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How thick should spray foam insulation be sprayed?


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Answer: Per inch and is usually sprayed between 2 to 3 inches thick resulting in an r value 14-21
Pinkerton Inspection Agency LLC
Answer: There are many variables to the thickness it should be.
Mountain View Inspection Services
Answer: Spray foam insulation should be a maximum of 5 and 1/2 inches.
H&R PROFESSIONAL INSPECTIONS
ProMatcher
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.
Reality Property Inspections
Answer: 14 to 16 inches thick in the rafters.
Heritage Inspectors
Answer: That would depend on where it is located and the brand and chemical makeup of the insulation.
Moran Property Inspections
ProMatcher
Answer: Folloow instructions, every situation can be different. Best left ot porfessionals.
North State Inspections
Answer: Normally the insulation depth is about the same as wall thickness.
Kairos Home Inspections
Answer: As thick as it should be to properly seal.
Royalty Home Solutions, Inc
ProMatcher
Answer: depends on type and density
Huskey Home Inspection, LLC
Answer: not sure
Thomas Property Services llc
Answer: 2"
Allied Services Home Inspection
ProMatcher
Answer: I would follow the directions from the manufacturer.
Contractors Corp.
Answer: As thick as the rafter valley
Ray Inspection Services Corp
Answer: Thick enough to fill the void.
Brewer Contract Consulting
ProMatcher
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.
Look First Homes, LLC
Answer: Depends on the manufacturers directions.
Best Choice Inspections
Answer: Depends on location & Applicatin
KJ Wood Home Inspections
ProMatcher
Answer: As thick as you want. R6 per one inch
The Inspection Boys
Answer: Follow manufactures instructions.
Home Inspection Solutions
Answer: Depending on areas, attic or walls. Attic 14 to 16" for a good r-rating
Ray REI
ProMatcher
Answer: It depends upon the type of foam insulation
Everest Home Inspectors
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.
Nicholas Home Inspection & Maintenance, Inc.
Answer: 2 inches
CLEAR POINT HOME INSPECTIONS LLC
ProMatcher
Answer: That would depend on the building departments or code enforcement whom regulates the construction specifications.
Your Home Property Consultants
Answer: Proper thickness per Code R-value requirements.
Epoch Property Inspections
Answer: refer to the manufacturer's specifications
A Balance Home Inspection
ProMatcher
Answer: 4 to 6 Inches
One Way Home Inspections
Answer: depending on the desired R-Value
Thomas Property Services
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”
NH Roof Consulting & Inspection
ProMatcher
Answer: in two inch increments
A & H PROPERTIES
Answer: depends
OnSite Home Inspection, LLC
Answer: 6-8 inch
All Season Home Inspections
ProMatcher
Answer: Spray foam is used mostly to insulate walls and seal cracks. The thickness during installation needs to follow the manufacturers recommendations.
Corley Home Inspections, LLC
Answer: 3-4 inches
G M M Property Inspections
Answer: Unknowed
MJL Home Inspectors
ProMatcher
Answer: 4"
Adam & Eave Properties, Inc.
Answer: 3 inches in exterior walls and about 7 inches in attics
Smith Insulation
Answer: No more than 6'
iInspect
ProMatcher
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