Frequently Asked Questions About Roofing

Yes. Every element in your roofing system comes with manufacturer-approved guidelines and specifications. To uphold the manufacturer warranties associated with the roofing system, any installation or maintenance work must follow these guidelines and specifications. Failure to do so can result in voiding your warranty. At Global One Roofing, we strictly adhere to all instructions and guidelines to make sure that you are fully covered by all applicable warranties.

Yes. Global One Roofing is a fully licensed local roofing contractor with a 2-million-dollar liability insurance policy and WSIB coverage. We stand by our work, and you can be sure you are getting the best possible roofing service.

Contrary to a common misconception, a roof does not necessarily last as long as its warranty. Depending on the quality of materials used, a roof can last anywhere from 20 to 50 years. However, you must view your roof not just as the shingles you see but rather as a complete roofing system that includes a deck, proper underlayment, insulation, flashings and attic ventilation. If you only replace your roof shingles, the chance that you will encounter more problems down the road is likely, and your roof will eventually fail sooner than it should.

In most cases we attend to, property owners only discover problems with their roof systems after a leak or serious damage. However, by this time, it may be too late, and the repair job might cost more than it would have if the problem were discovered earlier.

Therefore, regular inspections can help you uncover the following visible signs before they become serious problems.

  • Missing, cracked or warped shingles
  • Loose seams and deteriorated flashings
  • Accumulation of surface granules in the gutters and downspouts
  • Cracked paint indoors
  • Peeling wallpaper
  • Discoloured plasterboards

Not always. There are many reasons why a roof may be leaking. It could be that a section of the roof is damaged or that flashings have come loose. In these cases, you do not necessarily need a complete replacement. However, a complete roof failure due to improper choice of materials, faulty installation, or the roof system being inappropriate for the building is generally irreversible and might require a complete roof replacement.

Ice dams are generally formed by the continual thawing and refreezing of melting snow due to weather conditions. During this time, large masses of ice develop on the roof as snow melts. The melted water flows under the snow above and refreezes at the roof’s edge. As additional snow melts, it forms pools of water that gradually back up the roof, often getting under the shingles and leaking into the house.

To avoid ice dams:

  • Install proper waterproofing membranes on eaves and in valleys to prevent water from penetrating the roof.
  • Improve the attic insulation to keep the attic cool and reduce escaping heat that might melt the snow
  • Ensure that your eaves or gutters are lower than the roof’s slope to allow ice and snow to slide off.

Ventilation plays a crucial part in the functionality and longevity of a shingle. Temperature fluctuations from summer to winter accelerate aging on your asphalt roofing shingles. However, proper air circulation reduces the chances of leaking, distortion, blistering, wood rotting, curling, wet insulation and other potential problems regardless of the weather outside.

Additionally, you need to prove adequate ventilation in order to validate the manufacturer’s warranty on the shingles. Locally, the National Building Code prescribes the minimum requirements that must be observed.

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