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Batt insulation comes in pre-cut sheets and is installed by fitting the insulation between the studs, while blown-in insulation is installed using a machine that blows the insulation into the desired area. Blown-in insulation is typically used for hard-to-reach areas and can provide better coverage than batt insulation.
To understand how insulation really works it helps to understand heat flow, which involves three basic mechanisms- conduction, convection, and radiation. Conduction is the way heat moves through materials, such as when a spoon palaces in a hot cup of coffee conducts heat through its handle to your hand. Convection is the way heat circulates through liquids and gases, and why lighter, warmer air, rises and cooler, denser air sinks in your home. Radiant. Heat travels in a straight line and heat anything solid, and its path that absorbs its energy.
Most common insulation materials work by slowing conductive heat flow and (to a lesser extent) convective heat flow. Radiant barriers and reflective insulation systems work by reducing radiant heat gain. To be effective the reflective surface must face an air space to adjacent unheated attics, garages, basements, and even to the outdoors. Heat flow can also move indirectly through interior ceilings, walls, and floors. Where ever there is a difference in temperature. During the summer, heat flows from the out doors to inside the home,
To maintain comfort, the heat lost in the winter must be replaced by your heating system and the heat gained in the summer must be replaced by your cooling system. Properly insulating your home will decrease this heat flow by providing effective resistance to the flow of heat.
Many homeowners make the mistake of trying to compare spray foam insulation to blow in insulation like fiberglass or cellulose, but the truth is, there really is no comparison. The words may have similar connotation: after all, both involve spraying or blowing a product into an enclosed area of the envelope, in order to insulate the home.
However, where the similarities and. All blown in insulation is generally made from some kind of fibrous material such a cellulose, fiberglass, or mineral wool spray. Spray foam insulation is made from spray polyurethane foam. Open Cell spray foam, because it specific type of material is able to create an effective air barrier where it is applied. This is due to the ability to expand nearly 100 times its original size, within seconds of application. In contrast, any type of blown in insulation, may be able to fill tiny cracks gaps, but it still allows for some air to pass through which can result in air leaks, contribute to higher monthly heating and cooling bills. The airtight barrier makes 50% of the overall efficiency of your insulation. No other form of insulation is going to create an airtight barrier that you get from expanding Foam and that’s far more important than our value of your insulation choice. In addition to the reduction of air moving through your insulation, eliminates 99% of the moisture unit otherwise have to add an additional barrier to fibrous material. If you don’t you risk humidity overcoming your HVAC system leading to condensation and potential mold mildew, water damage problems in the future .
Polyurethane foam is a chemical reaction, formed by spray mixing two liquid components. The result is a quick reaction of expansion to what it’s called “Foam”.
Polyurethane foams are created by the resulting chemical reaction develop from the cross-linking of two liquid pre-polymer groups as “A” and “B” side.
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