Hours
Mon–Fri, 7:30 AM–5:00 PM; Sat, 9:00 AM–1:00 PM
Phone
(408) 363-8052Address
9670 Monterey Rd, Morgan Hill, CA 95037
Modified Bitumen
Modified bitumen remains a strong option for low-slope commercial roofs where membrane layering, primer systems, and drainage behavior are critical. We coordinate base/cap layering by deck condition and exposure.
Self-adheredTorch-downCold-appliedLow-slope systems
System Components
Base/cap
Primers/adhesives
Flashings
Insulation board
Perimeter closures
Seam protection
Attachment support
System organization
Self-adhered
Pressure-controlled self-adhesive systems for projects where open flame use is limited and clean jobsite controls are preferred.
Torch/Down
Torch-applied membranes used where controlled heat bonding and full wetting are part of the required performance profile.
Cold-applied
Cold-adhered pathways used for sensitive conditions where rapid thermal installation methods are constrained.
Accessory products
Self-adhered base sheet
Base membrane
A clean-install base for modified-bitumen assemblies where controlled adhesion and consistent overlap geometry are needed. It supports dry weather continuity and reduces handling risks during phased work.
- Self-adhered projects
- Sensitive environments
- Consistent overlap
- Low odor process
- Stable base geometry
- Moisture-safe handling
- Reduced scheduling windows
Cold-applied bond adhesive
Adhesive kit
Cold bond system for specific conditions where flame bonding is not allowed. This path pairs with mechanical reinforcement at terminations and transitions for reliable edge restraint.
- Cold-applied projects
- Urban constraints
- No open-flame installation
- Transition reinforcement
- Cleaner site profile
- Controlled coverage
- Edge support
Manufacturer Options
Firestone
Modified bitumen profiles with strong field support for complex low-slope projects.
Firestone FlexShield
Modified bitumen membrane
A flexible modified-bitumen profile with robust compatibility for commercial low-slope conditions and mixed penetration points. We specify proper flashings and top-surface cap for long-term continuity.
- Commercial roofs
- Complex transitions
- Phased replacements
- High tear resistance
- Waterproof seams
- Commercial durability
- Repair integration
- Deck transition support
GAF
Modified-bitumen systems that match legacy commercial systems and service workflows.
GAF SureGrip MB
Torch-down membrane
A tough membrane platform with controlled adhesion workflow and clear flash transitions. It is useful in roofs with active transitions and higher runoff concentration near edges and drains.
- Torch-down applications
- Commercial edge-heavy roofs
- Torch-down control
- High adhesion
- Drain-ready profile
- Edge reinforcement
- Service consistency
California availability
Availability varies by supplier and branch location. We source materials through California distributors based on your project needs.
Frequently Asked Questions
Can modified bitumen work on residential low slopes?
Yes. We use it where roof form and drain strategy support compatible detailing. Residential projects still need full deck, transition, and penetrations planning.
Is torch-down always the best modified-bitumen option?
No. Application method should follow safety constraints, deck conditions, schedule, and local code. Self-adhered and cold-applied options are used where heat is constrained.
Do modified-bitumen membranes need periodic reinforcement checks?
They are durable, but all membranes need inspection at perimeter details, flashings, and fastener points as part of maintenance planning.
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Need a material recommendation for your project?
Share project geometry, timeline, and budget so we can recommend the right system and manufacturer options.