Open-Cell Vs. Closed-Cell Spray Foam Insulation – Which is better?

Open-Cell Vs. Closed-Cell Spray Foam Insulation - Which is better?

You’ve made a wise choice if you’ve decided to use cell spray foam insulation in different areas of your home to insulate it. You might have heard that it offers various benefits, such as the ability to reduce heating costs and boost energy efficiency in your home. You may have also heard that spray foam insulation can keep the critters out and eliminate the expense of having the Orkin man run them off. Spray foam insulation is excellent for reducing the number of allergens in your home, as well. It can be a real lifesaver if you have a family member who suffers from allergies. 

Those are just a few legitimate reasons to use spray foam insulation, but you need to know which kind of spray foam insulation to do the job right. There are primarily two types of spray foam insulation: closed-cell insulation and open-cell insulation. The main differences between the two are in their structural makeup. Closed-cell insulation has a closed-cell structure, as its name suggests. Open-cell insulation’s structure is open. These are more of the differences between the two products so that you can make an informed decision about what you want to use throughout your home.

Open-Cell Vs. Closed-Cell Spray Foam Insulation - Which is better?
So what’s the cost? Open-cell spray foam vs closed-cell. What should I expect?

What’s The Cost?

If you’re looking for cost-effectiveness in your project, then open-cell would be your best choice there. The manufacturers use fewer resources to make open-cell insulation than they use to make closed cell. Therefore, your costs will be significantly lower if you go with open-cell insulation.

Open-Cell Spray Foam vs Closed-Cell: Insulation Capability

The R-value is a grade that experts assign to rate how well materials can resist heat. A high R-value means that the product’s insulation capacity is high. Closed cell insulation has an R-value of R6 to R7 per inch. Open-cell insulation has an R-value of about R3.5 to 4 per inch. A closed cell product will be better for you if you want to ensure that you get the highest level of R-value per inch.

Open-Cell Spray Foam vs Closed-Cell: Water Vapor

Of the two choices, closed cell spray foam insulation is the only one that can block water vapor and act as a water vapor barrier. Open-cell spray foam insulation does not have that capability. However, you can compensate for it by installing a vapor barrier to your structure. Additionally, the open cell spray foam insulation does have the ability to allow water vapor to dry. 

Open-Cell & Closed-Cell: Air Blockage 

Now you’re probably wondering, “Should I use open or closed cell foam to block air?” The good news is that both types of spray foam insulation will block air for you.

The Best Uses for Spray Foam Insulation

Both open-cell and closed-cell insulation types have the best uses because of their characteristics and densities. Closed cell spray foam insulation is best to use in basements, crawlspaces, freezers, coolers, or where high moisture content is present. Open-cell spray foam insulation is best to use in walls that will be covered, upper structure floors, and roof decks.

Open-Cell vs. Closed-Cell Foam Insulation The Bottom Line

When it comes to making your selection between open-cell vs closed-cell foam insulation, you have to weigh your costs and consider both products’ qualities to know what’s right for you. We’ve only scratched the surface on the differences between these two types of insulation services. You can learn a lot more by contacting us and discussing your insulation plans with a professional spray foam insulation installer.

Share this post

Share on facebook
Share on google
Share on twitter
Share on linkedin
Share on pinterest
Share on print
Share on email

Copyright 2020 Advanced Seal.

All rights reserved.

Rossville, IN office

L: 5190 West 750 South Rossville IN 46065

T: 866-236-2648


Sawyer, KS Office

L: 60188 SE 50th Ave Sawyer, KS 67134

T: 833-436-2648