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
Roofing Accessories
Accessories are where most projects win or fail at the edges. We coordinate underlayments, leaks, and fastener systems so every primary material can stay stable long term.
System-independentUnderlaymentsLeak protectionSealing details
System Components
Underlayments
Leak barriers
Flashings
Ventilation
Fasteners/sealants
Detail caps
System organization
Underlayments
Water-management layers sized to match primary membrane and edge details.
Ventilation
Airflow control products selected around ridge, soffit, and attic pressure points.
Fasteners and sealants
Connector hardware and compounds that must remain compatible with the primary assembly.
Accessory products
Ventilation baffle kit
Ventilation accessory
Roof ventilation baffle set used for controlled airflow and cavity balance in low-slope and tile transitions. It helps keep insulation behavior stable and reduces moisture accumulation under long deck runs.
- Asphalt assemblies
- Tile and metal transitions
- Airflow balance
- Moisture control
- Consistent installation shape
- Reduced summer heat cycling
- Vent path safety
Sealing caulk set
Sealant kit
Multi-surface sealant and compatibility set for flashings, junctions, and service penetrations. Product choice follows substrate type and local UV stress to maintain long-term sealing behavior.
- Penetrations
- Flashing interfaces
- Fastener lines
- UV-compatible formulas
- Joint compatibility
- Maintenance-friendly formulas
- Penetration safety
- Controlled application
Composite fastener kit
Fastener set
Fastener package matched by head profile, coating, and corrosion tolerance for diverse metals and membrane lines. Correct selection helps maintain joint performance through thermal cycling years.
- Metal roofing
- Tile support frames
- Accessory-heavy assemblies
- Material-compatible heads
- Corrosion-safe options
- Replacement convenience
- Tight spacing guidance
- Long-term joint stability
Manufacturer Options
Builders Hardware Supply
Accessories focused on practical compatibility across shingle, tile, and membrane systems.
Underlayment + starter set
Accessory bundle
A practical bundle of underlayments and starter accessories for projects moving across multiple roof systems. It helps teams avoid shortages while preserving material compatibility during fast-paced builds.
- Mixed-material roofs
- Fast-install projects
- Repair-heavy builds
- Cross-system compatibility
- Coverage continuity
- Project logistics improvement
- Inventory consistency
- Fast installation sequence
Sika
Sealants and membranes designed for edge transitions, flashings, and corrective leak prevention.
Sika Flex Flash Seal
Sealing accessory
A flexible edge seal package that supports complex transitions and difficult junctions where rigid products can fail. We pair it with proper membrane prep and maintenance-safe access.
- Transition-heavy roofs
- Aging junctions
- Edge detail correction
- Flexible transition behavior
- Moisture-resistance focus
- Temperature tolerance
- Penetration-ready compatibility
- Detailed application support
California availability
Availability varies by supplier and branch location. We source materials through California distributors based on your project needs.
Frequently Asked Questions
Which accessories should be installed first?
Sequence is assembly-specific, but ventilation and leak barriers are typically planned before membrane or shingle application. We stage accessories to avoid missed edge details.
Can wrong fasteners damage a premium roof?
Yes. Wrong profiles can create point leaks and premature coat cracking. We avoid mixed-material fastener packages unless explicitly approved by all manufacturers in the stack.
Do accessories need separate supplier planning?
Often yes. Some projects require specialized sealants or flashing details that are not in standard roof shipments. We lock these before installation starts.
Plan from related pages
More materials
Asphalt Shingles
Architectural and designer shingles with complete CA-ready assemblies.
Roof Tile
Concrete and clay tile systems focused on long-term durability and detail control.
Metal Roofing
Standing-seam and exposed-fastener metal systems for low or steep slopes.
TPO / PVC
Single-ply membrane systems for commercial and commercial-style performance.
Need a material recommendation for your project?
Share project geometry, timeline, and budget so we can recommend the right system and manufacturer options.