Specialized roofing services designed for St Catharines' unique Southern Ontario climate patterns and 100cm annual snowfall. Our solutions protect heritage homes and modern builds alike while preserving the distinct character of the Garden City.
Lifetime Warranty
Workmanship Guaranteed
24/7 Emergency
Rapid Response Teams
0% Financing
Flexible Payment Plans
For 8 years, we've been St Catharines's trusted roofing specialists. Our 1,200+ completed projects demonstrate our commitment to quality, from neighborhood to neighborhood.
St Catharines faces unique roofing challenges with its position between Lake Ontario and the Niagara Escarpment, creating varied weather patterns across neighborhoods from the historic Downtown to the East Side. Our 100cm annual snowfall, combined with lake effect moisture and summer heat waves, demands specialized roofing solutions. From heritage homes in the North End to modern developments in the South End, each St Catharines neighborhood requires tailored approaches to roofing installation and maintenance.
Choose from our comprehensive range of roofing solutions, each engineered for Ontario's extreme weather conditions and backed by industry-leading warranties.

Engineered for St Catharines' Four-Season Protection
Custom-designed for the unique weather patterns between Lake Ontario and the Niagara Escarpment. These premium shingles combine historic charm with modern durability, perfect for both heritage homes and contemporary builds.
Enhanced grip technology for harsh Niagara winters
Lake effect moisture resistance with advanced ventilation
Heritage color profiles matching Downtown architecture
Double-reinforced ice dam prevention system
UV-resistant coating for Port Dalhousie summer heat
Enhanced drainage channels for lake effect precipitation
Available Colors:
Starting from $18,563 - $24,132 (avg 2,000 sq.ft roof)
* Pricing includes complete tear-off, disposal, deck inspection, underlayment, ventilation, and warranty registration. Exact pricing depends on roof size, pitch, and accessibility.
Historic Downtown homes, Port Dalhousie properties, and modern North End residences
Schedule your free roof inspection online or contact us for a detailed proposal with material samples.
A quality roof is more than just shingles. Learn about the critical components that protect your St Catharines home from Ontario's extreme weather.

3D Exploded View: See every layer of a complete roofing system
Our reinforced roof decking systems are engineered to support St Catharines' substantial snow loads while preventing moisture penetration. The 5/8-inch deck panels feature enhanced structural support for the region's 100cm annual snowfall and varying temperature conditions.
Premium ice and water shield designed for St Catharines' freeze-thaw cycles, providing superior protection against ice dams and backed-up snow melt. Specialized adhesive maintains effectiveness even during extreme Niagara region temperature fluctuations.
Synthetic underlayment rated for St Catharines' humidity levels and seasonal temperature variations. Features enhanced grip surface for installer safety during Niagara region wind conditions and superior water resistance.
Heavy-duty starter strips designed to resist St Catharines' lake effect winds and protect against uplift along eaves and rakes. Enhanced adhesive strips ensure maximum wind resistance in exposed Niagara peninsula locations.
Impact-resistant shingles rated for St Catharines' varied weather conditions, featuring enhanced granule adhesion for extended life. Engineered to withstand both summer heat and winter freeze-thaw cycles common to the Niagara region.
High-profile ridge caps designed for maximum ventilation in St Catharines' humid climate while maintaining a weather-tight seal. Enhanced width provides superior protection against wind-driven snow and rain.
Balanced ventilation systems optimized for St Catharines' temperature extremes, preventing ice dam formation in winter and reducing cooling costs in summer. Designed to handle Niagara region humidity levels effectively.
Heavy-gauge aluminum flashing with additional ice dam protection for St Catharines' snowy conditions. Features extended overlap areas and superior sealants to prevent water infiltration during freeze-thaw cycles.



Every roof replacement follows our proven process designed to protect your property and deliver lasting results.

3D Cross-Section: Complete roofing system showing all protective layers
Our team begins with a thorough inspection of your St Catharines property, checking for unique structural considerations and obtaining necessary permits from the City Building Department at 50 Church Street. We assess potential challenges from Lake Ontario effects and create a detailed project timeline.
We coordinate material delivery to any St Catharines neighborhood, from Port Dalhousie to Merritton, ensuring minimal disruption to narrow heritage streets. Our trucks are equipped to handle steep driveways common in the Niagara Escarpment areas of the city.
Weather monitoring is crucial in St Catharines, so we schedule tear-offs during optimal conditions. We protect surrounding gardens and vineyards from debris while ensuring the roof deck is completely clean and structurally sound before proceeding.
Given St Catharines' proximity to Lake Ontario and winter lake-effect snow, we install premium ice and water shields along eaves, valleys, and vulnerable areas. This creates a crucial barrier against ice dams common in Ontario winters.
We use high-wind rated shingles suitable for St Catharines' lake-effect weather patterns. Installation techniques account for predominant wind directions off Lake Ontario and potential snow loads during harsh Niagara winters.
Proper ventilation is critical in St Catharines' humid climate. We install ridge vents and ensure adequate intake ventilation to manage moisture from lake effects and prevent extreme attic temperatures common in Southern Ontario.
Our final inspection adheres to St Catharines Building Standards and Ontario Building Code requirements. We verify all flashing, particularly around chimneys and valleys, ensuring protection against severe lake-effect weather conditions.
From lake-effect snow to summer heat waves, St Catharines roofs face unique challenges. Here's how we engineer protection.

Balanced attic ventilation prevents ice dams, extends roof life, and reduces energy costs
The Challenge:
St Catharines faces significant ice dam risks due to lake-effect snow accumulation and freeze-thaw cycles. The city's proximity to Lake Ontario creates unique conditions where heavy snowfall can quickly build up on roofs, leading to dangerous ice dam formation.
Our Solution:
We implement a comprehensive ice dam prevention system using high-grade ice and water shields, proper insulation, and advanced ventilation solutions specifically designed for Niagara region winters. This includes extended eave protection and sealed roof deck systems.
The Challenge:
Lake Ontario's influence creates strong wind patterns in St Catharines, particularly during spring and fall storms. Gusts can exceed 90 km/h, potentially lifting and damaging improperly installed shingles, especially in exposed areas near the lake.
Our Solution:
We utilize high-wind rated shingles with enhanced nailing patterns and starter strips. Our installation methods exceed standard wind resistance requirements, using additional fasteners and specialized sealing techniques for lake-effect prone areas.
The Challenge:
St Catharines experiences extreme temperature fluctuations, from summer highs above 30°C to winter lows below -20°C. These variations, combined with lake-effect weather, can cause significant stress on roofing materials.
Our Solution:
Our roofing systems use temperature-resistant materials designed for Southern Ontario climate extremes. We incorporate expansion joints where necessary and ensure proper attic insulation and ventilation to minimize temperature-related stress.
The Challenge:
High humidity levels from Lake Ontario, combined with seasonal rainfall and snow melt, create significant moisture challenges for St Catharines homes. This can lead to condensation issues and potential mold growth in poorly ventilated attics.
Our Solution:
We implement advanced moisture management systems including proper vapor barriers, strategic ventilation placement, and moisture-resistant underlayment. Our solution includes balanced air flow systems specifically designed for Niagara region humidity levels.
Comprehensive Protection
Every roof installation includes dual warranty coverage: our lifetime workmanship guarantee plus manufacturer product warranties registered in your name.
Protecting Niagara homeowners with comprehensive workmanship coverage that spans the lifetime of your roof. Our local expertise in handling St Catharines' unique weather patterns, from lake effect snow to summer storms, ensures your investment is protected. Includes detailed documentation and transferable coverage for heritage homes.
Access premium-level manufacturer warranties through our certified contractor status. Coverage includes material defects, algae resistance, and wind protection up to 130 mph - essential for properties near Lake Ontario. Our status as elite installers provides St Catharines homeowners with extended coverage terms.
Our signature guarantee ensures your St Catharines home stays dry through every season. Specifically designed for our region's freeze-thaw cycles and heavy precipitation, this comprehensive coverage includes rapid response for any water infiltration issues and free inspections after major weather events.
Annual maintenance program tailored for St Catharines' diverse weather conditions. Includes bi-annual inspections, gutter cleaning, and roof assessment before winter and after spring thaw. Special attention to historic downtown properties with heritage architectural features.
Make Your Roof Affordable
Make your St Catharines roofing project affordable with our local financing solutions. We partner with Ontario-based lenders to offer competitive rates and flexible terms designed specifically for Niagara region homeowners.
Skip the interest with our zero-percent financing program for qualified St Catharines residents. Spread your roofing investment over 12-24 months while maintaining your savings. Perfect for unexpected replacements or planned upgrades.
Start your St Catharines roofing project now and pay later. Enjoy up to 6 months of payment-free time, allowing you to manage your budget effectively. Ideal for heritage home renovations and complex projects.
Customizable payment plans tailored to St Catharines homeowners' needs. Choose terms from 2-15 years with competitive rates and no early payment penalties. Special programs available for historic district properties.
Most homeowners qualify for some level of financing. Apply today to learn your options.
We install products from industry-leading manufacturers, each offering unique benefits and comprehensive warranties.
North America's #1 Roofing Manufacturer
GAF's premium shingles offer superior protection against St Catharines' harsh winters and humid summers. Their Timberline HDZ series features Advanced Protection Technology perfect for lake effect snow conditions. Backed by North America's largest roofing manufacturer, these shingles come with enhanced warranty coverage for Niagara region installations.
Best For:
Premium residential installations with lifetime warranties
Canadian Manufacturing Excellence
Canadian-made IKO shingles are specifically engineered for our Ontario climate. Their Cambridge collection offers exceptional ice dam protection and wind resistance up to 130 mph - crucial for St Catharines' lakeside location. Built with advanced color blending technology that maintains curb appeal in our variable weather conditions.
Best For:
Excellent value with proven Canadian performance
Stone-Coated Steel Roofing
DECRA's stone-coated steel roofing systems provide ultimate durability for St Catharines homes. Engineered to handle extreme temperature fluctuations and heavy snow loads common in the Niagara region. Their profiles complement both modern and heritage architecture while offering superior protection against our harsh Canadian winters.
Best For:
Permanent roofing for luxury homes and harsh climates
Not sure which manufacturer is right for you? We'll bring samples and help you choose during your free consultation.
Schedule Material ConsultationSt Catharines boasts a rich architectural heritage, particularly in its historic downtown core and surrounding areas. Many homes date back to the 19th century, featuring distinctive Victorian and Edwardian architectural styles that require specialized roofing knowledge to maintain their historic character and integrity.
We source period-appropriate materials including authentic slate, cedar shakes, and heritage-style asphalt shingles that match original roofing patterns. Our team is experienced in replicating historic details like decorative ridge caps and vintage flashings.
Our heritage roofing specialists understand the unique requirements of St Catharines's historic properties. We work closely with local heritage committees and follow preservation guidelines while incorporating modern weatherproofing techniques that protect these cherished structures without compromising their historical authenticity.
We balance heritage aesthetics with modern building code requirements for ventilation, fire rating, and structural safety.
Our team prepares detailed proposals and specifications for heritage committee review, streamlining the approval process.
Victorian, Edwardian, Arts & Crafts
Authentic cedar shake preserves historic character with natural grain patterns and weathered gray patina.
Gothic Revival, Italianate, Georgian
Quarried slate in traditional colors (Vermont green, purple, black) provides 100+ year lifespan.
Modern heritage-compatible option
High-definition shingles mimic cedar shake or slate appearance while meeting modern performance standards.
We've successfully completed roofing projects on dozens of heritage-designated properties. Let us handle the committee approval process.
Discuss Heritage ProjectWe strictly adhere to St Catharines building codes and Ontario safety regulations. Our teams undergo regular safety training and utilize state-of-the-art fall protection systems for every residential and commercial project.
All our workers are fully covered by WSIB, providing complete protection and peace of mind for both our team members and St Catharines homeowners.
We maintain comprehensive $7M liability insurance coverage, exceeding industry standards to ensure maximum protection for all St Catharines roofing projects.
Our roofers hold current certifications from major manufacturers and industry organizations, including GAF Master Elite and CertainTeed SELECT ShingleMaster credentials.
OHSA-certified fall arrest systems and safety protocols on every job
Rated "Best of" multiple years with verified customer reviews and A+ BBB rating
Each St Catharines neighborhood presents unique roofing challenges. Downtown's heritage properties require historical accuracy, while North End homes often need enhanced wind resistance. South End residences frequently benefit from modern energy-efficient solutions, and East Side properties typically require robust drainage systems due to the area's typography. We customize our approach for each district.
Our St Catharines roofing team has deep roots in the Niagara region, with over two decades of experience serving local homeowners. We're active community members, supporting local initiatives and maintaining strong relationships with suppliers and building officials. Our intimate knowledge of local architecture and weather patterns ensures superior results for every project.
St Catharines experiences diverse weather conditions throughout the year. We schedule projects strategically, typically focusing on major installations during spring and fall. Summer allows for optimal curing of materials, while winter work focuses on emergency repairs and maintenance. We monitor weather patterns closely to ensure ideal installation conditions.
Our combination of local expertise, heritage specialization, and modern techniques sets us apart in St Catharines. We offer industry-leading warranties, transparent pricing, and exceptional customer service. Our crews are fully trained in the latest roofing technologies while maintaining traditional craftsmanship standards. We pride ourselves on completing projects on time and within budget.
Get answers to common questions about roof replacements, warranties, and our process.
Our roofing crews live and work throughout St Catharines, ensuring fast response times and local expertise.
Schedule your complimentary roof inspection and receive a detailed proposal with material samples, timeline, and warranty details. Our roofing advisors are here to answer every question.
Maximize your home's protection and curb appeal with our comprehensive exterior services
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Learn More →Tools and information to help you make informed decisions about your roofing project
Get an instant estimate for your St Catharines roofing project with our interactive calculator
Browse our gallery of completed roofing projects in your area with before and after photos
Expert tips on roofing materials, maintenance, and choosing the right contractor
Learn about roofing systems, warranties, and what to expect during your project
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📍 Visit Us
45 Worthington Dr Unit H
Brantford, ON N3T 5M1
✉️ Email Us
info@customcontracting.ca