The Importance of Roof Ventilation

Qualified Roofers Know the Value of Good Roof Ventilation for Toronto Homes

Roof Ventilation

When a roof is functioning acceptably, it will protect/safeguard a structure, its contents, and its occupants from the effects of the various and extreme weather conditions seen in Toronto and its surrounding area.  It therefore stands to reason that proper installation by roofing contractors plays a critical role in ensuring that roofs perform as expected.

For the casual observer, proper residential roof installation may simply entail setting the correct pitch or slope and securely fastening the shingles.  But another highly important consideration for roofers in Toronto, and one that will likely not be very top-of-mind for homeowners, is ensuring that there is sufficiently adequate roof and attic ventilation.

There are several problems or issues that can occur throughout the different seasons in Toronto due to inadequate roof or attic ventilation, including:

  • Shingle deterioration (blistering/melting)
  • Mold and mildew formation in the attic
  • Wood rot and delaminated sheathing
  • Frost formation in the attic
  • Development of ice dams

In order to circumvent or avoid such types of damage, and potentially expensive repairs, roofing contractors like Triumph Roofing will take some specific steps or precautions when installing or replacing a roof.  The actions taken by these roofers may consist of:

  • Installing vents at both higher and lower positions on the roof
    • High vents will act as exhaust outlets; low vents provide air intake
    • Lower vents are often located in the soffits (or perhaps the fascia)
    • The ratio of intake to exhaust vents should be an even 50/50 split
  • Making certain that the higher (exhaust) vents are all the same style
    • Options include: ridge, box, turbine, or powered vents
    • Mixing styles can be detrimental to proper air conduction
  • For turbine vents, installation should be in a perfectly level position
    • If installed on an angle or slant, turbine vents will not revolve
    • These vents should only be installed if the attic has been air-sealed
  • Increasing the number of vents if switching from wood to aluminum soffits
    • Such venting should be roughly 1 sq. ft. per 300 sq. ft. of soffit

When roofers ensure than a roof and attic have adequate and appropriate ventilation, homeowners in Toronto will realize several benefits in addition to preventing unwanted and unnecessary repair costs.  These benefits include:

  • Reduced moisture build-up – inhibits water damage to framing, sheathing, insulation
  • Abiding by stipulations in manufacturer warranties with respect to any shingle issues
  • Moderating the temperature of the home in the summer and lowering cooling costs
  • Keeping roof colder in Toronto winters – curtails formation of condensation/ice dams
  • Helping to preserve overall structural integrity and normal life expectancy of the roof

Although perhaps not as conspicuous as other roof components, attic ventilation must be given the same amount of care and attention from Toronto roofing contractors as the more visible roof aspects such as:

  • Shingles
  • Eavestroughing
  • Soffits and fascia
  • Chimneys/masonry

For further information on the extensive roofing services provided to Toronto property owners by the contractors from Triumph Roofing, including their expertise in proper attic ventilation, please click here.

If you are experiencing some of the seasonal problems described above with the roof of your Toronto home, it may be due to poor roof or attic ventilation.  Our roofers will conduct a complete inspection to determine the root cause of the problem and provide recommendations to resolve the situation.  Call the roofing contractors from Triumph Roofing in Toronto today at 416-534-8877 or contact us to arrange a professional consultation as soon as possible.

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