Proper Roof Ventilation Promotes Health

Whether you are building, replacing or upgrading a roofing system, proper ventilation will maximize the life of your roofing materials and maintain the integrity of your roof structure over the long run.

Lack of ventilation on a roof will lead to a build-up of moisture that will cause damage from the inside out. Preliminary indications of moisture problems for roofing systems may include the membrane losing attachment and blistering. If the damage progresses, rafters will rot, fasteners will rust, sheeting will saturate, and the insulation of your roof will be ruined. From there, it’s a slippery slope downhill to water damaged ceilings and walls and the growth of mold which can lead to serious health issues.

Obviously, the first course of action is to keep moisture out of the roofing system. Critical elements in this effort are regular inspections that include checks of seams, flashings and any penetrations. Exterior checks are important because in many cases, problems with installation or materials can lead to water entering a roofing system from the outside.

Preventive maintenance may seem like an extra cost up front, but the rewards are abundant. A routine check can extend the roof’s lifespan of 12 to 25 years by 50 to 100 percent. It is well worth the investment. On our visits, our experienced professionals will first conduct a visual exam in the fall and early spring and several checks to make sure that you roof is in good condition. Contact Tony William Roofing and Exteriors today to speak with one of our roofing experts. (403) 454-1366



With the exception of commercial and flat roof projects, we are currently quoting residential projects to commence in 2021. Thank you for your understanding. 

Tony William Roofing & Exteriors Inc.
 Suite 300 - 160 Quarry Park Blvd SE 
Calgary, AB T2C 3G3 Open M - F | 8:00am - 4:00pm 


  • Company was recommended by a neighbor. I had estimates by two companies.Tony Williams was well under Gutter Doctor. Work was completed when promised. Crew was friendly and efficient. I would certainly recommend this company.

    David Ritch

    Google Review

  • We were very impressed with the service and workmanship Tony Williams Roofing & Exteriors provided us this past spring. We will be contacting them for any further renovation project we may have in the future.

    Rick in Calgary

  • This company came in as the best value for our money, they were on time, professional and answered any questions we had. The workers were great, cleaned up after and were done on time. Was very happy with this company!

    Kara & Brad

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Tony William Roofing & Exteriors Inc.
Suite 300 - 160 Quarry Park Blvd SE,
Calgary, AB T2C 3G3

(403) 454-1366

Calgary | Airdrie | Langdon | Okotoks

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