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technically unfaced fiberglass insulation has an r value of 21 for 6 inches but that's if its perfectly installed, no gaps, no crushes, no air moving through it, no moisture, and its completely in contact with the interior heated surface. Since its unfaced, we assume it will have moisture and air moving through it and an average installation, it's likely R-13 or less.
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∙ 12y ago
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∙ 11y agoUse english, thanks!
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What is the R value of attic insulation covered with plywood decking?
Every insulation has a different R value. It ultimately is determined by which insulation you will be using. Now lets do rough estimate. 4" thick, regular fiberglass mat has R-value of 13. Assuming that plywood has the same to half the insulating value of fiberglass, 1/2" plywood would have 1/8 to 1/16 of R-value of that 4" mat. Roughly R-1.6 to R-0.8
How thick a concrete wall would be needed to give the same insulating value as 3 and a half inches of fiberglass?
Poured concrete has an R value of about 0.08/inch. Fiberglass batt has an R value of about 3.14/inch (blown fiberglass wall insulation is about 3.2/inch). From these values we can calculate that the equivalent insulating thickness of concrete would be about 3.5x3.14/0.08 = 137.4 inches. Note that concrete blocks have a somewhat better insulating value due to the incorporated air pockets. A 4" concrete block has an R value of about 0.2/inch An 8" concrete block has an R value of about 0.15/inch A 12" concrete block has an R value of about 0.1/inch
How many inches is r-30 insulation?
Regular 10". High density which is more expensive 8"
How do you insulate a 2 x 8 roof over a bonus room?
Fiberglass batts. After the framing is complete, fit the fiberglass batting between the 2x8 and staple the paper moisture barrier to the framing to hold it in place. Make sure that you do not leave any gaps in the insulation in the ends or at seams.
8 inches is in how many miles?
8 inches is about 0.00013 miles. The value is better to give in inches due to how small 0.00013 is as a number. It is more practical to just say that it is 8 inches.
If NH PN plus HM 12 inches and PH 17 inches what is the value of HM in inches?
8 inches
How much insulation should you have in your ceiling in your house in Columbus Georgia?
The more the merrier. R19 at least but add a roof ridge vent if you dont have one. That is cheap - 2-3 hundred. My home has no wall or floor insulation. actually 6 to 8 inches of fiberglass blown or batts is neither too much nor too little for any place in the u.s. always better a little too much than too little.
How many 6 feet 8 inches how many inches?
Assume the number is 6'8". Interpret that value as: "6 feet and 8 inches" Note that 1 ft = 12 inches. Then: 6 ft = 72 inches Add that by 8 inches to get 80 inches.
How many inches are there in 6'8?
Assume the number is 6'8". Interpret that value as: "6 feet and 8 inches" Note that 1 ft = 12 inches. Then: 6 ft = 72 inches Add that by 8 inches to get 80 inches.
What is the insulation value of an 8 cement block?
block machine,concrete block machine,and cement block machine and so on!
What is the equivalent of 8.95 feet in feet and inches?
technically it is 8 feet 11.4 inches which is a little over 8 feet, 11 and 3/8 inches. which is 11.375 inches just multiply the .95 by 12 and you will have the inch value of the decimal
How many square cm are in 8 square inches?
1 inch = 2.54 cm Hence 8 inches = 2.54 x 8 = Find the value, you can I am sure Multiply the value you found above by itself and that is your answer. Try it. You can do it. Good luck!
