Benefits of Polyurethane Insulation

Polyurethane insulation

  • Keeps building cool, insulating the roof will make building interiors cooler and therefore more comfortable.
  • This will lessen the need for cooling and lower energy used for air-conditioning. This will help reduce climate change in the long run.

Polyurethane vs other insulation (R value per inch)

  • Polyethylene foam: 3
  • Rock wool roll: 3 - 3.85
  • Polyurethane foam (sprayed): 5.5 - 6.5

Advantages of using PU

  • 1 inch of PU = 2 inches of other materials. Insulation will be thinner and therefore lightweight. This means that for roof applications, structural load will be less.
  • There are different applications like spray (on top of roof ), boards, or sandwich panels.
  • Rigid, closed cell PU is not affected by water vapor, and it maintains its form.

Disadvantages of using PU

  • PU foam is combustible but contains fire retardant and fire rated B2, which means it will self extinguish.

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