Insulation

Attic Insulation

Attic is one of the most important component of building envelope which separates the indoors from outdoors & has to be insulated to minimize the loss of heat transfer from indoor to outdoor. Proper Insulation in the attic and walls is essential to saving up to 38% of your heating and cooling bill. You will notice a difference in your Hydro bill immediately.

Insulation RSI/R-value’s

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Loose Fill

  • Cellulose
  • Glass fibre

Cellulose

  • High R-Value per inch
  • May settle after installation
  • Most have high recycled content (~85%)
  • To protect against fire hazards, cellulose insulation is heavily treated with fire-retardant chemicals prior to installation (newer material is far better)
  • Older cellulose had Formaldehyde in the inks which is a mild Allergen

Glass Fibre

  • Good R-value per inch
  • May settle after installation
  • Glass fibre contains up to 60% recycled glass materials
  • Low Flammability

Air Flow to Attic

  • Prevent loose-fill insulation from blocking the soffit vents to maintain air flow from the vents into the attic or roof space
  • Minimize air flow into the insulation near the soffit vents to maintain the thermal performance of the material

Where soffit venting is used, measures shall be taken

a) to prevent loose-fill insulation from blocking the soffit vents and to maintain an open path for circulation of air from the vents into the attic or roof space, and

b) to minimize air flow into the loose-fill insulation near the soffit vents to maintain the thermal performance of the material.


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