Protect your $London home with a complete roofing system engineered for Ontario's extreme weather. Our certified installers deliver superior craftsmanship with lifetime warranties on every project.
Lifetime Warranty
Workmanship Guaranteed
24/7 Emergency
Rapid Response Teams
0% Financing
Flexible Payment Plans
For 8 years, we've been London's trusted london services specialists. Our 1,200+ completed projects demonstrate our commitment to quality, from neighborhood to neighborhood.
Living in London, Ontario means facing a range of weather challenges—from harsh winter snow and ice to the intense summer sun and occasional heavy rainstorms. Your roof plays a crucial role in protecting your home from these elements, which is why choosing the right roofing contractor is so important. As Owens Corning Platinum Preferred Contractors and GAF Certified Contractors, we bring not only technical expertise but also a deep understanding of how local climate impacts roofing performance. Our team specializes in installing Owens Corning roofing systems, including durable asphalt shingles and stylish architectural shingles designed to withstand London’s seasonal extremes.
What sets us apart is our commitment to quality and craftsmanship. Every project we undertake comes with a lifetime workmanship warranty, giving you peace of mind that your roof will be installed right the first time and stand the test of time. Unlike many companies that subcontract work, all roofing installations and repairs are completed in-house by our trained crews. This ensures consistent quality and accountability on every job. Our dedication to excellence has earned us top-rated status on Google, with homeowners from neighborhoods like Wortley Village, Old East Village, and Byron sharing their positive experiences and trust in our work.
Choose from our comprehensive range of roofing solutions, each engineered for Ontario's extreme weather conditions and backed by industry-leading warranties.
Premium Performance & Curb Appeal
High-definition architectural shingles deliver unmatched curb appeal with multi-dimensional shadow lines and Class F wind ratings up to 130 MPH. Perfect for traditional and contemporary homes across Southern Ontario.
50-year limited manufacturer warranty
Algae-resistant granules prevent black streaks
Dual-layer construction for dimensional depth
Class A fire rating and Class 4 impact resistance
Shadow-line technology mimics cedar shake appearance
Full system warranty when paired with accessories
Available Colors:
Starting from $5,500 - $9,500 (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.
Traditional homes, colonial styles, ranch houses, Cape Cod designs
Schedule your free roof inspection online or contact us for a detailed proposal with material samples.
For example, one homeowner in Masonville was facing recurring ice dam issues each winter. Our team recommended and installed Owens Corning shingles with advanced weather-resistant technology, coupled with proper attic ventilation to prevent ice buildup. The result? A strong, leak-free roof that has performed flawlessly through several winters, reducing repair costs and energy bills. Another family in Oakridge appreciated our quick emergency roof repair service after a severe summer storm caused shingle damage. Our prompt response minimized water intrusion and saved them from further costly damage.
We understand that selecting the right roofing materials and contractor can feel overwhelming. That’s why we’re here to guide you through every step—answering questions about product benefits, installation processes, and maintenance tips tailored for London’s climate. Owens Corning shingles, for instance, offer superior wind resistance and algae protection, important features given our region’s variable weather.
A quality roof is more than just shingles. Learn about the critical components that protect your London home from Ontario's extreme weather.
3D Exploded View: See every layer of a complete roofing system
Structural foundation (typically OSB or plywood) that supports entire roofing system. We inspect and replace damaged sections.
Self-sealing membrane along eaves, valleys, and penetrations prevents ice dam leaks and wind-driven rain.
Waterproof barrier over entire deck provides secondary protection and prevents moisture infiltration.
Specialized first row prevents wind blow-off and creates watertight seal along roof edges.
Primary weather barrier with multi-layer construction, wind resistance, and 50-year warranties.
Pre-bent shingles seal roof peak and hip ridges with enhanced wind resistance.
Balanced intake (soffit) and exhaust (ridge vent) prevents moisture, heat buildup, and ice dams.
Metal barriers around chimneys, vents, skylights, and walls prevent water intrusion at vulnerable joints.
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
We protect landscaping, install tarps, position dumpster, and mark utilities. Your project manager reviews timeline and answers questions.
Our crews remove all existing shingles, underlayment, and damaged materials down to the bare deck. We work systematically to prevent mess.
We inspect every inch of decking for rot, damage, or soft spots. Any compromised sections are replaced with OSB or plywood to manufacturer specs.
Self-sealing ice & water shield goes along eaves (to warm wall), valleys, and all penetrations. Premium synthetic underlayment covers entire deck.
We install ridge vents, soffit intake vents, and additional exhaust as needed to achieve balanced airflow per building code requirements.
Starter course, field shingles (with 6-nail fastening), and ridge caps are installed according to manufacturer specifications. All penetrations are properly flashed.
Magnetic sweep removes nails, gutters are cleaned, tarps removed, and final walkthrough completed. You receive warranty documents and maintenance guide.
If you’re ready to invest in a reliable, expertly installed roof backed by a lifetime workmanship warranty, give us a call at (226) 799-4975. Whether you need a full roof replacement, routine maintenance, or urgent repairs, our experienced crews are ready to serve you promptly and professionally. Protect your home with confidence—reach out today and discover why so many London homeowners trust us for their roofing needs.
From lake-effect snow to summer heat waves, London 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:
Heavy snow + freeze-thaw cycles create ice dams that force water under shingles
Our Solution:
Extended ice & water shield + balanced ventilation keeps attic cold and prevents melt/refreeze
The Challenge:
Lake winds and storms can reach 80+ km/h, lifting shingles and exposing deck
Our Solution:
6-nail fastening pattern + Class F wind-rated shingles (130 MPH) + starter course
The Challenge:
-30°C winters to +35°C summers cause expansion/contraction stress
Our Solution:
Flexible synthetic underlayment + proper fastener spacing allows seasonal movement
The Challenge:
Lake-effect moisture and humid summers promote algae, moss, and rot
Our Solution:
Algae-resistant shingles + ventilation + deck moisture barriers prevent growth
Comprehensive Protection
Every roof installation includes dual warranty coverage: our lifetime workmanship guarantee plus manufacturer product warranties registered in your name.
Covers installation defects, leaks, and structural issues for as long as you own your home. Transferable to new owners.
Premium shingles include 50-year limited product warranties against defects and premature degradation.
We guarantee zero leaks for the first 10 years. If a leak occurs, we fix it at no cost to you.
Complimentary annual roof inspection for first 5 years to catch small issues before they become problems.
Make Your Roof Affordable
Don't delay essential roofing work due to budget concerns. Our financing partners offer flexible payment plans for every situation.
Up to 24 months with no interest on approved credit
Defer payments while enjoying your new roof (OAC)
Flexible terms up to 180 months for larger projects
Financing includes all materials, labor, ventilation, and disposal
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
Timberline HDZ® Architectural Shingles
LayerLock® technology prevents blow-off
StainGuard Plus™ algae protection
50-year limited warranty with system
Advanced Protection® Shingle Technology
Best For:
Premium residential installations with lifetime warranties
Canadian Manufacturing Excellence
Cambridge® & Dynasty® premium shingles
ArmourZone® enhanced protection
Manufactured in Ontario for local climate
Class 4 impact resistance available
25-50 year warranties
Best For:
Excellent value with proven Canadian performance
Stone-Coated Steel Roofing
Stone-coated steel for extreme durability
50-year limited warranty
Class A fire & Class 4 impact rated
Wind speeds up to 120 MPH
Lightweight - no structural modifications
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 ConsultationModern roofing systems significantly reduce energy costs. Plus, you may qualify for government rebates and tax credits.
ENERGY STAR® certified shingles reflect solar heat, reducing attic temperatures by 10-15°C and lowering cooling costs by up to 20%.
Balanced intake/exhaust prevents heat buildup in summer and moisture in winter, reducing HVAC strain and extending equipment life.
Optional reflective underlayment blocks 97% of radiant heat transfer, keeping living spaces cooler and more comfortable.
We assess attic insulation during installation and recommend upgrades to maximize R-value and energy savings.
Homeowners can receive up to $5,600 for energy-efficient upgrades, including roofing improvements that reduce energy consumption.
Energy assessment (before/after) covered
Attic insulation upgrades eligible
Ventilation improvements included
Combines with other home upgrades
Interest-free loans up to $40,000 for energy retrofits, including roofing systems that improve home efficiency.
0% interest for up to 10 years
No payments for first year available
Covers roofing + insulation + HVAC
We help with application process
Natural gas customers may qualify for rebates on home improvements that reduce energy waste, including attic ventilation.
Up to $5,000 in combined rebates
Attic insulation top-ups covered
Fast-track application available
Stackable with federal programs
Our team helps you navigate rebate applications, provides required documentation, and ensures you receive maximum benefits. Ask about eligibility during your consultation.
Combine manufacturer warranties, government rebates, and 0% financing to make your roof replacement more affordable than ever.
Heritage properties require specialized expertise to preserve architectural integrity while upgrading performance. We navigate heritage approvals and source period-appropriate materials.
We source cedar shake, natural slate, and architectural shingles that match original profiles and colors for designated heritage properties.
Specialized methods preserve original roof structure, salvage reusable materials, and maintain architectural details like decorative trim and finials.
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 ProjectOur crews undergo rigorous safety training and maintain industry certifications to deliver safe, compliant installations.
Full workplace safety insurance coverage protects homeowners from liability
Comprehensive general liability and property damage coverage
GAF Master Elite, IKO ShieldPRO, and DECRA certified installers
OHSA-certified fall arrest systems and safety protocols on every job
Rated "Best of" multiple years with verified customer reviews and A+ BBB rating
Get answers to common questions about roof replacements, warranties, and our process.
Our roofing crews live and work throughout London, ensuring fast response times and local expertise.
In addition to London, we provide expert roofing services throughout Southern Ontario.
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.
Our team has been serving London homeowners with hands-on expertise for years. We've completed thousands of projects across every neighborhood, understanding the unique challenges of London's climate, building codes, and property types.
All our contractors are: Licensed, insured, background-checked, and continuously trained on the latest industry standards and techniques. We invest in ongoing education to ensure we deliver cutting-edge solutions.
All our installation work is backed by our lifetime workmanship warranty
No hidden fees. Detailed quotes with all costs itemized upfront
We don't consider the job done until you're 100% satisfied
Don't miss this 60% OFF offer! Contact us today.
📍 Visit Us
45 Worthington Dr Unit H
Brantford, ON N3T 5M1
✉️ Email Us
infor@customcontracting.ca