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Open-Cell and Closed-Cell Spray Foam Insulation

Spray foam insulation is an effective heat-transfer barrier, insulator, and gap-sealer. It can be used in place of cellulose or fibreglass insulation. Spray foam has the potential to last for decades if it is installed correctly. In some cases, it can even outlast the structure it’s attached to.

The choice between open-cell and closed-cell spray foam may leave you feeling confused if you’re thinking about investing in this type of insulation. Since each has benefits and drawbacks, comparing them would be unjust. The trick is figuring out which kind will serve your purposes best. We break down the differences between the two from an implementation and efficiency perspective.

Difference in R-Value

The high R-value of spray foam makes it ideal for insulating attics and basements. R-value is a metric that measures how well an insulation material prevents heat from escaping. The R-value quantifies how well heat is retained by insulation. The R-value is dependent on the spray foam’s moisture resistance and durability. Open-cell foam is a superior insulation option because it is lightweight, flexible, and easy to install in comparison to closed-cell foam, which is heavy and inflexible. Open-cell foams are less heavy and have a lower R-value than closed-cell foams.

Cost Differences

The price difference between spray foam insulation and more conventional methods of insulation can vary depending on a number of factors. Usually, it depends on how much insulation was installed. Since open-cell spray foam is less expensive to produce and install, it also costs less. Contrarily, closed-cell spray foam often requires multiple thinner coats, which can increase installation time and cost. There will be an initial cost, but the increased value and quality of life you enjoy in your home will make up for it many times over.

Differences in Expansion Rates

Open-cell foam insulation typically expands at a faster rate than closed-cell insulation. Open-cell spray foam has the potential to grow as much as 100 times its initial size after application. It’s ideal for residential use due to its compact size and its ability to squeeze through narrow passages like those found in unused basements, attics, and wall studs. Since open-cell foam reduces stress on the HVAC system, it also reduces the cost of running it. More dense than its open-cell counterpart, closed-cell spray foam limits its expansion and maintains its shape over time. Regardless, it shares the same advantageous air-sealing qualities as open-cell foam.

Permeability Differences

In order to prevent draughts, heat loss, and moisture buildup, you can use a spray foam, whether it has open or closed cells. Open-cell foam’s cellular structure allows some moisture to pass through, which helps in locating and fixing leaks more quickly. But closed-cell spray foam is impervious to moisture and won’t get soaked. Because of this, it is a great option for reinforcing sheaths and frames in flood-prone and extremely damp environments.

While closed-cell foam has a tight, dense structure, open-cell foam is thicker and has a softer source material, making it better at dampening sound waves. Because open-cell foam is so effective at preventing the accumulation of dust and allergens, it can be put to use in a wide variety of settings. Closed-cell spray foam insulation is too sanitised an area for mould and mildew to grow in.

Choose Isothane

There are numerous applications for polyurethane in the building and remodelling industries. Spray foam products from Isothane are made using polyurethane in the manufacturing process. Because of our vast network of relationships in the field, we can call on the best installers in the business. Don’t hesitate to get in touch with us if you’re curious about the details.

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Published inHome Zone

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