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How is spray foam applied?

applied foam spray
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How is spray foam applied?

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Spray foam insulation is sprayed directly into place onto the work surface (many substrates will accept foam). It is applied as a liquid, using a hose and spray gun set up. It is a combination of two substances that blend together on contact and immediately transform into a thick foam, permanently in place, creating an air-tight seal with any surface to which it is applied. The curing process happens within seconds. After several days, exposed foam may change colour, often to a yellowed state. This has zero impact on product effectiveness, it is simply a reaction to ultraviolet light, such as sunshine. As with any open surface, the foam insulation can be sprayed after electrical and plumbing services are in place. It then expands many times its initial volume in seconds, sealing all gaps.

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