The number on the shingle brochure looks reassuring. It is also easy to ask it to do a job it was never meant to do. A tested wind classification is useful product information; it does not promise that your finished roof will survive every storm without damage.
Your roof includes decking, fasteners, starter strips, field shingles, ridge pieces and flashing. Wind can exploit a weak connection in that assembly. The worthwhile buying question is: what product is being installed, how will this roof meet its instructions, and who handles a problem afterwards?
Put three documents beside the estimate
Ask for the product technical sheet, its current installation instructions and the Canadian warranty that will apply to your purchase. Keep the exact product name on the contract. A brochure describing an entire product family leaves too much room for a different bundle to arrive on delivery day.
| Document | What to check | What it does not establish |
|---|---|---|
| Product rating | Named test and exact shingle | Storm-proof performance of this house |
| Manufacturer warranty | Covered event, conditions and remedy | Every installation fault or interior loss |
| Workmanship agreement | Installer obligations and response | Automatic manufacturer approval |
IKO warranty centre separates limited product coverage from extended programmes and provides Canadian warranty documents. Read the applicable document rather than importing a headline from another country or another shingle series. Wind coverage, manufacturing-defect coverage and a roofer's workmanship promise answer different questions.
Make installation details visible
Ask the roofer to explain the required fastening pattern and fastening zone using the actual shingle instructions. More nails are not automatically a cure: location, penetration and the condition of the material receiving them matter. Let the specification determine the detail rather than choosing a nail count from a neighbour's invoice.
Discuss starter and ridge products, roof edges and any special instructions for the site's exposure. Ask what happens if weather prevents the shingles' adhesive strips from sealing promptly. Cold-weather application may need additional measures specified by the manufacturer; a warm afternoon forecast is not a written installation plan. Our guide to winter roof replacement covers that scheduling conversation.
The old roof coming off is your opportunity to see the substrate. An estimate should explain how damaged decking is documented and priced, and who approves replacement before covering it. Read roof quote section on hidden deck repairs if the quote simply says "wood extra." Fasteners cannot make unsound decking sound.
Compare what happens after a problem
Give both bidders the same scenario: a section lifts during a storm, water reaches the ceiling, and you need help immediately. Ask who receives the call, who makes the roof temporarily weather-tight, and which costs are dealt with under which agreement. Get the workmanship warranty separately from the shingle manufacturer's paperwork.
Look for registration requirements, transfer conditions if you sell, exclusions, claim documentation and how coverage changes with time. Do not assume a long headline term means every repair expense is paid throughout that period. Nor does a product warranty establish what your home insurer will cover after a storm.
A clear quote might identify the shingle, accessories, substrate allowance, installation specification and workmanship contact. A vague quote might offer only a brand name and an impressive wind number. You can compare the first quote even if it costs more. You cannot know what the second one includes yet.
Save a small roof record
Keep the signed scope, paid invoice, product labels, installation date and warranty documents together. Ask for progress photos of the deck, edges and fastening before those details disappear. The photos should identify your roof and the stage of work, rather than being a supplier's demonstration picture. Those labels also help investigate colour patches on a new roof, where the product and blend records matter more than a promise that the difference will fade.
After a storm, inspect from a safe position on the ground and photograph visible changes. Do not climb onto a wet or damaged slope to collect evidence. Arrange prompt assessment of missing pieces or water entry; preserving paperwork should never delay reasonable steps to prevent further damage.
A stronger shingle can be a sensible choice. The useful upgrade is the documented roof assembly and responsible installation that come with it. Keep the brochure, but make room in the folder for the less glamorous pages too.