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From everything I have seen it would be about 12 inches for conventional fiber glass insulation available from Home Depot or Lowes.
Polyiso insulation can give up to r-6 per inch. That equates to 7 inches for r-42.
What else can I help you with?
How thick is R30 insulation?
about 9 1/2 inches thick
What keeps your house insulated?
loft insulation, draught proofing cavity wall insulation thick curtains thick carpets double glazing
What would have the best thermal insulation?
A thick mug.
What have the best thermal insulation properties?
A thick mug.
How Thick is R25 insulation?
R25 can be many different thicknesses. It depends on the insulation product. Styrofoam SM would need to be 5" thick. Pink fiberglass would need to be about 7" thick. White (beadboard) styrofoam would need to be about 6.75" thick. Blown in attic insulaton would need to be about 10" thick.
What is the insulation or r value of water 2 feet thick?
What is the r value of water 2 feet thick
What is a thick insulation used in walls and roofs of homes?
Fiber glass.
Why would an air-filled window be better than a solid thick window?
The air layer will improve the thermal insulation.
How do you determine the insulation thickness for heat insulation?
It's about 25mm - 1" vermiculite thick layer for every 100 degrees Celsius temperature level. For 350C oven temp reach the insulative layer should be 70mm thick.
How do you wire 220 volt 200 amp diagram?
With thick wires that have excellent insulation.
What is insulation in a cargo refrigeration plant?
Thick glass. Cooling agent is Dry Ice.
What would be cost of ips flooring?
Rate of IPS flooring is Rs. 26.00 for 3" thick.
