Engineered for Toronto's unique Lake Ontario weather patterns and 100cm annual snowfall. Our roofing systems protect heritage homes and modern condos alike with solutions tested against Southern Ontario's harshest conditions.
Lifetime Warranty
Workmanship Guaranteed
24/7 Emergency
Rapid Response Teams
0% Financing
Flexible Payment Plans
Toronto homeowners trust Custom Contracting for roofing. With 18 years of local experience and over 8,000 successful projects, we're Toronto's leading experts in residential home improvement.
Toronto's diverse architecture, from Victorian homes in The Annex to modern builds in Liberty Village, demands specialized roofing expertise. Our solutions account for Lake Ontario's moisture effects, heavy snow accumulation in North End, and the urban heat island effect downtown. With over 100cm of annual snowfall and dramatic temperature swings, Toronto roofs require superior materials and installation methods that respect both historic preservation and modern building codes.
Choose from our comprehensive range of roofing solutions, each engineered for Ontario's extreme weather conditions and backed by industry-leading warranties.

Designed for Toronto's Historic Districts
Engineered specifically for Toronto's freeze-thaw cycles and tested against Lake Ontario's moisture effects. These premium shingles complement both heritage homes and modern builds while providing superior protection against our unique climate challenges.
Enhanced grip for -30°C Toronto winters
Lake Ontario wind resistance up to 210 km/h
Victorian and Edwardian style-matched colours
Double-reinforced ice dam protection system
UV-resistant coating for intense summer heat
Advanced Toronto rainfall channeling design
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.
Heritage homes in The Annex, Cabbagetown, and Rosedale
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 Toronto home from Ontario's extreme weather.

3D Exploded View: See every layer of a complete roofing system
High-density plywood deck rated for Toronto's 100cm annual snowfall and 150 PSF load capacity. Enhanced moisture resistance prevents warping during freeze-thaw cycles common to Southern Ontario.
Premium self-adhering membrane designed for Toronto's heavy snow accumulation zones. Features additional protection at eaves and valleys where ice dams commonly form in GTA winter conditions.
Synthetic underlayment with enhanced slip resistance for Toronto's varying weather conditions. Provides secondary water barrier during freeze-thaw cycles and protection during installation.
Advanced adhesive starter strips rated for Toronto's wind exposure patterns. Engineered to resist uplift in urban wind tunnels and provide enhanced first-row water protection.
Impact-resistant architectural shingles designed for Toronto's temperature extremes. Features enhanced granule adhesion for extended durability in Ontario freeze-thaw conditions.
Ventilated ridge cap system optimized for Toronto's seasonal temperature variations. Promotes proper attic airflow while preventing snow infiltration during winter storms.
Balanced intake-exhaust system calibrated for Toronto's climate zone. Prevents ice dam formation while managing summer heat buildup in Ontario's humid conditions.
Heavy-gauge metal flashing with enhanced ice shield integration for Toronto winters. Custom-bent profiles prevent ice dam backup at all roof penetrations and valleys.



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 Toronto-certified inspectors thoroughly assess your roof condition and provide detailed documentation for municipal permits. We handle all paperwork with Toronto Building Services and ensure compliance with local bylaws and Ontario Building Code requirements.
We coordinate material delivery considering Toronto's traffic patterns and neighborhood parking restrictions. Our teams carefully schedule deliveries to minimize disruption in residential areas from Scarborough to Etobicoke, ensuring materials are safely staged and protected.
Timing tear-offs around Toronto's weather patterns is crucial. We monitor forecasts carefully and use rapid-response temporary protection systems to guard against sudden rainfall. Our crews are equipped to handle unexpected weather changes common to the GTA.
Installing premium ice and water shields along eaves, valleys, and critical areas to prevent ice dam formation common in Toronto winters. We extend protection beyond Ontario Building Code minimums for maximum durability in harsh winter conditions.
Using high-wind rated shingles tested for Toronto's lake effect winds and heavy snow loads. We implement enhanced nailing patterns and starter strip techniques specifically designed for Southern Ontario's climate challenges.
Installing balanced ventilation systems calibrated for Toronto's humidity levels and seasonal temperature swings. We ensure proper airflow to prevent moisture buildup during humid summers and ice dam formation in winters.
Comprehensive final inspection following Toronto Green Standard guidelines and local building codes. We provide detailed documentation of all work completed, including photos and warranty information specific to Ontario weather conditions.
From lake-effect snow to summer heat waves, Toronto 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:
Toronto's heavy snowfall averaging 100cm annually, combined with freeze-thaw cycles, creates perfect conditions for ice dam formation. Heat loss through poorly insulated roofs melts snow, which refreezes at eaves causing damaging ice buildup.
Our Solution:
We implement a three-layer defense: enhanced attic insulation, superior ventilation systems, and premium ice-and-water shield extending 6 feet beyond the heated wall line. This comprehensive approach prevents ice dam formation in Toronto's challenging winter conditions.
The Challenge:
Toronto experiences strong lake effect winds, particularly in winter months, with gusts exceeding 90 km/h. High-rise development creates wind tunnels in urban areas, increasing the risk of shingle damage and uplift.
Our Solution:
Installation of high-wind rated architectural shingles with enhanced nailing patterns and premium starter strips. We use six nails per shingle and specialized high-wind installation techniques certified for Toronto's lakefront conditions.
The Challenge:
Toronto faces extreme temperature variations from -30°C in winter to +35°C in summer. These dramatic swings cause thermal shock to roofing materials, leading to expansion, contraction, and potential material failure.
Our Solution:
We use temperature-resistant materials specifically rated for Southern Ontario's climate extremes. Our installation techniques include proper spacing for expansion and contraction, plus synthetic underlayment that withstands extreme temperature variations.
The Challenge:
Toronto's humidity levels often exceed 80% in summer months, while winter brings heavy snow and rain. This moisture combination creates ideal conditions for mold growth and wood rot in roof structures.
Our Solution:
Implementation of advanced moisture barriers, proper attic ventilation systems, and moisture-resistant underlayment. We install specialized vapor barriers and ensure adequate airflow to prevent condensation buildup in Toronto's humid conditions.
Comprehensive Protection
Every roof installation includes dual warranty coverage: our lifetime workmanship guarantee plus manufacturer product warranties registered in your name.
Our exclusive lifetime workmanship warranty protects Toronto homeowners against installation-related issues for as long as you own your home. This comprehensive coverage accounts for Toronto's unique weather challenges, from ice damming to wind damage, ensuring your investment remains protected through every season.
Access premium manufacturer warranties enhanced specifically for Toronto's climate. Our certified status with major manufacturers allows us to offer extended coverage periods and comprehensive protection that exceeds standard warranty terms, including coverage against extreme temperature fluctuations and severe weather events.
Our exclusive leak-free guarantee is designed specifically for Toronto's challenging weather patterns. From spring thaws to winter ice dams, we guarantee your roof against water penetration. This includes rapid response during emergency situations and priority service during extreme weather events.
Protect your investment with our comprehensive maintenance program designed for Toronto's distinct seasons. Includes bi-annual inspections, gutter cleaning, ice dam prevention, and documented assessments. Our proactive approach helps prevent costly repairs and extends roof longevity.
Make Your Roof Affordable
Make your Toronto roof replacement affordable with our flexible financing solutions. We partner with leading Canadian financial institutions to offer competitive rates and terms tailored to local homeowners' needs.
Take advantage of interest-free financing for up to 12 months on your Toronto roof replacement. Quick approval process, no hidden fees, and fixed monthly payments make budgeting simple and straightforward.
Start your Toronto roofing project now and pay later with our deferred payment program. No payments for up to 6 months, giving you flexibility to manage your home improvement budget effectively.
Choose from various payment terms up to 15 years with competitive interest rates. Our Toronto financing specialists will help you select the best option based on your budget and project scope.
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 roofing systems are engineered to withstand Toronto's harsh winters and hot summers. Their Advanced Protection Technology ensures superior granule adhesion and wind resistance up to 130 mph. As a GAF Master Elite contractor, we offer the Golden Pledge warranty, providing Toronto homeowners with 50-year material and 25-year workmanship coverage.
Best For:
Premium residential installations with lifetime warranties
Canadian Manufacturing Excellence
Canadian-made IKO shingles are specifically engineered for our local climate conditions. Their Cambridge architectural shingles feature advanced weather protection and enhanced wind resistance perfect for Toronto's lakefront properties. IKO's manufacturing facility in Brampton ensures quick availability and products tested in real Canadian conditions.
Best For:
Excellent value with proven Canadian performance
Stone-Coated Steel Roofing
DECRA's stone-coated steel roofing systems provide superior protection against Toronto's freeze-thaw cycles and heavy snow loads. Their interlocking panels resist winds up to 120 mph and are ideal for heritage homes in downtown Toronto. DECRA's lifetime warranty includes protection against hail and snow damage common in the GTA.
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 ConsultationToronto's heritage districts, including areas like Cabbagetown and The Annex, showcase stunning Victorian and Edwardian architecture that demands specialized roofing expertise. These historic properties, many dating back to the 1800s, require meticulous attention to maintain their architectural integrity and historical significance.
We source period-appropriate materials including authentic slate, clay tiles, and copper flashings that match original specifications. Our team is experienced with heritage-specific materials like cedar shakes and decorative metal work common in Toronto's historic districts.
Our heritage roofing specialists work closely with Toronto's Heritage Preservation Services to ensure compliance with preservation guidelines. We combine traditional craftsmanship with modern techniques to restore and maintain historic roofs while preserving their original character and meeting current building codes.
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 Ontario's Occupational Health and Safety Act and Toronto's municipal building codes. Our teams undergo regular safety training and utilize state-of-the-art fall protection systems.
Full WSIB coverage protects our workers and clients on every Toronto project, providing peace of mind and compliance with provincial regulations.
We maintain comprehensive $7M liability insurance coverage, exceeding industry standards to protect Toronto property owners and our work.
Our team holds all required Toronto roofing certifications, including Working at Heights and specific manufacturer credentials for premium roofing systems.
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 Toronto neighborhood presents unique roofing challenges. Downtown's heritage properties require historical expertise, while North End's post-war homes often need modern energy-efficient solutions. South End's exposure to lake effects demands durable materials, and East Side's diverse housing stock requires versatile approaches. We customize our services to match each area's specific needs.
With over two decades serving the Greater Toronto Area, our team brings deep local knowledge to every project. We understand Toronto's unique architectural styles, building codes, and permit requirements. Our involvement in local trade associations and community initiatives, including partnerships with Habitat for Humanity Toronto, demonstrates our commitment to the city.
Toronto's climate demands strategic timing for roofing projects. We typically recommend scheduling installations between April and November, avoiding the harsh winter months. Our teams monitor weather patterns closely and use specialized techniques to handle Toronto's freeze-thaw cycles, heavy snow loads, and summer humidity challenges.
Our dedicated Toronto-based team offers unmatched local expertise, transparent pricing, and industry-leading warranties. We're fully licensed, insured, and maintain an A+ BBB rating. Our proven track record of over 5,000 successful GTA installations, combined with our 24/7 emergency service and commitment to using premium materials, sets us apart from other contractors.
Get answers to common questions about roof replacements, warranties, and our process.
Our roofing crews live and work throughout Toronto, 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 Toronto 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