Engineered to Perform. Designed to Protect. Built to Endure.
Start ProjectAsphalt roofing is a practical, versatile choice for Ottawa homes, combining proven performance, a wide range of styles and straightforward maintenance. Properly designed and installed, it can provide reliable protection through snow, wind, moisture and freeze-thaw cycles.
Big City Roofing designs and installs complete asphalt roofing systems, selecting the right shingles, underlayment, eave protection, flashing, ventilation and roof decking for Ottawa’s climate.
Why it matters?
Asphalt roofing offers durability, design flexibility and easy maintenance. A properly installed roofing system helps protect against snow, moisture and freeze-thaw cycles.
It can last up to 50 years*, depending on materials, installation, ventilation, exposure and maintenance.
Core benefits
Transparent workflow
We make asphalt roofing replacement clear, organized, and straightforward.
We inspect the existing roof and discuss the right options.
Old shingles are carefully removed and properly disposed of.
We check the decking and complete necessary repairs.
Ice, water protection and underlayment are installed where required.
New shingles are installed according to manufacturer specifications and applicable building standards.
We inspect the completed roof, clean the site and ensure the work meets our quality standards.
The Big City Standard
Our approach to asphalt roofing is built around careful planning, quality installation, and attention to the details that support long-term performance. We focus on quality, clear communication, and reliable workmanship from assessment to final cleanup.
We understand the details that affect asphalt roof performance, from ventilation and flashing to underlayment and shingle installation.
We explain the recommended work and provide clear estimates without hidden costs.
We use reliable asphalt shingles and roofing components selected for durability and Ottawa climate.
You know what to expect at every stage, from the initial assessment to project completion.
We protect your property, maintain a safe worksite, and complete thorough cleanup after the project.
Our goal is a properly installed roofing system that provides dependable protection for years to come.
Enter your phone number to book a site inspection or get expert advice on your exterior.
A good asphalt roofing system is more than a layer of shingles. Its performance depends on how the shingles, underlayment, ice and water protection, flashing, ventilation and roof decking work together as one system. This is especially important in Ottawa, where snow, moisture, wind and freeze-thaw cycles can expose weaknesses in roof construction.
Understanding these components helps homeowners compare asphalt roofing options, recognize when repairs may be enough, and know what to look for when replacement is needed.
A properly installed roof works as a complete system. Modern architectural shingles sit above several protective layers designed to manage water and protect the roof deck.
A typical system may include:
These details matter in Ottawa because winter conditions can expose weaknesses that remain unnoticed during dry weather. The National Research Council of Canada (NRC) recognizes self-adhering polymer-modified bituminous membranes for ice-dam protection.
Asphalt shingle roofing is not a single product category. Shingles differ in construction, appearance, weather resistance and warranty terms. Big City Roofing installs systems from GAF, BP and Owens Corning, with options selected according to the property, budget, appearance and desired warranty coverage.
When comparing asphalt roofing shingles, look beyond colour and package labels. Ask about:
Roof age alone does not determine whether replacement is necessary. A professional assessment should consider the condition of the shingles and the layers beneath them.
Warning signs include:
Snow, freeze-thaw cycles, wind-driven rain and ice dams place specific demands on a roofing system. NRC guidance notes that roof configuration can affect where snow accumulates. Natural Resources Canada also explains how heat loss from the attic can contribute to ice dam formation at colder roof edges.
That makes details such as eave protection, flashing, drainage and ventilation especially important. GAF also identifies leak barriers and roof-deck protection as components of a complete asphalt roofing system.
With asphalt roofing services from Big City Roofing, the process starts with an assessment rather than a one-size-fits-all product recommendation. The company provides free estimates, an on-site roof and attic assessment, photos and a written quote. A dedicated project manager reviews the technical scope and materials before installation.
The baseline installation standard includes synthetic underlayment, ice and water protection in critical areas, drip edge and a full ventilation assessment. After installation, debris is removed and the property receives a magnetic nail sweep.
Big City Roofing also provides warranty documentation, including a stated 10-year workmanship warranty and material warranties of up to 50 years, depending on the selected system.
Homeowners comparing asphalt shingle roofing options in Ottawa should consider more than appearance. The complete system, installation details and climate-specific protection all affect long-term performance. Based in Ottawa, Big City Roofing serves homeowners and businesses throughout Ottawa and the Ottawa Valley.
If your shingles are aging, leaking or showing signs of winter damage, Big City Roofing can assess the roof and explain the practical options.
Request a free estimate and receive a documented plan for your property.
Common inquiries
Everything you need to know about our process, materials, and standards before we start.
More answers
Get a professional assessment and a detailed quote for your project. No strings attached
Clear answers to your exterior questions. Leave your details, and we'll help you define the scope of your future project.
Your feedback helps us maintain our professional standards and assists other homeowners in Ottawa to make informed decisions
Precision roofing and exterior solutions. No shortcuts, no hidden fees just a clear scope of work and professional execution
