How thick should spray foam insulation be sprayed?

Answer: Depends on the application.

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: Depends on use area

Answer: 6 inches

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

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

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

Answer: 2 to 4 in.

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

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

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

Answer: depends on type and density

Answer: 2"

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

Answer: I would follow the directions from the manufacturer.

Answer: Thick enough to fill the void.

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 location & Applicatin

Answer: 3 to 5 inches

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

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

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

Answer: It depends upon the type of foam insulation

Answer: 2 inches

Answer: Read manufacturer label

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

Answer: refer to the manufacturer's specifications

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

Answer: 4 to 6 Inches

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

Answer: in two inch increments

Answer: 6-8 inch

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: Unknowed

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

Answer: 4"

Answer: No more than 6'

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