As a property owner, it’s likely that you’ll come across all kinds of roofing issues that could lead to costly repairs. This, of course, can easily be prevented in time. Having a tendency to sidestep problems with your roof isn’t a good decision at all. If you ask us, we recommend you stop avoiding roof problems before it’s too late and give it the attention it deserves!
Residential and commercial roofing differs in many ways, one of which is the complexity of their installation. If we compare them only on the basis of their complexity, we can conclude that a roof on a home is far less complicated to install than a roof on a commercial building. You see, commercial properties are known for having a roof with little or no pitch – this means that you can’t install, for instance, a material such as asphalt shingles. Instead, you have to opt for a different type of roof, specifically made for their type of pitch.
Fortunately, manufacturers have come up with specially designed roofing materials that will prolong your commercial roof’s lifespan, all while protecting it in the best possible way. This is where torch down roofing comes in. Haven’t heard about torch down roofing before? Keep reading to find out more!
What Is Torch Down Roofing?
Torch down roofing is a method for flat roofs that involves laying out sheets of modified bitumen. For those not familiar with this material, it’s an asphalt combined with polymerized rubber/plastic and then reinforced with fiberglass. Once it’s rolled out on the roof’s surface, roofing contractors use an open-flame propane roofing torch to bond the material permanently to the roof’s surface (thus giving it its name).
Once the modified bitumen sheets reach the ideal temperature, contractors then fuse the seams together, forming a watertight seal. The great thing about this material is that it can withstand extreme climates without cracking or melting, thanks to its high tolerance to both hot and cold temperatures.
In the industry, we differentiate between two main types of torch down roofing systems: two-layer and three-layer systems.
- Two-Layer System: Consisting of torch down roofing base sheet and a cap sheet.
- Three-Layer System: Consisting of an extra granulated cap sheet for enhanced protection.
Each system is designed for durability and weather resistance, with the three-layer system having the added bonus of longevity and protection.
Torch Down Roofing Materials & Components
Unlike other residential roofing materials, modified bitumen is mixed with a particular polymer. And only two of the polymers are suitable for mixing with modified bitumen: atactic polypropylene (APP) and styrene butadiene styrene (SBS). The difference between the two is that APP is a form of plastic, while SBS is a form of rubber. For both applications, contractors use a roofing torch to secure them to the surface of the roof.
Apart from modified bitumen, other components of the torch down roofing system include:
- Insulation – the first layer, attached with glue or screwed into the roof decking.
- Vapor barrier – removes condensation and moisture from the underlayment.
- Overlay – placed on top of the vapor barrier – supports the torch down roofing membrane.
- Flashings – metal parts used to prevent water penetration at weak points of the roof (chimneys, ventilation openings, etc.)
Torch Down Roofing Installation Process
How to install torch down roofing? The installation process involves the following steps:
- The roof surface is cleaned and any existing roofing material is removed.
- The insulation and vapor barrier are applied to ensure a solid foundation.
- The base sheet is laid out and secured with a torch to create a strong bond.
- The top layer (aka cap sheet) is installed for watertight protection.
Propane torch and a roofing roller are needed for seamless installation. Hire experienced contractors to avoid common issues like uneven bonding or air pockets.
What is Composition Roll Roofing?
Available in 100 sq ft rolls with a weight of about 75 pounds/roll, composition roll roofing is a mineral-surfaced oil-based asphalt product similar to asphalt shingles. Although cheaper and thinner, they can also be less durable. They’re a great choice for low-sloped roofs. But when it comes to their design, there’s a lot left to be desired. They come in only black, white, and brown.
Other types of roll roofing exist, including:
- Peel and stick
- Nailed down roll roofing
- Glue down roll roofing
Torch Down Roofing Cost and Where to Buy
So, how much does torch down roofing cost?
Torch down roofing price per roll typically ranges between $90 and $150, depending on quality and manufacturer. For a complete system, including labor and best torch down roofing material, you may be looking at $4 to $8 per sq foot.
If you’re searching for torch down roofing near me, consider local suppliers or retailers like Home Depot. They often carry a range of torch down roofing tools, membranes, and accessories to meet your needs.
How Long Does Torch Down Roofing Last?
On average, torch down roofs last between 15 to 20 years. A well-maintained three-layer system can extend this even further. Regular inspections and repairs are key to maximizing durability.
Benefits of Torch Down Roofing
- Prevents leaks and water damage
- Withstands extreme heat, cold, and UV exposure
- Resistant to cracking, melting, and other common roofing issues
- Requires minimal upkeep compared to other roofing systems
How to Repair Torch Down Roofing
Even the most durable roofing systems may require repairs over time. Here’s how to handle torch down roofing repairs:
- Inspect for Damage: Look for cracks, punctures, or loose seams.
- Remove Damaged Sections: Use a roofing knife to cut away compromised areas.
- Apply a Patch: Heat and bond a new piece of modified bitumen over the damaged section.
- Seal the Edges: Ensure watertight protection by fusing the edges with a torch.
Alternatives to Torch Down Roofing
While torch down roofing is an excellent option for many properties, it’s not suitable for all roof types. Alternatives include:
- Single-Ply Membranes: Lightweight and durable options like TPO or EPDM.
- Built-Up Roofing (BUR): Multiple layers of asphalt and gravel for added protection.
- Metal Roofing: Offers exceptional longevity and design versatility.
Started Thinking About Torch Down Roofing? Let Pro Restoration LLC Help
When choosing your solution, it’s important to weigh everything before you go to your roofing contractor and tell them your desired choice. That’s why we recommend that you explore all of your options so that you can be 100% certain and happy with your pick.
Bear in mind that torch down rolled roofing materials are not suitable for all types of roofs. They’re mostly suitable for some low-sloped roof designs. Make sure you find a professional contractor – such as Pro Restoration LLC – who will guide you throughout the process and who can answer all of your questions. They can help you in the process and suggest options that may be better for your property.
Pro Restoration is a roofing company in Machesney Park ready to handle all your torch down roofing needs and problems. Contact us if you have any questions or requests.
