Spray Foam Insulation 101

Spray Foam Insulation 101

Spray foam insulation is commonly used as a building material, but homeowners may not know too much about it and how it may be useful inside the home.

What is it?

Spray foam is a type of air barrier material and insulation designed to seal the floors, walls, and cavities in the ceiling against movement of air.

This will include the points where the doors and windows meet the walls and around the light fixtures and electrical outlets. In the open cavities, it is easy to spray the spray foam, such as in new construction crawl spaces, attics, and rim joists.

The spray foam will not lose shape, and will not sag, compress or sag over time. It can fill the gaps, cracks, and crevices upon installation, unlike most traditional insulation materials.

Benefits of Spray Foam Insulation

Spray foam will air seal as well as insulate a building or home and contribute to:

· Reduced air leakage

· Enhanced indoor comfort

· Increased energy efficiency of the HVAC system

· Decreased risk of moisture ingress and mold

· Quieter living, working or resting spaces

· Reduced cooling and heating bills every month

Open Cell Spray Foam

This type of spray foam insulation has a unique composition which makes it light and pliable. As the foam dries up, the inside gas from the cells escapes through the cell wall openings. This creates foam, which will shift as it settles.

Closed Cells Spray Foam

This type of spray foam insulation is much heavier and a denser material. It is designed to create a dense surface, which will create a strong resistance against temperature changes and weathering.

How does it work?

Closed cell and open cell spray foam insulation will impact the heat transfer (conduction) and the air flow (convection) to increase your home’s energy efficiency and comfort levels.

The overall role of this insulation is to resist the flow of heat inside or outside of a space. Therefore, it will keep your home cool in the summer and warm in the winter.

Many homes have the problem of air leakage, which leads to significant energy loss, apart from the discomfort caused by cold floors, drafts, and ice dams. Clearly, this inflates the monthly energy bills as well.

Some types of open spray foam insulation has the ability to expand up to a hundred times its size, which allows it to fill every little corner in the cavity.

Composition of Spray Foam Insulation

To create spray foam, two liquids are combined in a way that a chemical reaction is produced. This reaction allows for the formation of spray polyurethane foam. These liquids are typically available in different containers, and are called “A” side and “B” side in the common parlance of insulation professionals.

The “A” side comprises MDI (methylene diphenyl diisocyanate) and pMDI (polymeric methylene diphenyl diisocyanate).

The “B” side is usually a mixture of catalysts, polyols, flame retardant, blowing agent, and surfactant.

Call an Expert for Spray Foam Insulation

To determine the right type of insulation for your home or building, and to learn more about the option of spray foam, get in touch with the specialists at calinsulation.com today.

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