Expanding foam insulation is used for ceilings, walls, attics and basements. It's also used around window seals, electrical boxes, outlets and other small, enclosed places. Sailors use it for docks and pilots to strengthen airplane wings. What is it, and how is it applied? I will give you details on this and the other 3 insulation types, in hopes to assist you when choosing insulation. How is Expanding foam insulation applied?

Contractors use special equipment to shoot either polyurethane or modified urethane liquid into the area. While drying it expands to fill every inch, once it's dry, the excess is scraped off and a thermal barrier is applied When choosing insulation, you should consider the numerous of benefits of expanding foam insulation. It makes a good air sealer, improving air quality, lowers heating and air-conditions cost. This eliminates wind washing, caulking, house wrap or vapor seal. It can be used in high or low temp. It reduces noise, helps against flooding and controls condensation. It doesn't shrink, is not biodegradable and makes structures sounder.

You can apply this over old material. When choosing insulation there are three other types to consider; loose fill, batt and blanket and rigid foam board. I will talk about each briefly. Loose fill made from fiberglass or cellulose like Expanding foam insulation it's blown into the walls to make a blanket effect. It is used in unfinished attics and walls. When choosing insulation you should think about Batt and blanket. It's made from fiberglass and rock wool. It's installed between studs 16-24" apart. It's the cheapest, but proper installation is needed. After installing the house needs winterized further.

The last to consider when choosing insulation is rigid board. This is made of fiberglass polystyrene or polyurethane. It's installed in flat roof reproofing, basement walls cathedral ceilings and perimeter insulation. Unlike expanding foam insulation it's not flame resistant and should be covered with either fire resistant paneling or dry wall. Bugs often make nests in this insulation so insecticide treated material is needed when insulating basement walls. Because of these problems I would not pick rigid board when choosing insulation. Expanding Foam insulation costs between $1.25 -$2.25 to install, but unlike the other, it doesn't require extra work. It's environmental friendly because it takes less energy to produce, does not hurt the ozone layer and reduces global warming gases. It improves air quality and reduces noise.

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