How thick should spray foam insulation be sprayed?

Answer: It depends on the codes and what type of foam.

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: 6 inches

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: Spray foam insulation should be a maximum of 5 and 1/2 inches.

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: 2 to 4 in.

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: Depends on the R-value you should spray up to an R30 for walls

Answer: depends on type and density

Answer: not sure

Answer: As needed to Revalue need and depth of lumber.

Answer: I would follow the directions from the manufacturer.

Answer: As thick as the rafter valley

Answer: 2-4"

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: 3 to 5 inches

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

Answer: Follow manufactures instructions.

Answer: It should be applied to the proper thickness per R-value guidelines.

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: Read manufacturer label

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: Usually sprayed between 2 to 3 inches thick resulting in an R-value between 14 and 21.

Answer: 4 to 6 Inches

Answer: depending on the desired R-Value

Answer: For code: 3" in walls and 7" in ceilings or cathedral ceilings (Maine Code)

Answer: in two inch increments

Answer: depends

Answer: 6 to 12 inches

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: The R-Value is dependent upon coverage and thickness of material used.

Answer: 4"

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

Answer: it depends on where the spray foam is being used.