Modified bitumen roofing was invented in the 1960's and its popularity has been growing since then. It has grown so much that at the moment, it's considered to be popular among flat roofing materials for flat commercial roofs in Toronto.
What is bitumen?
Modifiers are added to standard roofing asphalt to replace plasticizers removed during the distillation process. Bitumen is reinforced with fiberglass or polyester fiber matting in order to increase durability and strength. Low cost and numerous benefits of this particular solution indicate that modified bitumen will remain the leader in the market for some time to come.
Diverse types of these membranes are accessible. This allows you to find the solution that meets your needs perfectly. This versatility makes buying this kind of products confusing. A consultation from one of our experienced roofers will definitely help you determine which system is best for you.
Modified Bitumen Roofing: Types
Modified bitumen, otherwise known as torch on or torch down roofing, is a popular option because of its outstanding durability and resilience. Two main types of these flat roofing solutions exist. Each has a set of benefits.
- APP (Atactic Polypropylene Products).
APP bitumen has a granule-coated surface, which increases its resistance to wear. This is a good solution for commercial roofs with heavy traffic. A smooth option for those who don’t need additional protection exist. This type of torch on roofing can be used during reroofing or installing a new roof. Due to the material's flexibility, it can be placed on any kind of flat roof, regardless of its size and configuration.
- SBS (Styrene-Butadiene-Styrene).
SBS modified bitumen is strong. It can effectively resist various kinds of damage. Its accessible divergent colors, though black and white are popular. It protects your building and helps you improve its appearance. SBS bitumen may have different types of reinforcements which affect its durability and weight.
2-ply systems can have either APP or SBS as the second ply. They are easy to set up and even easier to maintain. The level of protection they offer is huge. They are incredibly weather-resistant. This is an important quality for commercial roofs in Toronto since long winters and occasional storms pose a serious hazard to roofs.
Reasons to Choose a Torch on Roof
With a variety of roofing options available, it's difficult to determine which is the best. Each solution has its own strengths and weaknesses, examples are, synthetic roofing is affordable and lightweight, but it's not eco-friendly. Steel roofs are durable but might be noisy and require care to prevent rusting.
Torch on membrane stands out because it has many pros, against few cons. Important benefits it offers are:
- Water resistance.
Pooling water is the #1 enemy of flat roofs, but modified bitumen can solve it thanks to its impervious to water damage composition. Our experienced technicians can install torch on roofing perfectly, so there will be no leaks at the seams.
- Ease of placement.
An experienced professional armed with a torch will be able to install this type of system fast. The ease of this service ensures that the cost of labor will be low. This reduces the cost, so you will be able to afford more costly flat roofing materials of the higher quality.
Any kind of modified bitumen membrane can expand and contract along with the building without suffering irreparable structural damage.
Both APP and SBS modified bitumen solutions are durable by default. You can increase their lifespan and level of resistance to various types of damage by applying various coatings.
No arguing with the fact that modified bitumen roll roofing is an excellent solution for many types of flat roof. It might be a bit more expensive than common gravel and tar systems. Its efficiency and endurance are superior to many other types of commercial roofing.
It is known as torch on roofing. This system is asphalt based. It is best suited for building with flat or low-sloping roofs.
Roof System Components
Modified Roofing systems are composed of numerous components, with bitumen itself acting the role of a final layer. The components are:
- Modified bitumen
- Base sheets plies
Some major benefits of this type of systems are their increased resistance to extreme low and high temperatures and comparatively high levels of elasticity.
Surfacing (Design) Options
The surfacing options available for MB roofing systems are numerous and include a wide range of surfaces, like gravel, factory applied mineral and the “cool surfaces”, which are reflective and modeled specifically to reflect sun rays. A variety of colours is available for surfacing options, allowing you to match your MB roofing system to shingles or any other design elements.
The placement of a Modified Bitumen flat roofing system is conducted with the use of a “hot –mop”, hot fire torch or self-adhering rolls, produced by the manufacturer.
Benefits of Modified Bitumen Roofing Systems
- Superior waterproofing characteristics
- Proven track record of performance
- Broad range of installation methods
- Competitive life cycle
- Long-term warranties are accessible with many manufacturers
- Broad range of colours
- Meets building codes and insurance requirements