Serving Madison, Wisconsin  |  Keeping you smooth, cool and warm! 


Spray Foam Roof Deck

What Is Spray Foam Insulation?

Spray foam insulation (polyurethane) is a spray plastic that can be applied to form insulation and a sealing barrier on walls, roofs, and other surfaces. Our team is here to help you and solve your insulation problems. Rest assured that we will take care of the entire process that comes with your package.

Types of Spray Foam Insulation

At Duerst Insulation Technicians, our team mainly works with two types of spray foam: a closed-cell and open-cell spray.

Learn About Closed-Cell Spray Foam Insulation

The closed-cell spray foam insulation is a polyurethane with a density of about 2 pounds per square foot. This top-of-the-line insulation creates an air barrier with 2.5 inches of foam to cover all the nooks, crannies, and cracks.

The Test-R value of 6 per inch of foam will outperform its tested R-value by 40 percent. Polyurethane foam systems are closed-cell, offering a superior effective R-value of over 6.0 per inch.

When installed, it's similar to spray painting. It'll help to increase the stability of your home, doesn't deteriorate, and will reduce the potential for mold. It has a vapor barrier that's more efficient and comfortable. It is also a deterrent for insects and rodents.

Benefits of Polyurethane Closed Cell Insulation

  • A stronger home or business building: Spray-applied closed-cell polyurethane foam is the only insulation material that adds structural integrity throughout the wall system. Testing conducted by the National Association of Home Builders (NAHB) Research Center and the Canadian Construction Materials Centre shows spray-applied polyurethane foam insulation between wood and steel stud wall panels increased rack and shear strength 2-3 times compared to standard stick-built components with glass fiber insulation when sprayed onto gypsum wallboard and vinyl siding. It also increased racking strength when sprayed onto oriented strand board (OSB).
  • Less air leakage: Our polyurethane foam wall systems have been tested and are certified to be an air barrier at an application of 1-inch thickness. Once applied, our wall systems are fully-adhered and don't allow air to flow around, behind, or through the insulation system. Most open-cell foams haven't been tested, and therefore, don't qualify as air barrier systems. One open-cell foam manufacturer's product requires an application of 5.5 inches to pass the minimum requirements of the air barrier test.
  • Lower cost of home or business ownership, a return on investment, and savings on heating and cooling bills: Reduce your energy bills for as long as you own your home or business. An insulation upgrade will return your initial investment in just a few years. Take these savings and reinvest the dollars in other projects. Compared with conventional insulation, the savings in heating and cooling can be considerable, up to 40 percent.
  • A sprayed application: The spray foam insulation system conforms to your building's specific requirement. No more struggling with fiberglass batts that don't fit well in tight spaces, around plumbing and electrical fixtures, or that allow air leaks you can't correct once installed and covered with wall board. Spray foam is a permanent application. If applied correctly, it won't deteriorate.
  • Safe for your home: Our spray foam wall system uses inert ingredients and doesn't emit Volatile Organic Compounds (VOCs). Off-gassing from this product has been measured at 0.000 parts per million.
  • Reduces the potential for mold: Mold requires 3 things to grow: moisture, warm temperatures, and a food source. Polyurethane foam insulation has no nutritional value and isn't considered a food source for mold. The use of polyurethane as insulation eliminates condensing surfaces and reduces the potential to accumulate moisture. It also eliminates air movement within the wall cavity. Other insulations are less successful at controlling air infiltration and providing adequate insulation to eliminate condensing surfaces, thus increasing the possibility of an environment susceptible to mold. Closed-cell foam is approved by FEMA for use in flood regions.
  • Reduces pests: The spray foam insulation system will also seal out pests like insects and rodents.  
Spray foam

Benefits of Open-Cell Spray Foam

Open-cell spray foam insulation is a little spongier because the cells are open. This type of insulation should be installed by applying it to a small access in a closed wall cavity. Open-cell helps to increase the R-value of your home.

Open-cell is a good option for cinder block walls and wall cavities that are hard to get to. The open-cell insulation will help several other potential issues including sealing gaps and holes, reduce heat loss, air, and filtration, and a good sound proofing product as well.
Insulation work

Injection Foam, Another Option to Spray Foam

An option to spray foam insulation, injection foam offers home and commercial building owners an additional means to insulate hard-to-get-at areas, such as in between walls in existing buildings, concrete blocks, etc.

Injection foam is non-expanding and can be inserted into a wall cavity from either the interior or exterior of the building. The foam flows to fit the space and can even be used in older homes where insulation is insufficient or non-existent. Additionally, it can even be installed behind existing brick.

Amazing Benefits of Injection Foam Insulation

Sloped ceilings, basements, and crawlspaces with concrete block walls can be insulated with ease using injection foam. It's an outstanding retrofit product and serves as an excellent sound inhibitor, making living and work spaces quieter and nicer to occupy.

In addition to its thermal insulation properties, injection foam seals gaps and holes often found in sheathing, which results in less air infiltration, a major source of heat loss.

Duerst Insulation Technicians are happy to discuss any of the fine insulation products we offer. Contact us for your FREE estimate and to schedule your appointment!
Family owned and operated
"Excellent! Great communication about bid and timeline. The insulation looks great and my house is definitely less drafty. I also appreciated how well cleaned up the attic/access were."

-A Caes, Madison, 5 stars
Share by: