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Reliable Modified Bitumen Roofing Systems for Commercial Properties
Modified Bitumen Roofing Services
Modified Bitumen roofing is a trusted solution for low-slope and flat roofing applications. It merges the traditional strength of built-up asphalt with modern flexibility and weatherproofing, making it a smart choice for commercial buildings requiring long-term durability.
At 12 Stones Roofing & Construction, we specialize in Modified Bitumen roof installations, repairs, and maintenance. Our certified crews bring years of experience and a deep understanding of what makes these systems last, especially under the intense sun, seasonal storms, and high humidity that define Gulf Coast climates.
Why Choose Modified Bitumen?
Modified Bitumen roofing offers the ideal balance of performance, longevity, and adaptability.
Key Benefits of Modified Bitumen Roofing
- Multi-Layered Waterproofing
This roofing system is built with multiple layers of asphalt-reinforced material, providing excellent resistance to moisture and ponding water on flat or low-slope roofs. - UV and Heat Resistance
When paired with a reflective coating, Modified Bitumen reflects UV rays and lowers rooftop temperatures, extending membrane life and helping reduce cooling costs. - Flexible Installation Options
Choose from torch-applied, cold-adhesive, or self-adhered systems based on your building’s safety, use case, and budget. Each method delivers a seamless, watertight finish. - Durability Under Pressure
The membrane resists punctures, foot traffic, and rooftop equipment stress. It’s an excellent choice for commercial properties with rooftop HVAC systems, solar panels, or frequent service access. - Repairability and Lifespan
With a lifespan of up to 20 years, Modified Bitumen can be easily repaired to extend service life. When compared to full roof replacements, patching seams and coating renewals provide major long-term savings.
Want to compare with other materials? Visit our commercial roofing services page.
roofing
Our Services
Roofing Services
Our crews are trained in the latest safety protocols, material handling, and installation techniques. Each member is vetted, insured, and committed to getting the job done right the first time. We frequently complete OSHA-certified safety training and maintain up-to-date licenses.
- Roof Repair
- Roof Replacement
- Roof Installation
- Roof Inspection
- Emergency Roofing
- Roof Tarping
- Residential Roofing
- Asphalt Shingle Roofing
- Metal Roofing
- Water Damage Repair
- Tile Roofing (Clay / Concrete)
- Slate Roofing
- Commercial Roofing
- TPO Roofing
- Modified Bitumen Roofing
- EPDM Roofing
- Flat Roofing
- Multi-family Roofing
Comparing Modified Bitumen to Other Roofing Types
Feature | Modified Bitumen | TPO Roofing | EPDM Roofing |
UV Protection | High (with coating) | High | Moderate |
Waterproofing | Excellent | Excellent | Good |
Energy Efficiency | Moderate to High | High | Low |
Lifespan | 20+ years | 15–20 years | 20–30 years |
Repairability | Easy | Moderate | Moderate |
Installation Versatility | Torch, Cold, Self-Adhered | Welded/Adhered | Adhesive/Ballasted |
For detailed comparisons or a hybrid system recommendation, visit our flat roofing page.
Tailored Installation for Long-Term Results
Every commercial roof has different challenges. We approach each Modified Bitumen project with care and precision to ensure lasting performance.
Our Installation Process
- Detailed Roof Inspection
We start with a roof inspection to evaluate the deck, slope, insulation needs, and current condition of your roofing system. - Surface Preparation
We clean and prime the substrate, repair any weak spots, and ensure the structure is ready for new material. - Insulation and Base Layer
We install high-R-value insulation to improve thermal performance, followed by a reinforced base sheet. - Membrane Application
Depending on your project, we use one of three methods:- Torch-down: Heated seams for strength and fast installation.
- Cold-applied adhesive: No flames, safer for occupied buildings.
- Self-adhering membrane: Quick, clean, and efficient.
- Sealing Details and Edges
We flash penetrations, parapet walls, and terminations using proper sealants and detail work to prevent leaks. - Reflective Coating (Optional)
For energy efficiency, we apply a reflective surface. According to the U.S. Department of Energy, cool roof coatings can lower rooftop surface temperatures by up to 50°F. - Final Walkthrough & Warranty
We inspect every detail and provide documentation, including warranty coverage and care instructions.
For new construction or roof replacement, visit our roof installation page for details on full-system installs.
Why Trust 12 Stones Roofing & Construction
- Experience with Asphalt-Based Roofing Systems
Our team is highly trained in SBS and APP Modified Bitumen membranes and understands proper substrate prep and sealing. - Local Knowledge and Rapid Response
Based right here in the Pasadena area, we know how to build for Texas heat, wind, and moisture. - Comprehensive Project Support
From helping file roofing insurance claims to arranging flexible roof financing, we help make the process smooth from start to finish. - Warrantied Workmanship
Every project is backed by manufacturer warranties and our roofing warranty program, ensuring accountability long after installation. - Emergency and Preventive Services
Need rapid leak protection? Our crews are trained for immediate response. Planning? We’ll set up a proactive maintenance plan to keep your roof performing year after year.
Learn more about our team and values on the About Us page.
Maintenance Tips for Maximum Lifespan
Modified Bitumen is low-maintenance by design, but scheduled care can add years to its performance.
Maintenance Checklist
- Twice-Yearly Inspections
Seasonal checks help spot seam damage, surface wear, and water pooling early. Our roof maintenance checklist outlines what to look for. - Coating Reapplication
If your system has a reflective coating, we’ll assess wear and recommend reapplication every few years to maintain UV protection. - Drainage and Debris Control
Clogged drains or leaf buildup can cause water intrusion. Regular cleanings prevent costly damage. - Quick Repairs for Small Issues
Our roof repair team can patch splits, reseal flashings, or re-torch seams to avoid full roof failure.
Need to secure the site quickly after a storm? Our 24/7 emergency roofing services include roof tarping to prevent further damage.
Where Modified Bitumen Performs Best
This roofing system is best suited for:
- Industrial and Warehouse Roofs
High durability and heat resistance make it ideal for facilities with heavy rooftop equipment. - Retail Centers and Shopping Plazas
Modified Bitumen is reliable under foot traffic and easy to repair, reducing business interruptions. - Medical, Government, and Schools
With cold-applied options, installation is low-odor and safe for sensitive environments. - Multi-Family Residences
Apartment complexes and condos benefit from leak-resistant membranes and long-term dependability. Learn more on our multi-family roofing page.
Schedule a Free Estimate
Whether you’re replacing a failing flat roof or starting a new construction project, Modified Bitumen is a dependable, long-term solution. Our team at 12 Stones Roofing & Construction is here to guide you from inspection to final walkthrough.
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Frequently Asked Questions
What is Modified Bitumen roofing made of?
Modified Bitumen is a type of asphalt roofing reinforced with either APP (atactic polypropylene) or SBS (styrene-butadiene-styrene) polymers. These materials enhance elasticity, waterproofing, and UV resistance, perfect for handling the extreme heat and seasonal rains we get in Pasadena.
How long does a Modified Bitumen roof last in the Texas Gulf Coast climate?
In the Pasadena area, a properly installed Modified Bitumen roof can last 20 years or more with routine maintenance. Factors like UV exposure, foot traffic, and debris buildup can affect its lifespan, which is why regular inspections are key.
Is Modified Bitumen a good choice for flat or low-slope roofs?
Absolutely. Modified Bitumen is engineered specifically for flat and low-slope roofing systems. It offers strong protection against standing water, punctures, and thermal expansion—making it ideal for warehouses, retail buildings, and multi-family structures throughout Harris County.
What is the difference between SBS and APP Modified Bitumen?
SBS-modified bitumen is more flexible and performs better in cold weather, while APP-modified bitumen offers greater UV resistance and durability in heat. In Pasadena’s hot, humid climate, we typically recommend APP-modified systems paired with reflective coatings to reduce rooftop temperatures.
Can I install a Modified Bitumen roof over an existing system?
In many cases, yes. If the existing roof is in good structural condition, Modified Bitumen can be applied as an overlay. However, a roof inspection by our team is essential to determine if this is a safe and code-compliant option.
How much does Modified Bitumen roofing cost per square foot in Pasadena, TX?
On average, the cost ranges from $5 to $9 per square foot, depending on the system (torch-down vs. self-adhered), insulation needs, and roof complexity. We provide transparent, itemized estimates as part of our free roof installation consultations.
Does Modified Bitumen roofing help with energy efficiency?
Yes, especially when paired with a reflective coating. These “cool roof” systems can lower indoor temperatures by 10–15°F, reducing strain on your HVAC system during our intense Texas summers. The U.S. Department of Energy recognizes Modified Bitumen with cool roof coatings as an energy-efficient option.
What kind of maintenance does a Modified Bitumen roof need?
Routine maintenance includes debris removal, checking seams and flashings, and resealing any cracked areas. We recommend twice-yearly inspections, especially after storm season. You can follow our roof maintenance checklist or let our team handle it with a custom maintenance plan.
Get in Touch with Us
12 Stones Roofing & Construction
6933 Olson Ln, Pasadena, TX 77505
Monday: Open 24 hours
Tuesday: Open 24 hours
Wednesday: Open 24 hours
Thursday: Open 24 hours
Friday: Open 24 hours
Saturday: Open 24 hours
Sunday: Closed
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