Difference in Cost for New or Existing Homes
Installing spray foam insulation in the new home is cheaper and efficient than in old homes with old insulation in place. In new homes, contractors can come up with the best insulation design to deal with heat transfer, sound and utility cost, unlike older homes where they need to remove the old insulation among other overhead costs.
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Benefits and Disadvantages of Spray Foam Insulation
Benefits include lowering utility cost because it blocks cold and heat from outside. It protects against moisture which can lead to the development of mold and mildew. Spray foam can act as noise reduction as well.
Some of the drawbacks of spray foam insulation include causing health problems such as irritation in the eye, respiratory tracts and gastrointestinal. Direct contact can lead to inflammation and rashes. It has been linked to some cases of hypersensitivity pneumonitis which can cause: Dry cough, chest tightness, fever, muscle aches and headaches.
Most manufacturers have addressed the problems caused by isocyanates hence most spray foam insulation in the market are now safe.