference between R38 and R49 insulation?
A ceiling with an R-value of 38 lets through only 1/38 of the amount of energy per square foot that passes through that window, or about 2.6% of the energy; a ceiling with an R-value of 49 lets through only 1/49 of the amount of energy per square foot that passes through that window, or about 2.0 % of the energy.
How much does R38 insulation cost?
According to the U.S. Department of Energy, R-19 insulation costs up to $0.34 per square foot. A higher R-value of R-38 costs up to $0.60 per square foot....Batt Insulation Pricing.R-valueThickness in inchesPrice range per square footR-3812$0.55-$0.604 more rows
Can you put too much insulation in your attic?
It's possible to over-insulate an attic as too much will cause moisture buildup and eventually result in mold. Eventually, adding more insulation leads to diminishing returns in trapping heat as well.11-Dec-2020
How many inches of blown insulation do I need?
The higher the R-Value, the better the thermal performance of the insulation. The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.