Spray Foam Calgary – How Does Insulation with Spray Foam Calgary Work?

Spray foam Calgary is created by combining and reacting two chemicals. The two materials react very fast and expand on contact to form the foam which insulates, provides moisture barrier and create air seals. The SPF is best known for its ability to resist heat transfer. It is also the perfect solution when you want to reduce unwanted air infiltration through seams, joints and cracks. Before considering Calgary spray foam for your project, it is important that you understand that there are two types that you will have to pick from; high pressure foam and low pressure foam.

Whether it is retro-fitting a home or picking insulation for a new building, homeowners are more aware of the many benefits that polyurethane Calgary offers. It not only helps save on the energy costs but also improves comfort. The solution excels over other solutions because it forms a continuous barrier on the walls, around the corners and on contoured surfaces. When installed by professionals, the SPF is considered as a high pressure foam or low pressure foam. It is available as open cell or closed cell foam. You have to understand the differences between the two types of spray foam before picking one for your project. Discussing your project objectives with spray foam contractors Calgary will help select the best type.

Closed cell foam

  • Has a high R-value of more than 6.0 per inch of thickness
  • Has a low moisture vapor permeability
  • Its creates airtight seals
  • Has higher rigidity and strength
  • Creates water barriers
  • It’s of medium density of between 1.75 to 2.25 lbs/ft3
  • Its absorbs sound

Open cell foam

  • Has a lower R-value of about 3.5 per inch of thickness
  • It has a controlled but higher moisture vapor permeability
  • Creates an air barrier at a full wall thickness
  • It has lower rigidity and strength
  • Has a lower density of between 0.4 and 1.2 lbs/ft3
  • Absorbs sound pretty well

Understanding the main differences between open cell and closed cell spray foam Calgary is the only way you will be able to select the type that is best suited for your project.

How is the foam made?
During installation, two chemicals are mixed. Their reaction is what creates the foam. The two chemicals come in two drums; A and B. Drum A contains methylene diphenyl diisocyanate (MDI) and polymeric methylene diphenyl diisocyanate (pMDI). Drum B contains catalysts, polyols, blowing agent, surfactant and flame retardant. There are safety data sheets (SDS) for each drum. Your calgary spray foam contractor will provide you with the SDS upon request.

Upon mixing, the foam hardens very fast. Because the chemicals are hazardous during mixing, the installer will use specific protective equipment. He will also ask you to leave the house during installation. Once it is cured, it is very difficult for you to remove spray foam. That is why everything has to be done the right way the first time around. Your spray foam contractors Calgary will give you guidance on when you can get back into your home.

Spray foam Calgary