Insulation is pivotal in attic insulation a comfortable indoor climate while significantly impacting energy efficiency. However, achieving the best results from insulation requires a holistic approach. Insulation must be paired with proper ventilation to prevent stagnant air and moisture build-up. Ventilation solutions must complement insulation thermal properties to promote effective air flow and enhance energy performance.

The effectiveness of bulk insulation is determined by its thermal resistance which is measured in a material’s R value. A higher R value indicates a greater level of insulation effectiveness. However, the R value is not a measurement of thickness; for example, a thicker layer of one material may have a lower R-value than a thinner layer of another.

Exhaust Fans and Attic Insulation: Do They Work Together or Against Each Other?

Reflective insulation primarily resists radiant heat flow through its ability to reflect and disperse sunlight and is typically made from shiny aluminium foil laminated onto paper or plastic (also known as “sarking”). It is installed in ceilings with the foil facing inwards (recommended in cooler climates), which increases condensation risk and requires a water-resistant vapor control layer to be installed adjacent to it.

Mineral fibre insulation consists of fibreglass, stone wool, cellulose or a combination of these materials and is used in walls, roofs and floors. It is typically installed as loose fill or blown in using mechanical equipment and has a high R-value per bag, although it does not provide the same level of thermal resistance as sprayed in foam insulation products.

“Spray Foam Insulation Phoenix
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“Phoenix, AZ 85015
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(602)825-3298
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