The Benefits and Drawbacks of Closed Cell Spray Foam Insulation

Regarding insulation, there are many different types. Each of them has its own benefits and drawbacks. One type that is gaining popularity is closed cell spray foam insulation. It outperforms competitors in R-Value, damage, durability, resistance to mold and moisture, air sealing, and versatility. There are two (2) types of spray foam insulations: closed cell and open cell spray foams. Closed-Cell foams make a very dense and complex finish with more mass than an open-cell foam and creates an ideal moisture and air barrier. This article discusses the pros & cons of closed-cell spray foam insulation and the application process for closed cells, perfect areas where you should use this product in your home or office, and more.

Closed Cell Spray Foam: What Is It?

Closed Cell Spray Foam is a type of insulation that can be sprayed into cavities between studs or joists, inside walls, ceilings, and other surfaces. The material is made up of tiny cells which are closed with an airtight foam sealant, so it’s not necessary to apply any additional sealing materials. It provides excellent thermal resistance properties, great sound deadening capabilities, and a significant reduction in air leakage.

Pros And Cons

The pros and cons of closed-cell spray foam include the following:

The Pros:

– Better thermal insulation properties than other types of insulation for the home 

– High resistance to mold and moisture damage, as well as a longer lifespan 

– Good sound deadening capabilities which help reduce noise from adjacent rooms 

– Versatile applications that make it suitable for insulating almost any type of building construction. For example, closed-cell spray foam can be used on the exterior of a building, in walls and ceilings, floors, and window frames.

– A significantly reduced amount of air leakage that is not present with other types of insulation 

– Reliably maintains a higher R-value than open-cell spray foam insulation 

The Cons:

– More expensive than other types of insulation 

– High application cost, which includes equipment rental and chemical supplies. Chemical prices are significant for large jobs that require multiple chemicals.

– Can’t be applied in large spaces 

– can only use closed cell spray foam insulation on the exterior of a building. 

– higher cost than some other options like fiberglass or cellulose because closed-cell foam is more expensive to manufacture. However, it lasts longer, so the lifetime cost may be lower for homeowners who plan on living in their homes for more than a few years.

– the sound of spraying closed-cell foam insulation can be loud and bothersome.

Application Process

Spray foam insulation is applied in a two-step process. The first step is sprayed with an airless sprayer into all of the cracks and crevices where there are water vapor problems. This includes walls, floors, ceilings, ductwork, and pipes that leak or sweat steam from hot water heating systems. The second step is to layer it on the inside of walls and other areas where there are air leaks.

The spray foam insulation is typically applied at a thickness of one inch per 200 square feet or two inches if you’re installing new drywall for an exterior wall. It’s also possible to add another layer after six months as needed to seal and insulate the walls.

Spray foam insulation is usually installed in new construction, but can also be applied to existing structures where there are moisture problems or air leaks. This process provides a durable barrier against both water vapor and fresh air infiltration.

Price Of Closed Cell Spray Foam

Spray foam insulation can be costly. Pricing varies depending on the size of your home – and it’s important to note that closed-cell spray foam is often double the cost (or more) than open-cell.

The average price for a single canister, which is enough to cover 500 sq ft of surface area, ranges from $50-$150 per unit. It costs around $250-$550 on average to cover a two-story, 2000 sq ft home with closed cell spray foam.

Many homeowners can purchase a kit that comes with three cans of insulation and an applicator nozzle for around $100 (this will usually cover up to 1800 sq ft). Closed Cell Spray Foam Kits often come in handy if you are doing a smaller project and need to finish it in one sitting.

These are just estimates and vary from place to place. To be specific, you should call the professionals.

We offer free estimates at A1 Home Insulation. Call us today, and we’ll send a professional to estimate how much it will cost to improve your home’s comfort and energy efficiency.


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