Lethbridge’s Frequently Asked Questions about Polyurethane Spray Foam

At Reliable Urethane Applicators & Painters Ltd, we would like to present to you some of the most commonly asked questions we receive regarding our insulation services. If you have any questions that aren't completely answered in this section, please do not hesitate to give us a call!


How is polyurethane foam applied?

Polyurethane foam is sprayed on as a bubbly liquid substance which quickly expands to fill the cracks and crevices that other insulation materials can’t reach.


What about other insulation materials?

When comparing polyurethane foam to other insulators, the most important factor is the R-Value, which is its resistance to heat loss; the higher the number, the better the insulation properties. Here is a quick run-down of the R-Values of the most common insulation materials:


  • Polyurethane, 2lb Variety (7.1 R-Value)
  • Styrofoam (5.0 R-Value)
  • Urethane, 1/2lb Variety (3.8 R-Value)
  • Expanded Polystyrene (3.5 R-Value)
  • Fibreglass (3.4 R-Value)


How long does it last?

A polyurethane foam application has shown to last upwards of 25 years without any decrease in performance. Beyond that time, a re-application may be necessary in order to regain the same energy savings benefits.


What is the cost?

Although the cost of installation is higher than many insulation materials, polyurethane foam can reduce your energy bills by up to 50%, meaning the cost of spraying polyurethane foam is higher than insulating with some other insulation products, however the cost will actually be 30% less when considering your energy savings for heating and cooling. Heating and cooling will drop dramatically, reducing energy bills by as much as 50%.


Is polyurethane foam safe?

When used correctly, polyurethane foam is a highly safe material, with only 1/100th of the off-gas limits set forth by Canada’s regulatory agencies. Although, polyurethane foam should always be handled with protective gloves as it can irritate the skin and eyes, especially when under combustion.

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