Modified Bitumen Vs Roll Roofing: Which is better for your home?

Oleh Jodi Nicolas June 14, 2023 Post a Comment

When it comes to choosing the right roofing material for your home, there are numerous options available in the market. Two of the most popular options are modified bitumen and roll roofing. While both of them offer a range of benefits, they differ in terms of durability, cost, installation, and performance. In this article, we'll explore the key differences between modified bitumen and roll roofing to help you make an informed decision.

Section 1: What is Modified Bitumen Roofing?

Modified bitumen is a type of asphalt roofing material that was developed in the 1960s. It is made from asphalt and a variety of modifiers and solvents. These modifiers can include APP (atactic polypropylene), SBS (styrene-butadiene-styrene), and SEBS (styrene-ethylene-butylene-styrene). Modified bitumen roofing can be installed using hot or cold adhesives, torch-applied, or self-adhering.

Modified bitumen roofing comes in two main types: torch-down and peel-and-stick. Torch-down modified bitumen requires a propane torch to melt the adhesive and secure the roofing material in place. Peel-and-stick modified bitumen has a self-adhesive backing that can be peeled off and stuck directly onto the roof deck.

Section 2: What is Roll Roofing?

Roll roofing, also known as mineral-surfaced roofing, is a low-cost roofing material that is typically used on flat or low-sloping roofs. It consists of a single layer of asphalt-saturated organic or fiberglass felt that is coated with mineral granules for added durability and protection against the elements.

Roll roofing is available in two main types: smooth and granulated. Smooth roll roofing is typically used as a base layer for other roofing materials, while granulated roll roofing can be used as a standalone roofing material.

Section 3: Durability

When it comes to durability, modified bitumen roofing is generally considered to be more durable than roll roofing. Modified bitumen can withstand extreme temperatures, high winds, and heavy rainfall, making it ideal for areas with harsh weather conditions. Roll roofing, on the other hand, is prone to cracking and splitting over time, particularly in areas with extreme temperature fluctuations.

Section 4: Cost

Modified bitumen roofing is generally more expensive than roll roofing. The cost of modified bitumen roofing can vary depending on the type of material used, the size of the roof, and the complexity of the installation process. Roll roofing, on the other hand, is one of the most affordable roofing materials available in the market.

Section 5: Installation

Both modified bitumen and roll roofing can be installed by a professional roofing contractor. However, modified bitumen requires a more complex installation process compared to roll roofing. Modified bitumen roofing must be installed using hot or cold adhesives, torch-applied, or self-adhering, which requires specialized equipment and skills. Roll roofing, on the other hand, is relatively easy to install and can be using basic tools and techniques.

Section 6: Performance

Modified bitumen roofing is known for its excellent performance in extreme weather conditions. It can withstand high winds, heavy rainfall, and extreme temperatures without cracking or splitting. Roll roofing, on the other hand, is less durable and may not perform well in harsh weather conditions.

Section 7: Maintenance

Both modified bitumen and roll roofing require regular maintenance to ensure their longevity. Modified bitumen roofing should be inspected annually for any signs of damage or wear and tear. Roll roofing should also be inspected regularly and any cracks or splits should be repaired immediately to prevent water damage.

Section 8: Energy Efficiency

Modified bitumen roofing is known for its energy efficiency. It can reflect sunlight and heat, which can help reduce your cooling costs during the summer months. Roll roofing, on the other hand, is not as energy-efficient and may require additional insulation to maintain a comfortable indoor temperature.

Section 9: Environmental Impact

Both modified bitumen and roll roofing have a negative impact on the environment. The production of asphalt, which is used in both roofing materials, releases harmful VOCs (volatile organic compounds) into the atmosphere. Additionally, both roofing materials are non-biodegradable and will end up in a landfill once they reach the end of their lifespan.

Section 10: Aesthetics

Modified bitumen roofing comes in a range of colors and styles, making it a popular choice for homeowners who want to enhance the curb appeal of their home. Roll roofing, on the other hand, has a limited range of colors and styles and is typically used on commercial or industrial buildings.

Section 11: Noise Reduction

Modified bitumen roofing can help reduce noise pollution by absorbing sound waves. This can be particularly beneficial if you live in a noisy area or near a busy road. Roll roofing, on the other hand, does not offer any noise-reducing benefits.

Section 12: Fire Resistance

Modified bitumen roofing is highly fire-resistant and can help protect your home from fires caused by external sources. Roll roofing, on the other hand, is less fire-resistant and may not provide adequate protection in the event of a fire.

Section 13: Longevity

Modified bitumen roofing can last up to 20-30 years with proper maintenance and care. Roll roofing, on the other hand, has a shorter lifespan of around 5-10 years.

Section 14: Is Modified Bitumen or Roll Roofing Better?

The answer to this question depends on your specific needs and budget. If you live in an area with harsh weather conditions and want a roofing material that is highly durable and long-lasting, modified bitumen roofing may be the best choice for you. However, if you're on a tight budget and need a roofing material that is affordable and easy to install, roll roofing may be a better option.

Section 15: Pros and Cons of Modified Bitumen and Roll Roofing

Modified Bitumen Roofing Pros:

Highly durable and long-lasting
Excellent performance in extreme weather conditions
Energy-efficient
Fire-resistant
Aesthetically pleasing

Modified Bitumen Roofing Cons:

More expensive than roll roofing
Requires a more complex installation process
Has a negative impact on the environment

Roll Roofing Pros:

Affordable
Easy to install
Suitable for low-sloping or flat roofs
Can be used as a base layer for other roofing materials

Roll Roofing Cons:

Less durable than modified bitumen roofing
Limited range of colors and styles
Not suitable for areas with harsh weather conditions
Has a negative impact on the environment

Frequently Asked Questions

Q1: What is the difference between modified bitumen and roll roofing?

A1: Modified bitumen is a type of asphalt roofing material that is more durable and longer-lasting than roll roofing. Roll roofing, on the other hand, is a low-cost roofing material that is easy to install but less durable than modified bitumen.

Q2: How long does modified bitumen roofing last?

A2: Modified bitumen roofing can last up to 20-30 years with proper maintenance and care.

Q3: How long does roll roofing last?

A3: Roll roofing has a shorter lifespan of around 5-10 years.

Q4: Is modified bitumen roofing more expensive than roll roofing?

A4: Yes, modified bitumen roofing is generally more expensive than roll roofing.

Q5: Can roll roofing be installed on a sloped roof?

A5: Roll roofing is typically used on low-sloping or flat roofs and may not be suitable for use on sloped roofs.

Q6: Is modified bitumen roofing energy-efficient?

A6: Yes, modified bitumen roofing can reflect sunlight and heat, making it an energy-efficient roofing material.

Q7: Which roofing material is more environmentally friendly?

A7: Both modified bitumen and roll roofing have a negative impact on the environment due to the production of asphalt, which releases harmful VOCs into the atmosphere.

Q8: Can modified bitumen roofing help reduce noise pollution?

A8: Yes, modified bitumen roofing can absorb sound waves and help reduce noise pollution.

Q9: What is the installation process for modified bitumen roofing?

A9: Modified bitumen roofing can be installed using hot or cold adhesives, torch-applied, or self-adhering.

Q10: Can roll roofing be used as a base layer for other roofing materials?

A10: Yes, roll roofing can be used as a base layer for other roofing materials.

When it comes to choosing between modified bitumen and roll roofing, there are several factors to consider, including durability, cost, installation, performance, and longevity. Ultimately, the best choice will depend on your specific needs and budget. We hope this article has helped you understand the key differences between modified bitumen and roll roofing and make an informed decision for your home.