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Insulation & Air Sealing


Many older Vermont homes lack sufficient insulation in the walls and attic. Not only does this allow heat from the living areas to escape, but it causes pest problems. Poorly installed insulation has warm pockets which are ideal places for pests like small rodents and cluster flies to live during the winter. EnergySmart of Vermont can help rid your home of cluster flies by improving your home’s insulation.

Cellulose insulation, made from ground up newspapers, can be blown into walls to fill voids. It can also be blown into attics to add another layer to the existing insulation. Another type of insulation that we can install is rigid foam insulation. This material has twice the density of cellulose and is almost airtight. It is relatively inexpensive but requires more labor to install than other types of insulation. Rigid insulation works great to insulate basement doors and attic hatchways, as it is easy to cut and fit.

Air Sealing

Controlling air leaks in your home is one of the best ways to improve energy efficiency. Stopping cold air from seeping into the basement and the first floor will make you and your family much more comfortable in the winter. Keeping warm air from escaping out the top of your house will significantly reduce your fuel bills. Air sealing will also greatly increase the effectiveness of your existing insulation.

There are several ways to do air sealing. The starting point is applying caulk to fill small gaps where cold air can penetrate. We use the best quality products, as caulk not only needs to adhere to surfaces, it must remain pliable as the building continues to move slightly. Cheaper caulk can dry out and separate from surfaces, opening up the cracks again.

Weatherstripping & Foam Air Sealing

Applying Weatherstrip Insulation to Window

Weatherstripping is a very important method to seal up leaks. Doors and windows need to open and close easily, so weatherstripping must not affect their operation. When they are shut, the weatherstripping needs to block cold air from being able to enter the house. EnergySmart uses professional-grade weatherstripping and our employees are experts at cutting and installing it so that your windows and doors will be draft free, while remaining easy to open and close. For sealing bigger cracks, we look more to foam insulation products. These are used in areas that are out of sight, such as between windows and studs. Foam is often used to seal penetrations where holes were drilled for wires, because it easily wraps around materials. Spray foam is used to cover large surfaces that have lots of cracks, as it can be applied quickly, which reduces labor costs.

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