When it comes to choosing the best roofing for flat roofs, property owners are often faced with a variety of options, each promising durability and cost-effectiveness. One roofing solution that consistently proves its worth—yet often flies under the radar—is torch down roofing. Especially popular for commercial buildings and modern residential designs, this roofing system is gaining ground due to its resilience and performance in a variety of climates.
In this article, we’ll explore the benefits of torch down roofing, dive into the materials and installation methods, compare it to other roofing types like roll roofing, and help you determine if this is the right choice for your property. By the end, you’ll have a clear understanding of why torch down roofing for flat roofs is becoming one of the top choices among building professionals and homeowners alike.
What Is Torch Down Roofing?
Torch down roofing, also known as modified bitumen torch down roofing, is a type of membrane roofing system designed specifically for flat or low-slope roofs. It consists of layers of asphalt modified with rubber or plastic polymers, reinforced with fiberglass or polyester, and topped with a waterproof cap sheet. During installation, a roofing professional uses a propane torch to melt the adhesive on the back of the material, fusing it directly to the roof deck or underlayment.
This torching process ensures a seamless, watertight bond that can withstand even the harshest weather conditions. The result is a durable and flexible surface that is ideal for areas prone to pooling water and UV exposure.
Torch Down Roofing Materials Explained
Torch down roofing systems typically consist of either two or three layers, depending on the level of protection desired. These layers include:
- Base Sheet: Usually mechanically fastened or adhered to the roof deck.
- Modified Bitumen Layer: This is the core layer made from asphalt and rubber additives like SBS (styrene-butadiene-styrene) or APP (atactic polypropylene). These polymers improve flexibility and durability.
- Cap Sheet: The top layer, which may contain embedded granules for UV protection and added durability.
These materials combine to form a strong, flexible, and watertight system. The flexibility of modified bitumen torch down roofing is particularly important in climates with fluctuating temperatures, as it allows the roofing system to expand and contract without cracking.
The Torch Down Roof Installation Process
A torch down roof installation requires specialized skills and should only be performed by experienced roofing contractors. Here’s a general overview of the process:
- Roof Preparation: The old roof is removed (if necessary), and the surface is cleaned and repaired.
- Base Sheet Installation: The base layer is applied to the roof deck using nails or adhesives.
- Torching the Modified Bitumen: The roofer uses a torch to heat the underside of the bitumen sheets as they are rolled out. This bonds them directly to the base sheet.
- Cap Sheet Application: The final layer is added, providing additional waterproofing and UV protection.
- Detail Work: Flashings, edges, and seams are sealed to complete the system.
Because of the use of an open flame, safety precautions and expertise are essential throughout this process. Hiring certified professionals like Eclipse Remodeling & Roofing Inc. ensures the job is done correctly and safely.
Torch Down Roofing Pros and Cons
Understanding the torch down roofing pros and cons is crucial when considering this option for your flat roof.
Pros:
- Excellent Waterproofing: Its seamless design significantly reduces the risk of leaks, even in areas with frequent rain or snow.
- UV Resistance: The granulated cap sheet reflects sunlight and prevents UV damage, extending the roof’s lifespan.
- Flexibility: The modified bitumen expands and contracts with temperature changes, reducing the risk of cracking.
- Durability: When properly installed, these roofs can last 15–20 years or longer.
- Low Maintenance: Minimal upkeep is required compared to other flat roofing systems.
Cons:
- Fire Hazard During Installation: The use of an open flame requires careful handling and professional expertise.
- Installation Costs: It may be more expensive than other flat roof options, but the long-term benefits often justify the investment.
- Not DIY-Friendly: Due to the complexity and risks, torch down roofing is not suitable for amateur installation.
Torch Down Roof vs Roll Roofing: Which Is Better?
Many property owners compare torch down roofing vs roll roofing when selecting a roofing system. While both are commonly used on flat roofs, their performance and longevity vary significantly.
Roll roofing is a low-cost solution made from asphalt-impregnated materials rolled out in sheets. While it’s easy to install, especially for temporary structures or sheds, it lacks the durability and lifespan of torch down systems.
Torch down roofing, on the other hand, provides a more permanent solution. It has better resistance to leaks, UV rays, and temperature extremes. Although the upfront cost is higher, torch down roofing offers superior long-term performance and lower maintenance.
What Is the Torch Down Roofing Lifespan?
One of the main reasons property owners choose torch down roofing is its longevity. When installed correctly and maintained properly, a torch down roofing system can last 15 to 20 years, and sometimes longer. Factors that affect its lifespan include:
- Quality of installation
- Type of modified bitumen used (SBS or APP)
- Climate and exposure to the elements
- Maintenance frequency
Compared to other flat roofing systems, torch down roofing has one of the longest lifespans, making it a wise investment for both residential and commercial properties.
Torch Down Roofing Cost: What to Expect
The torch down roofing cost varies depending on several factors, including the size of the roof, number of layers, labor costs, and regional pricing differences. On average, you can expect to pay:
- $4 to $8 per square foot for a two-layer system
- $6 to $10 per square foot for a three-layer system with a granulated cap sheet
While it may seem more expensive upfront than options like roll roofing, the long-term benefits—such as reduced repairs, better insulation, and longer lifespan—often make torch down roofing more cost-effective over time.
Best Roofing for Flat Roofs: Why Torch Down Leads the Pack
Flat roofs require materials that can effectively deal with water pooling, sun exposure, and temperature fluctuations. Among the many roofing systems available, torch down roofing stands out as one of the best roofing options for flat roofs due to its:
- Watertight seal
- Flexibility in cold and hot temperatures
- Resistance to UV radiation
- Low maintenance requirements
- Long service life
Whether you own a commercial building or a residential property with a flat roof, torch down roofing offers a reliable solution with performance you can count on.
Torch Down Roof Maintenance Tips
Although torch down roofs are known for being low maintenance, a few proactive steps can help ensure your roof lasts as long as possible:
- Inspect Annually: Check for cracks, blisters, or loose seams at least once a year.
- Clean Debris: Remove leaves, branches, and dirt that can block drainage and cause water pooling.
- Seal Penetrations: Monitor and reseal areas around chimneys, vents, and skylights to prevent leaks.
- Professional Inspection: Schedule a professional inspection after severe storms or every 3–5 years.
By following these simple torch down roof maintenance tips, you’ll help maximize the lifespan and performance of your roofing system.
Is Torch Down Roofing Right for Your Property?
Torch down roofing is ideal for:
- Flat or low-slope roofs
- Properties located in areas with hot summers or heavy rainfall
- Owners seeking a long-lasting, low-maintenance solution
- Commercial buildings or residential homes with minimal pitch
If your structure fits these criteria, torch down roofing could be a smart, cost-effective investment.
Conclusion: Experience the Advantages of Torch Down Roofing with the Right Experts
Torch down roofing offers a combination of durability, flexibility, and superior waterproofing that makes it one of the most effective solutions for flat roofs. While the installation requires skilled hands and the investment may be higher upfront, the long-term performance and low maintenance make it well worth the cost.
At Eclipse Remodeling & Roofing Inc., we specialize in high-quality torch down roof installation using the best materials and industry-leading techniques. With years of experience in flat roof torch down systems, our team ensures safe, efficient, and lasting results that will protect your property for decades to come.
Ready to upgrade your flat roof with a torch down system? Contact Eclipse Remodeling & Roofing Inc. today for a free consultation and let us show you the hidden benefits of this powerful roofing solution.