Spray Foam Insulation in Greater Watertown, New York
Serving Canton, Massena, Carthage and surrounding areas
A moisture barrier than can cause moisture damage. When installed between rafters, spray foam insulation provides no escape route for moisture that gets into the roof sheathing.
The popularity of spray foam insulation has a lot to do with its unique properties. It expands to many times its sprayed-on volume, filling gaps so that energy-wasting voids are eliminated. The R-value of closed-cell spray foam (about R-6 per in.) is higher than that of fiberglass or cellulose. Because the foam has excellent adhesive qualities, it won't settle, shift or fall out of place once it's installed. And closed-cell spray foam provides a moisture and air barrier in addition to acting as insulation.
Spray foam is also very versatile. The cans of spray foam available at home centers and hardware stores do an excellent job of filling gaps and small openings —sealing air leaks that waste energy by allowing conditioned air to leak out of the house, while outside air leaks in.
Problems with two-part spray foam
Large-scale spray foam installations are done using 2-part (or 2-component) spray foam. Two chemical compounds are mixed right at the application nozzle, causing a foaming reaction.
This type of installation is usually done to spray a thick layer of insulation between studs or attic rafters. Although it's a fast and effective way to insulate and air-seal a large space like an attic, there are some significant problems with large-scale spray foam applications.
Dr. Energy Saver Watertown, NY is the trusted spray foam insulation company serving Greater Watertown including Watertown, Fort Drum, Potsdam, Adams, Evans Mills, Dexter, Norfolk, Norwood, Theresa, Adams Center, Lowville, Evans Mills, Norfolk, Gourverneur, Dexter, Theresa, Fort Drum and surrounding areas.
Consider the following disadvantages:
High cost. Insulating with two-part spray foam is much more expensive than insulating with other materials. For example, it can be two or even three times as expensive as installing loose-fill fiberglass or cellulose insulation.
Overspray. Even with an experienced installer, a spray foam job usually results in excess foam being applied. If this foam lands on windows, HVAC equipment or other areas, it can be difficult and time-consuming to remove.
Ventilation. Insulating an attic by spraying foam between attic rafters eliminates normal ventilation that occurs between soffit and ridge vents. While some experts say that turning a ventilated attic into an unventilated attic causes no problems (such as moisture damage; see below), others disagree.
Moisture damage. Filling the space between attic rafters with spray foam will trap any moisture that manages to leak past the roof shingles. Eventually, this trapped moisture can cause roof sheathing and even rafters to rot, creating a potentially dangerous structural problem.
Rigid foam is often a smart alternative to spray foam
Talk to your Dr. Energy Saver Watertown, NY contractor about using rigid foam insulation as an alternative to spray foam —in the attic and elsewhere in the house.
Rigid foam has some of the same advantages that spray foam offers, such as high R-value, air sealing and resistance to water damage. But it can be installed so that attic ventilation is maintained, and so that moisture damage is very unlikely to occur.
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