How do we use spray foam insulation? Our team uses a spray foam gun to inject closed- and open-cell insulation onto surfaces and into cavities like attics, walls and crawl spaces. This preferred type of insulation: Sticks to almost any surface Expands to fill the space it's injected into Creates an airtight and watertight seal Remains effective for decades You can count on Buffalo River Spray Foam You can expect it to help your HVAC system run more effectively and reduce your energy expenses. To find out more about our spray foam services, contact us today.