The roof replacement process can feel overwhelming if you’ve never gone through it before. Whether you’re upgrading due to age, damage, or aesthetics, knowing what to expect helps you plan, budget, and feel confident every step of the way.
At Gateway Exteriors, we’ve completed hundreds of successful roof replacements across Hamilton and surrounding areas. Here’s our step-by-step guide to what really happens during the roof replacement process.
1. Initial Inspection and Estimate
Many factors come into play when calculating roof replacement costs. They include the type of material you Every roof replacement starts with a thorough inspection. A professional contractor will assess your existing roof, identify any damage, and take accurate measurements.
You’ll receive a detailed estimate that includes:
- Roofing material options
- Labour and installation costs
- Removal and disposal fees
- Recommended upgrades (e.g., ventilation, underlayment, flashing)
Tip: Be sure to ask about warranties and financing options.
After the assessment, you’ll receive a detailed estimate that covers materials, labour, upgrades, and disposal. Get your free estimate now.
2. Scheduling the Job
Once you approve the estimate, your contractor will schedule the project. Depending on weather, material availability, and crew size, you can usually expect the job to be scheduled within 1–3 weeks.
At Gateway Exteriors, we always provide clear communication about timelines, weather considerations, and what to expect on the installation day.
3. Materials Arrive With the Crew
On the day of your roof replacement, our crew arrives with everything needed — shingles, underlayment, vents, and more. This keeps your property clear and avoids unnecessary delivery disruptions in advance.
Tip: We recommend moving vehicles out of the driveway to make room for equipment and access.
4. Removing the Old Roof
The crew begins by carefully tearing off your old roofing materials. This is the noisiest part of the process, but it’s a necessary step to ensure a solid foundation.
We take care to:
- Protect your landscaping and siding
- Safely remove and discard all old materials
- Inspect the roof deck for any hidden damage
If we find issues like rotten decking, we’ll let you know immediately before proceeding.
5. Roof Deck Preparation
Before installing new materials, the crew prepares your roof deck. This includes:
- Replacing any damaged wood
- Installing protective underlayment
- Adding drip edge and flashing where needed
Each layer plays a critical role in keeping your home dry, insulated, and protected from Ontario’s unpredictable weather.
6. Installing the New Roof
Now the transformation begins. Our roofing team will:
- Lay starter shingles
- Install the main roofing system (asphalt, metal, etc.)
- Add ridge caps, vents, and flashing
- Ensure all seams and penetrations are sealed
Most roof replacements are completed in 1–2 days, depending on size and complexity.
7. Cleanup and Final Inspection
Once the installation is complete, our team performs a full cleanup and inspection. That includes:
- Collecting all leftover materials
- Running magnetic sweepers to find stray nails
- Reviewing all work for quality and compliance
We leave your property clean, safe, and looking better than when we arrived.
Warranty and Aftercare
With your new roof in place, we’ll provide:
- Manufacturer warranties on materials
- Workmanship warranties on installation
- Guidance on how to care for and maintain your new roof
We also keep a record of your project for future reference and support.
If you’re comparing materials or curious about system warranties, the GAF Roofing Guide for Homeowners offers helpful insights into what to expect from a roofing project.
Frequently Asked Questions
How long does a roof replacement process take?
Most homes are completed in 1–2 days, weather permitting.
Do I need to leave my home during the replacement?
No — you can stay home, but expect noise and vibrations.
What if it rains during the project?
We monitor weather closely and will only remove what we can cover the same day.
Need a Roof Replacement? Contact Gateway Exteriors in Hamilton, ON
Gateway Exteriors is proud to serve homeowners across Hamilton, Burlington, Ancaster, Stoney Creek, and surrounding areas. We combine high-quality materials, expert workmanship, and honest service to give your home the protection it deserves.
If you’re planning a project, knowing the roof replacement process in advance will help you avoid stress and stay on budget.
Contact us today for a free, no-obligation estimate and expert advice.
Click here to book your free quote
