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Spray Foam Insulation

Foam Adhesive Questions and Answers


How much does closed cell foam weigh compared to open cell?

2 lbs / SF - closed.  0.5lbs / SF - open.

What is S.W.R. [Secondary Water Resistant]?
It's an additional roof protection system for when your roof fails.

What is Deck Reinforcement?
Your existing roof decking is only secured by nails. InsulStar Plus super glues the plywood decking to the trusses, making it 3 times stronger than is required by code.

Does InsulStar Plus meet the requirements of local building codes?
Yes [Florida #9975].

Do all insurance companies recognize InsulStar Plus [Foam adhesive]?
Yes, it's recognized as both SWR and Deck Reinforcement.

Does InsulStar Plus raise roof temperature?

How will I know if I have a roof leak?
Water that penetrates your roof deck cannot penetrate the closed cell foam underneath it. Aided by gravity, it will then follow the path of least resistance to run along to top of the insulation, down to the soffit/fascia area, where it will make a tell-tale stain.

What is the difference between foam adhesive and foam insulation?
Foam adhesive glues the roof to the trusses and keeps water out. Foam insulation does not.

Will InsulStar Plus protect against tornadoes?
Yes, 90% of all tornadoes are under 150mph.

What about hail damage?
How does spray foam work?
A two-part mixture is applied to the inside surface of exterior walls, to the underside of the roof, and beneath floors
 in basements and crawl spaces. The spray mixture expands rapidly to fill all cracks and voids, completely and permanently
 adhering to wood, masonry, metal studs and joists.
When can spray foam be installed?
Spray foam insulation is professionally installed at the same point in the construction cycle as other types of insulation. That is, it should be installed after the rough plumbing, electrical wiring, and heating and air conditioning ducts have been installed, but before the interior walls are completed in new home construction.

What types of spray foam products are available?
There are two basic types: closed-cell, rigid spray foam (like our InsulStar product), and “soft” or semi-flexible open-cell spray foams (like Sealite). 

Will foam insulation loose it’s R value over time?
When first installed, spray polyurethane foam’s R-value is about 10 for a one-inch thickness. Over time, the R-value drops to between 6.5 and 7.0 (one inch) and stabilizes at that value. The time it takes to reach an R-value of 6.5 to 7.0 depends on a variety of factors, including total foam thickness. Many industry studies indicate that a  one-inch thick sample of foam will stabilize after six months and maintain that approximate R-value for decades.

Can spray foam insulation be applied directly to electrical wires and recessed lights?
Spray polyurethane can be applied directly to electrical wiring. Recessed lights or other fixtures may require a certain amount of air circulation around them for cooling purposes. In these cases, a box can be built around the fixture with gypsum wall board; then spray foam can be sprayed directly to the outside of the box.

Will foam insulation deteriorate over time?

How long has foam insulation been used in homes?
Spray polyurethane foam was commercially developed in the United States in the mid-1960's. Homes have been insulated with spray foam since that time.

Will spray foam insulation absorb or trap moisture?
Most moisture problems in houses are due to moisture entry from air leakage. Because spray polyurethane insulation provides such an excellent air barrier, this source of moisture is virtually eliminated. Other potential sources of moisture can be excluded with proper construction techniques and materials.

Does foam insulation contain formaldehyde?
No, it does not.

Will foam insulation strengthen the structure of my house?
Yes, closed cell foam is rigid and structural. Your walls will be more resistant to winds and you’ll notice less creaking and shaking when doors are slammed or when the kids are romping about.