Full Asphalt Shingle Roof Replacement in Markham
Tear-off, new underlayment, and architectural shingles on a two-storey detached home in Markham.
The Challenge
The homeowners of a two-storey detached property in Markham had noticed curling shingles, granule loss in the eavestroughs, and a soft spot near a bathroom vent stack. The original roof had reached the end of its service life, and with another Ontario winter approaching, they wanted the work done before freezing temperatures set in.
Aging Shingle System
The existing three-tab asphalt shingles were original to the home and showing widespread granule loss, cracking, and lifted edges along the south-facing slope where sun exposure was heaviest.
Hidden Deck Damage
Once tear-off began, our crew found soft, water-stained plywood decking near one of the plumbing vent stacks, a common result of a failed pipe boot that had been leaking slowly for some time.
Steep Roof Pitch
The home's steep roofline in Markham required additional fall-protection setup and careful staging to keep the crew safe and the property protected throughout the project.
How We Did It
Our team approached this Markham roof replacement in stages to keep the home protected and the schedule predictable for the homeowners.
- 1
Protection and Tear-Off
We laid tarps around the foundation and landscaping to catch debris, then stripped the old shingles and underlayment down to the plywood deck.
- 2
Deck Repair
The compromised plywood section near the vent stack was cut out and replaced with new sheathing, secured to code, so the new roof system would have a solid, dry base.
- 3
Ice and Water Shield and Underlayment
We installed self-adhering ice and water shield membrane along the eaves, valleys, and around every penetration, then covered the remaining deck with synthetic underlayment.
- 4
New Shingle Installation
Architectural asphalt shingles were installed with proper nailing patterns and starter strips, along with new pipe boots, flashing, and ridge capping.
- 5
Ventilation Check and Final Cleanup
We confirmed the attic's intake and exhaust ventilation was balanced, then did a full magnetic sweep of the yard and driveway before walking the homeowners through the finished roof.
The Result
The finished roof gives this Markham family a weathertight, code-compliant system built to handle everything from summer downpours to heavy snow loads.
A Sound, Repaired Deck
Replacing the damaged sheathing before shingling meant the new roof went down on a dry, solid base rather than being installed over a hidden problem.
Improved Curb Appeal
New architectural shingles gave the Markham home a cleaner, more dimensional look from the street compared to the flat, worn appearance of the old three-tab shingles.
Manufacturer-Backed Materials
The shingles, underlayment, and ice and water shield used are backed by manufacturer warranties, giving the homeowners documentation for their records.
Common Questions About Roof Replacements
How long does a full roof replacement take on a two-storey home?
Most two-storey detached homes in the Markham area can be fully re-roofed in one to a few days, depending on roof size, pitch, and whether deck repairs are needed.
Do you replace the plywood decking if it's damaged?
Yes. Any soft, rotted, or water-damaged sheathing is cut out and replaced before the new underlayment and shingles go down, since shingling over a compromised deck is not a lasting solution.
What is ice and water shield and why does it matter in Ontario?
It's a self-adhering waterproof membrane installed along eaves, valleys, and penetrations. It's especially important in our climate to help prevent water intrusion from ice damming during freeze-thaw cycles.
How do I request a quote for my Markham home?
Send us an email describing your roof's age, size, and any issues you've noticed, and we'll follow up to schedule an inspection.
Planning a Roof Replacement in Markham?
Email us your address and roof details and we'll get back to you with next steps.
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