Torch-On Roofing Guide: Costs, Lifespan, and Maintenance in BC

Torch-on roofing has become one of the most popular flat and low-slope roofing solutions across British Columbia, valued for its impressive durability, waterproofing capabilities, and cost-effectiveness. Whether you’re a homeowner, property manager, or business owner in the Lower Mainland, understanding the ins and outs of torch-on roofing can help you make the right investment in your property’s long-term protection. This comprehensive guide from Citadel Roof & Building Maintenance covers everything you need to know about torch-on roofing in BC, including typical costs, expected lifespan, and essential maintenance tips.


What is Torch-On Roofing?


Torch-on roofing, also known as modified bitumen roofing, is a multi-layer system made from asphalt bitumen modified with polymer additives. These layers are fused together using a propane torch, creating a seamless, flexible, and highly water-resistant barrier. Torch-on roofing is the ideal choice for the unpredictable and damp climate of British Columbia, making it a trusted solution for both residential and commercial properties. Its sleek finish, weather resistance, and energy-saving benefits make it an increasingly popular option in the Vancouver, Tri-Cities, and surrounding regions.


Torch-On Roofing Installation Costs in BC


One of the most common questions property owners have about torch-on roofing is the cost. In British Columbia, the cost of a torch-on roof installation can range between $9 and $18 per square foot depending on factors like roof size, number of layers (two-ply or three-ply system), accessibility, roof complexity, and the contractor’s expertise.


Additional considerations influencing cost include:


  • Removal of old roofing materials
  • Repairs to the roof deck or structure
  • Flashing and drainage upgrades
  • Quality of materials and warranties provided


At Citadel Roof & Building Maintenance, we offer free, detailed estimates so you know exactly what to expect before your project begins. Investing in a professional, certified torch-on installation ensures you receive the best value and reliable, long-term protection for your property.


How Long Does Torch-On Roofing Last?


The lifespan of a torch-on roof is one of its standout benefits. A professionally installed torch-on roofing system can last between 20 and 30 years or more with regular maintenance. Factors that influence longevity include:


  • Quality of installation and materials
  • Exposure to extreme weather (rain, snow, wind, and UV rays)
  • Regular inspections and timely repairs


Citadel Roof & Building Maintenance only uses top-tier materials from trusted manufacturers and employs certified installers, providing robust protection for your investment and peace of mind under BC’s challenging weather conditions.


Maintaining Your Torch-On Roof: Tips for Longevity


Proper maintenance is essential to maximizing the lifespan and performance of your torch-on roof. Here are some expert tips from the Citadel team:


1. Schedule Regular Inspections: Have your torch-on roof inspected at least once a year by a certified professional, or more often after severe weather. Early detection of cracks, blisters, or punctures can prevent small issues from becoming expensive repairs.


2. Keep the Roof Clean: Remove leaves, dirt, and other debris to prevent water pooling, which can weaken the roofing membrane and lead to leaks.


3. Check Flashing and Seals: Ensure all flashing around vents, skylights, and HVAC units is secure and watertight. Faulty flashing is one of the most common sources of leaks.


4. Address Repairs Promptly: If you notice any signs of damage—such as bubbling, granule loss, or soft spots—schedule repairs right away. Delaying repairs can shorten your roof’s lifespan and increase costs.


5. Maintain Gutters and Drains: Proper drainage is crucial, especially during BC’s heavy rains. Clean gutters and downspouts regularly to prevent water buildup and roof damage.


Why Choose Citadel Roof & Building Maintenance for Torch-On Roofing?


With over 15 years of experience serving the Greater Vancouver area, Citadel Roof & Building Maintenance is recognized for our expertise in torch-on roofing systems. Our Red Seal-certified professionals provide meticulous installations, robust warranties, and responsive maintenance services for both residential and commercial properties.


We are proud to offer:


  • Free, no-obligation estimates
  • 24/7 emergency service
  • Industry-leading warranty options
  • Service across Vancouver, Tri-Cities, Richmond, Surrey, Burnaby, and more


Ready for a Torch-On Roof That Lasts?


Protect your property with a torch-on roofing system installed by BC’s trusted experts. Contact Citadel Roof & Building Maintenance today to schedule your free estimate or inspection. Let our certified team help you enjoy peace of mind and long-lasting protection—rain or shine. Visit www.citadelroofing.ca or call us today to get started!

Share This Blog

Person in yellow gloves cleaning a gutter on a rooftop.

Gutter Cleaning and Roof Drainage: Your Property’s First Line of Defense

February 4, 2026
Learn why clean gutters and proper drainage are vital for preventing water damage and roof issues.
Three black trucks parked outside a green

24/7 Emergency Roofing: How to Respond to Post-Holiday Storm Damage

January 21, 2026
Severe weather after the holidays? Discover how Citadel’s emergency roofing service responds quickly to storm damage and protects your home or business.
Row of townhouses with dark roofs and parked cars along a street, sunny day.

New Year, New Roof: Top Signs It’s Time for a Residential Roof Replacement

January 7, 2026
Start the New Year right! Learn the warning signs your home needs a new roof and how Citadel’s expert team ensures a hassle-free replacement process.
Construction workers on a roof install black roofing material on a sunny day. Houses and trees in the background.

Strata Roofing: How to Prevent Winter Leaks in Multi-Family Buildings

December 17, 2025
Protect your strata building this winter! Discover proactive measures to prevent leaks and water damage with expert strata roofing tips from Citadel.
Roofer using a torch to adhere rolled roofing material to a flat roof.

Torch On Roofing: The Ideal Solution for Wet Vancouver Winters

December 3, 2025
Explore the benefits of Torch On Roofing for wet, cold Vancouver winters. Find out why commercial and residential clients trust Citadel for superior waterproof protection.
Workers installing roofing membrane on a rooftop with a city skyline in the background.

Winter Waterproofing: Stop Leaks Before the Holiday Season

November 19, 2025
Stop winter leaks before the holidays. Citadel’s waterproofing tips for decks, basements, and roofs help prevent mold and damage. Book pre-holiday service in Vancouver and the Tri-Cities.
Warehouse roof with debris, trucks at loading docks, industrial buildings in the background.

Flat Roof vs. Sloped Roof: Which Is Best for Your Commercial Building?

November 5, 2025
Not sure which roof type is right for your business? Explore the pros and cons of flat and sloped commercial roofs.
A worker torching asphalt roofing material to seal it, creating flames against a dark surface.

Residential Torch On Roofing: Is Autumn the Best Time for Installation?

By 5f6ce39d7fd3fe258799dc1b • October 21, 2025
Is autumn the ideal time to install torch-on roofing in BC? Explore the benefits of fall installations and get expert advice from Citadel for durable, energy-efficient roofing solutions.
A person applying a grey sealant to a flat roof with a roller. A roll of material sits nearby.

Waterproofing Your Property: Fall Solutions for Mold and Moisture Prevention

October 7, 2025
Learn how professional waterproofing can prevent moisture and mold during BC’s wet fall months. Protect your property investment and ensure a safer, healthier environment this autumn.
Gutter overflowing with brown leaves, on a roof with white spots.

The Importance of Gutter Cleaning for BC Homes: Fall Maintenance Musts

September 16, 2025
Blocked gutters can cause water damage and leaks, especially in BC’s rainy autumns. Find out why fall gutter cleaning is crucial for protecting your home and preventing expensive repairs.