While repairing your roof is never convenient, it pales in comparison to the cost and inconvenience that comes with neglecting its upkeep. Direct sunlight, hail, wind, acid rain, ice and snow will affect the condition of your home’s roof over time and affect its ability to shelter you from the elements. The older a roof is, the more sensitive it becomes to these factors. Many people are surprised to learn the extent of their roof damage, especially when their shingles appear to look fine.
Some contractors provide a basic roof inspection, which consists of examining the exterior of the roof (sometimes only from street level) and basic components such as flashings. While this is necessary, a more thorough inspection can help identify areas of concern that could potentially lead to further (and more costly) damage.
Exterior Roof Inspection
- Severely blistered, curled or split shingles.
- Loose or missing shingles.
- Loose nails.
- Exposed nails.
- Broken or loose shingles at the ridge and hip lines.
- Signs of missing caulk to seal flashing.
- Rusty or corroded metal flashing.
- Damaged or missing flashing.
- Sagging on the ridges.
- Broken seals on shingles.
Interior Roof Inspection
- Cracks on roof sheathing.
- Measure and calculate proper attic ventilation.
- Sagging decking (between rafters).
- Outside light coming through.
- Attic intake vents for proper ventilation.
- Bathroom and kitchen exhaust fans for proper ventilation.
- Leaks around vents, chimneys and other holes to the outside.
This is not a complete checklist but rather recommendations. Please consult a professional roof inspector to complete a proper roof inspection. Do not attempt to complete the checklist yourself.
Selecting Shingles
When purchasing asphalt shingles, there are several factors to consider. First, there are two types of basic asphalt shingles: organic and architectural (fibreglass).
Organic shingles:
- Base is made of organic felt saturated with asphalt
- More flexible than fibreglass shingles
- Easier to install in cold weather
- Tear resistant
- Heavier and impervious to strong winds
- Holds up to fluctuations in temperature
- Lower cost
Architectural (fibreglass) shingles:
- Thicker base layer of asphalt-saturated fiberglass (two layers of asphalt with a fibreglass mat in centre)
- Larger than average in size, decreasing the number of materials needed and helps enhance appearance
- Lightweight and flexible
- Improved protection against water infiltration and ice damming
- Higher wind resistance
- Fire resistant
- Longer lifespan
Mineral granules on the surface of the shingle are what get exposed to the elements. Granules embedded into the weather surfaces of shingles are made from fine-grain, opaque, crushed rock particles. Opaque granules don’t allow light to pass through. In addition to protecting the shingle from harmful UV rays and keeping the roof cool, the granules come in a variety of colours, which will determine the style and look of the roof.
Shingles come with heat-activated adhesive tabs and must be nailed and not stapled. This will ensure they are more resistant to winds.
The variety of asphalt shingles you choose will come down to your budget. Visit your local Co-op Home Centre today for in-store assistance, a great selection and even greater prices!
