The fiberglass is exposed. This is a roll of typical fiberglass insulation. It is NOT pre-cut. YOU cut it to the size or the opening. There are other products available, cut to typical bay size, wrapped in plastic etc. You need to decide what's best for your insulation project.
Fiberglass insulation does not have a general R-value per inch for all products. Batts are designed at specific R-values and thicknesses which means the R-value per inch will be specific for each product design. This is how R-11, R-13, and R-15 are all 3.5” thick. We manufacture them specifically to provide the labeled R-value at the same thickness. Therefore, R-13 is not R-3 per inch
We'd need to know more about what type of hot air duct you are referring to and how hot the air in the duct gets. Unfaced insulation could be as option as well as foam boards may work for you. Can you provide additional info?
If you have 2X4 construction, you may use R13 or R15. If you have 2X6 construction, you may use R19 or R21. Don't forget to put insulation in the attic area and for that depending on your area height to insulation, you may use R30, R38 or R49. You have a 120 sq. ft. so look at the bag you are going to purchase and divide 120 by the sq. ft. per bag and that will tell you how many bags you will need. Round up to the nearest full bag. Good luck and enjoy your she shed!
We would like to further investigate the situation Contact firstname.lastname@example.org.
If your garage is 8’ high, one roll will fill 4 area between the studs. So how many stud bays do you have....? Two 18’ walls and a17’ wall will have 53’ of total wall length, divided by 1.3 (16”/12”) gives you 40.75, or 41 bays. So you might be able to do it with 10 rolls, but I would buy at least 11.
Thank you for your inquiry. Our Technical Support has been in contact with you directly to solve your issue. Please let us know if there is anything else we may assist you with.
If your rom is 8’ high, just take the total circumference of the room 36 (8+8+10+10) and divide by 1.33 (this is the 16” stud spacing in feet) and you get 27 spaces between the studs. A roll will fill 4 spaces so 27/4= 6.7, so you will need 7 rolls.
Yes. Will work fine for you.
17X28 = 476 sq ft. 476/40(sq. ft. in roll) = 12 rolls You may want to look at R13K15X94 batts as they are pre cut to 8' so there is no cutting. You would need 5 bags at 116.25 sq. ft. Pre cut batts result in less labor to install. For your ceiling, recommendation would be R30 - R49 depending on your local codes.