Hello Friends, If you’re a property owner in Youngstown and you’re confused between choosing a tar and gravel roof or a modified bitumen roof, you’re not alone. These two roofing systems have been favorites for commercial properties due to their durability, affordability, and decent lifespan. But when it comes down to choosing the right one for your building, the decision can be tricky.
In this detailed blog post, we’ll help you understand:
- The pros and cons of tar and gravel roofs
- The pros and cons of modified bitumen roofs
- Which one might be the best fit for your specific needs
Let’s dive in.
What is a Tar and Gravel Roof?
Tar and gravel roofs have been around since the early 20th century and are known for their layered construction. They consist of layers of asphalt or tar, topped with gravel to create a strong, weather-resistant surface.
Tar and Gravel Roof Life Expectancy: 20-25 years on average, and up to 30+ years with good maintenance.
Pros of Tar and Gravel Roofs
| Advantage | Description |
|---|---|
| Aesthetic Appeal | Looks like a garden or pebble beach and can be used as a functional rooftop area |
| Durable and Sturdy | Dense and can withstand heavy foot traffic if installed with enough layers |
| Pre-Green Roof Ready | Can be converted into green roofing by adding proper structures |
Cons of Tar and Gravel Roofs
| Disadvantage | Description |
| Strong Odors | Post-installation smells can be overwhelming and may require temporary relocation |
| Time-Consuming | Installation can take time, leading to higher labor costs |
| Repair Complexity | Any future repair may require similar lengthy procedures and expenses |
What is a Modified Bitumen Roof?
Modified bitumen (also known as “torch-down roofing”) is a modern upgrade to traditional asphalt roofs. It uses rubberized asphalt melted with a torch to bond to the roofing surface.
Modified Bitumen Roof Life Expectancy: 20-25 years
Pros of Modified Bitumen Roofs
| Advantage | Description |
| Quick Installation | Less labor time and no noxious smells |
| Durable and Foot-Traffic Friendly | High density, tear-resistant material ideal for rooftop access |
| Recyclable Material | Environmentally friendly like tar and gravel roofing |
Cons of Modified Bitumen Roofs
| Disadvantage | Description |
| Fire Risk | Uses open flames for installation which requires permits and safety precautions |
| Requires Certified Contractors | Not every roofer is trained, and certified roofers might charge more |
Head-to-Head Comparison Table
| Feature | Tar & Gravel Roof | Modified Bitumen Roof |
| Lifespan | 20-25 years (30+ with care) | 20-25 years |
| Installation Time | Slow | Faster |
| Aesthetics | Natural, garden-like | Plain, industrial |
| Smell During Installation | Strong | Minimal |
| Foot Traffic Resistance | Moderate to Strong | Strong |
| Eco-Friendliness | Recyclable, Green roof base | Recyclable |
| Fire Risk | Low | High due to torch usage |
| Maintenance | Medium | Low |
| Cost | Medium to High (due to labor) | Medium |
Which Roofing is Best for Your Property?
The answer depends on your priorities.
- If you want a visually appealing, multifunctional rooftop and are okay with longer installation time and strong post-installation smell, tar and gravel may be your best bet.
- If you prioritize quick installation, durability, and lower maintenance, modified bitumen is more suitable.
Also, consider the fire permit process required for modified bitumen roofing. For smaller businesses or office buildings with minimal roof access, modified bitumen might make more sense due to its easier upkeep.
Final Thoughts
While both systems have their benefits and limitations, there are other options in the market today as well:
- EPDM Roofing – a rubber-based roofing membrane with easy installation and decent lifespan.
- TPO Roofing – a heat-reflective and energy-efficient alternative.
- Spray Polyurethane Foam (SPF) – can seal and insulate the roof while increasing lifespan significantly.
If you’re interested in long-term solutions, systems like Conklin Spray Foam Roofing can extend roof lifespan by decades.
So friends, whether you’re going with tar and gravel, modified bitumen, or another modern solution, always consult a certified roofing contractor to ensure a safe and effective installation.
Have you had any experience with tar and gravel or modified bitumen roofs? Share your story to help other property owners make informed decisions.