Importance of Attic Ventilation

A roof space over an occupied interior must be properly ventilated. Proper ventilation can reduce the formation of harmful condensation and ice dams during the heating season.

Condensation if uncontrolled can cause serious problems. It can lead to the premature deterioration of roofing material, a loss in the thermal insulating value of the insulation and damage to interior finishes. Damp attics can provide an environment for the growth of mould that may be hazardous to the health of the occupants.

Day-to-day activity in the home produces a lot of moisture. The main sources of water vapour include cooking, baths, showers, laundry, etc.

Soffit vents, roof vents, ridge vents, gable vents, or any combination thereof will ventilate the roof space. All vents must be designed to prevent the entry of rain, snow and insects.

Vented soffit allows the air to flow easily through the roof space from all wind directions. Combining soffit ventilation with vents at the upper part of the roof is required for a balanced system. The passage of air from the soffit should not be restricted by insulation. When in the attic and you can’t see sunlight when looking at the eaves is a good indication the soffit vents are restricted by insulation. The insulation should be cleared off the soffit and baffles should be installed to maintain a space between the insulation and the underside of the deck.

Buchner Manufacturing produces various profiles of soffit ventilation. We also stock various roof vents. For assistance contact any of our locations. 

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