How thick should spray foam insulation be sprayed?

Answer: This depends upon the climate zone and local building codes, and the type (open vs. closed cell) of insulation used.

Answer: It depends on the application. Most attics/ roof decks get 5 inched of open cell while most walls get about 3 _ 3 ¹/2 for open cell . If it's closed cell you typical get about 2 inch .

Answer: Depends on use area

Answer: In TN, 3 inches in wall and 5 inches on the roof deck

Answer: Per inch and is usually sprayed between 2 to 3 inches thick resulting in an r value 14-21

Answer: There are many variables to the thickness it should be.

Answer: The thickness of the spray will be determined by the areas to be sprayed and the actual foam being used. In many cases 2" is sufficient, however many local building codes are skeptical about the use of spray foam insulation.

Answer: 14 to 16 inches thick in the rafters.

Answer: That would depend on where it is located and the brand and chemical makeup of the insulation.

Answer: Folloow instructions, every situation can be different. Best left ot porfessionals.

Answer: Normally the insulation depth is about the same as wall thickness.

Answer: As thick as it should be to properly seal.

Answer: depends on type and density

Answer: not sure

Answer: 2"

Answer: I would follow the directions from the manufacturer.

Answer: As thick as the rafter valley

Answer: Thick enough to fill the void.

Answer: Spray foam should be applied from top to bottom from about 12" away. with a side to side motion spray as you quickly move down between the studs.

Answer: Depends on the manufacturers directions.

Answer: Depends on location & Applicatin

Answer: As thick as you want. R6 per one inch

Answer: Follow manufactures instructions.

Answer: Depending on areas, attic or walls. Attic 14 to 16" for a good r-rating

Answer: It depends upon the type of foam insulation

Answer: This question is too relative to answer accurately. It depends on the space being filled and the application. Also, even the foam type that is designed to expand less for door and window application, does expand some, so care should be taken.

Answer: 2 inches

Answer: That would depend on the building departments or code enforcement whom regulates the construction specifications.

Answer: Proper thickness per Code R-value requirements.

Answer: refer to the manufacturer's specifications

Answer: 4 to 6 Inches

Answer: depending on the desired R-Value

Answer: Open-cell foam reaches a point of diminishing returns at around 5" That threshold is even lower for closed-cell foam, which experiences diminishing returns at around 3" or 4”

Answer: in two inch increments

Answer: depends

Answer: 6-8 inch

Answer: Spray foam is used mostly to insulate walls and seal cracks. The thickness during installation needs to follow the manufacturers recommendations.

Answer: 3-4 inches

Answer: Unknowed

Answer: 4"

Answer: 3 inches in exterior walls and about 7 inches in attics

Answer: No more than 6'