Polyurethane foam (SPF) is a spray-applied plastic that is widely used to insulate buildings and seal cracks and gaps, making the building more energy-efficient and comfortable. SPF insulation is known to resist heat transfer extremely well, and it offers a highly effective solution in reducing unwanted air infiltration through cracks, seams, and joints.

Primary Types of Spray Foam (SPF)

Medium-Density SPF Advantages

Medium-density foam is applied as low- or high-pressure two-component spray foam. Medium-density foam offers specific benefits depending on the climate and the type of building in which it is used. Like low-density foam, medium-density SPF is often used for continuous insulation, interior wall cavity fill, and unvented attic applications. However, medium-density is a closed-cell spray foam; it is often used where there is need for the greatest R-value insulation per inch possible. Medium-density foam acts as an air, vapor, and water barrier, and can even help reduce noise.

Medium-density foam can also provide a high tensile and bond strength. It can provide low vapor permanence and is often not affected by moisture such as wind-driven rains.

Low-Density SPF Advantages

Also known as open-cell-foam, low-density spray foam is spray applied to provide a continuous insulation and an air-sealing barrier. Low-density SPF is also called ½ pound foam, as it weighs almost 0.5 lbs. per cubic foot. The foam’s open-cell structure gives some flexibility to the hardened foam.

Low-density foam is applied as low or high-pressure, two-component polyurethane spray foam. Low-density spray foam can be applied on walls, in unvented attics, to ducts and ceilings, and in vented attics. It is known as an air barrier, but permeable to vapor and moisture. It is often used to fill cavities in walls during construction.

Due to its relatively large cell structure, low-density foam stays somewhat soft and flexible after curing.. Low-density spray foam provides heat insulation and seals airflow through cracks, joints and seams by filling the cavities. In addition, this foam can help absorb sound thanks to its softer texture and open-cell structure.

Reach out to Bunkum Valley Roofing for your home spray foam insulation needs!

Why Choose Spray Foam?

  • Home Comfort
  • Building Strength
  • Energy Efficiency
  • Savings
  • Fast application – minimizing work-site congestion
  • Non pro-rated material warranties are available

Common Applications of Spray Foam Insulation Include

  • Attic Insulation
  • Crawlspace Insulation
  • Wall, Ceiling, Basement Insulation
  • Roofing Insulation
  • Exterior Insulation
  • Sealing Gaps and Cracks
  • Better Heat Reflection

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