WEATHERSEAL QUESTIONS & ANSWERS

General Enquiries

What is the difference between open-cell and closed-cell foams?

Both open-cell and closed-cell foams stop the movement of air and slow down the transfer of heat. Open-cell foam products are generally not considered vapour retarders. In climate zones 6-8 a vapour system may be required on the warm side of the insulation relative to the design of the wall or ceiling system. Open-cell foam should never be used for exterior applications. Open-cell foams are more cost effective per unit of U-value than closed-cell foams but do not provide the structural contribution to a building that closed-cell foams do.

Closed-cell foams, on the other hand, have low vapour permeance due to their cell structure. These foams, depending on thickness, may be considered a vapour retarder but not a vapour barrier. Closed-cell foams also have a high compressive strength which allows them to be used for exterior applications.

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How does Weatherseal Insulation provide a draft seal?

Weatherseal Insulation provides a healthier, draft-free, indoor environment. Because Weatherseal Insulation expands to fill every cavity, crevasse and void, it provides a sealed thermal envelope that does not sag or settle over time. This improves indoor air quality by blocking harmful outside irritants such as mould, pollen and other allergens and offers an alternative to fibrous particulates which are attributed to many traditional insulation products.

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How does Weatherseal Insulation provide a draft seal?

Weatherseal Open and Closed Cell insulations are spray foam insulations. Weatherseal insulations adheres to almost any clean dry surface directly and are self bonding. That can be trimmed after application and painted or covered where necessary.

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What makes Weatherseal Insulation so effective?

Weatherseal Insulation's are so effective because they are applied as a liquid and expand 100 times their original liquid size in seconds. As it expands, it conforms and fills each cavity, crevasse and void to create a sealed thermal envelope. Weatherseal Insulation's create a highly-efficient seal against air infiltration, the number one source of energy loss in any structure. This innovative insulation adheres to any clean, dry surface and will not sag, settle or disintegrate. Weatherseal Insulation's also are an inert substance and will not support mould growth, insects or rodents. It also does not breakdown over time, so it creates a sealed interior that blocks harmful outside irritants.

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How does Weatherseal Insulation's save consumers money?

While the initial cost of installing Weatherseal Insulation's may be higher than traditional insulation's, the savings in monthly utility bills outweighs the extra cost and results in a positive cash flow. Weatherseal Insulation's can reduce monthly energy bills by up to 50%.

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How does Weatherseal Insulation control moisture movement and condensation?

A significant cause of moisture issues in structures is the result of warm, moist inside air being exchanged with cold, dry air inside a wall cavity. This moisture can condense within the cavity and result in mould, mildew and rot. Because Weatherseal 800 and Weatherseal 4300 air seal, this moisture movement and subsequent condensation potential is greatly minimized.

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How long does Weatherseal Insulation last?

Indefinitely. As an inert, thermoset plastic, Weatherseal Insulation will maintain their properties throughout the life of the building.

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How long does it take for Weatherseal Insulation to cure?

Weatherseal 800 will cure in approximately 17 seconds as it expands to 100 times its liquid volume. Weatherseal 1600 - 4300 will cure in approximately 2 minutes and expands to 60 times its liquid volume.

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Can Weatherseal Insulation be sprayed over electrical wiring?

Weatherseal Insulation does not pose any issues with electrical wiring as long as the electrical wiring is installed to Electric Regulations. Any overheating issues with Weatherseal Insulation in regards to wiring would be directly related to improper installation of the circuit or the size of the wiring. Polyurethane foam is chemically compatible with electrical wiring plastic.

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