Shingle Roof Replacement and Repair
GAF CERTIFIED ROOFING CONTRACTOR • 15+ YEARS GTA EXPERIENCE
YS Roofing installs and replaces asphalt shingle roofing systems across Toronto and the GTA as a GAF Certified Residential Roofing Contractor, treating shingle selection, underlayment, and ventilation as one system rather than shingles alone. Every job starts with a free, on-site estimate and a written proposal before work begins.
Signs Your Shingle System Needs Attention
■ Cupping & Curling Shingles
Shingles that are cupping, curling, or cracking well before the manufacturer’s expected service life, which often points to a ventilation problem rather than a defective batchs
■ Early Shingle Wear
Granules collecting in the eavestrough well beyond what is normal after a roof’s first year or two, signalling the shingles are shedding their protective coating early
■ Colour or Wear Between Shingle Courses
Noticeably uneven colour or wear between shingle courses, which can happen when a roof was patched with a different shingle line or lot over time
■ Considerations for Roof Replacement
A roof with only one layer of shingles that is now due for replacement, which is the point where a heavier architectural shingle can be considered rather than a straight swap
■ Shingle Lifting or Loosening
Visible movement or lifting at shingle tabs in wind, which points to a fastening or sealant issue specific to the shingle installation rather than the roof deck itself
What Is Included
- A choice between 3-tab and architectural (laminate) shingles, with architectural shingles offering a heavier profile and typically a longer manufacturer warranty on materials
- Synthetic underlayment installed under the shingle field, replacing older felt underlayment with a more tear-resistant, consistent moisture barrier
- Ice and water shield at eaves, valleys, and penetrations, installed to meet Ontario Building Code requirements for the region’s winter conditions
- Ridge and soffit ventilation components installed or corrected as part of the shingle system, since intake and exhaust airflow directly affect how long the shingles last
- Installation by a GAF Certified Residential Roofing Contractor, which is what makes the project eligible for GAF’s enhanced manufacturer warranty coverage on qualifying installations
How the Job Runs
- Consultation. We inspect the current shingle system, check attic ventilation, and go through shingle line and colour options.
- Detailed Proposal. A written scope covering shingle type, underlayment, ventilation components, and price, fixed before work starts.
- Professional Installation. The crew installs the underlayment, ice and water shield, ventilation components, and shingles as a complete system to manufacturer specification.
- Final Inspection. A walk-through confirming the shingle installation, attic ventilation, and site cleanup before the crew leaves
What Most Homeowners Get Wrong
The most common mistake is choosing a shingle based on colour or price alone and treating underlayment and ventilation as an afterthought, when the shingle is only one part of a warrantied system. A 3-tab shingle installed with poor attic ventilation can fail well before a heavier architectural shingle installed correctly, regardless of what either product’s rated lifespan claims. A second mistake is assuming a manufacturer’s 50-year or Lifetime marketing term describes how long the roof will last in practice; that figure describes the warranty against material defects, not a guaranteed service life under GTA weather. A third is skipping certified installation to save on labour, which can affect eligibility for a manufacturer’s enhanced warranty coverage even when the shingles themselves are a premium product.
GTA Conditions That Matter
Asphalt shingles in the GTA lose granules and become brittle mainly from years of direct sun exposure, and freeze-thaw cycling through the winter compounds that wear by repeatedly expanding and contracting the shingle mat. Wind resistance rating matters more here than in milder climates, since spring wind storms are a regular source of shingle lift and blow-off calls across the region, and manufacturer-specified fastening patterns are what keep a shingle system within its rated wind resistance. Attic ventilation also works harder through a GTA winter, since the swing between a heated attic space and a cold roof deck is what drives ice damming at the eaves.
Service Areas
YS Roofing provides shingle roof replacement and repair across
Why YS Roofing
YS Roofing is based in Markham and has completed more than 1,000 residential roofing projects across Toronto and the GTA, backed by a team of 20 or more. YS Roofing is a GAF Certified Residential Roofing Contractor, a factory certification that requires installers to meet GAF’s training and installation standards and is what makes a shingle system eligible for GAF’s enhanced manufacturer warranty coverage. Every estimate is free, and financing is available for larger jobs. A written proposal before tear-off and a final inspection before the crew leaves are standard on every shingle roof installation.
FAQ
What is the difference between 3-tab and architectural shingles?
A 3-tab shingle is flat and uniform in profile, generally the more economical option. An architectural, or laminate, shingle is built from multiple layers for a heavier, dimensional look, and typically carries a longer manufacturer warranty on materials. We will go through both options and their trade-offs during the estimate.
Does a GAF Certified installer matter for my shingle warranty?
Yes. Enhanced manufacturer warranty coverage on qualifying GAF shingle systems is generally only available when the installation is completed by a GAF Certified contractor. Installing the same shingles through an uncertified installer typically means falling back to the manufacturer’s standard material-only warranty.
How long do asphalt shingles last in Ontario?
Asphalt shingle roofs typically last 20 to 25 years depending on the material grade, installation quality, and attic ventilation, though GTA freeze-thaw cycles can shorten that on a poorly ventilated roof. An inspection is the reliable way to tell where your specific roof stands.
What is the difference between a 50-year shingle warranty and a 50-year roof?
A manufacturer’s 50-year or Lifetime warranty term covers material defects in the shingle itself, not a promise that the roof will last 50 years in service. Real-world lifespan depends heavily on installation quality, attic ventilation, and local weather, which is why the practical range for the GTA is closer to 20 to 25 years.
Can shingles be installed in the winter?
Shingle installation can proceed through most of the GTA winter, weather and site conditions permitting. Shingle seal strips need warmth to bond, so crews hand-seal each tab during cold-weather installs rather than relying on sun to activate the adhesive.
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What Happens Next
Book a free, on-site estimate and we will inspect your current shingle system, walk you through shingle and ventilation options, and provide a written proposal before any work starts. Call 647-667-1367, or contact us to get a quote.