Quick Mount PV Brand Guide: QBase, Flashing Systems, and Waterproof Roof Attachments
Quick Mount PV is a specialist in flashed roof attachments for solar installations, known for its patented elevated water seal technology and a product line that covers virtually every residential and commercial roof type. Founded in 2006 and now part of the Esdec Motion Group alongside IronRidge and EcoFasten Solar, Quick Mount PV has established itself as the go-to brand for installers who refuse to compromise on waterproofing. This guide covers the company's product lines, certifications, warranty terms, and technical specifications.
At PES Supply, we stock 50,000+ SKUs from 169 authorized brands, including Quick Mount PV's full attachment line. Standard delivery is 7-10 business days. Browse our Quick Mount PV collection to get started.
Company Overview
Quick Mount PV was founded in 2006 by Stuart and Claudia Wentworth in Walnut Creek, California. The company emerged from the founders' experience as solar installers and general contractors who observed too many rooftop mounts that were doomed to failure due to poor waterproofing. The Wentworths pioneered the patented QBlock Elevated Water Seal, which raises the waterproofing barrier above the roof surface, and the resulting Classic Composition Mount became the industry's best-selling solar roof mount.
In September 2019, Quick Mount PV was acquired by Netherlands-based Esdec Motion Group, joining IronRidge and EcoFasten Solar to form the largest rooftop solar mounting and racking hardware group in the United States. Quick Mount PV continues to operate as a separate entity with its own product lines and sales channels, now managed alongside IronRidge. The company maintains its headquarters at 2700 Mitchell Drive, Walnut Creek, CA 94598, and its manufacturing is ISO 9001:2015 certified.
Quick Mount PV's market position is that of a premium waterproofing specialist. While other brands focus on rails and clamps, Quick Mount PV focuses exclusively on the critical interface between the solar array and the roof structure—the attachment point where water intrusion risk is highest.
Current Product Lines
QBase Mount System
The QBase is Quick Mount PV's flagship base-and-post mounting system, representing the strongest off-the-shelf mechanical mount available. The base is cast from A360.1 cast aluminum with four gussets for structural reinforcement, supporting 2 or 4 structural fastener attachments. The QBase is available in mill, clear anodized, and bronze anodized finishes.
QBase posts are available in eight heights: 3.25", 4.5", 6.5", 8.5", 11.5", 12.5", 14.5", and 17.5". When combined with the QBase, the net height increases by 0.5". The QBase and posts are sold as separate SKUs in box quantities of 20 each.
QBase variants include:
- QBase Composition Mount (QMNC): For new construction or roof replacement on composition/asphalt shingle. Features a spun aluminum cone flashing (12" x 12") with no welds or seams. Average pullout: 3,031 lbs in Douglas fir; average shear: 1,972 lbs.
- QBase Low Slope Mount: For TPO, PVC, EPDM, built-up asphalt, and other non-metal low-slope roofs. Attaches to wood, concrete, or steel substrates with appropriate fasteners.
- QBase Universal Tile Mount: For tile roof applications, replacing a single tile with a flashed mounting base.
QBlock Elevated Water Seal
The QBlock is Quick Mount PV's patented elevated water seal technology, which raises the waterproofing barrier up off the roof surface. By attaching the QBlock to an all-aluminum flashing, installation is fast and simple, requiring only a single bolt. The QBlock is integrated into the Classic Composition Mount and other attachment products.
QSpacer
The QSpacer is a standoff spacer component used to achieve additional height clearance between the roof surface and the racking rail, accommodating various roofing profiles and insulation thicknesses. It integrates with the QBase system for projects requiring elevated mounting.
Conduit Mount
Quick Mount PV's Conduit Mount provides a flashed, watertight support for conduit runs across rooftops. Designed to slide under roofing material and attach to rafters, it eliminates unprotected penetrations for electrical conduit routing. Compatible with standard EMT conduit sizes.
Classic Composition Mount
The Classic Comp Mount remains the industry's best-selling solar roof mount, featuring the QBlock elevated seal on an all-aluminum flashing. Designed for retrofit installations on existing composition shingle roofs.
QHook
The QHook is a tile roof hook attachment that slides under the tile without requiring tile removal or cutting. It attaches directly to the rafter and provides a raised mounting point for rail attachment.
E-Mount
The E-Mount is an elevated mount for composition shingle roofs, providing additional clearance between the roof and the rail for improved airflow and wiring access.
Recent Releases (2025-2026)
Under Esdec ownership, Quick Mount PV's product line has been integrated with IronRidge's design and distribution infrastructure. The QBase system has been certified for use with IronRidge XR Rail systems, allowing installers to specify mixed-brand systems within the IronRidge Design Assistant. The QBase product line has been repackaged for installer-friendly handling with OSHA-compliant box weights and dimensions. Recent updates include expanded Florida and LA approval certifications for the QBase mount, and continued ISO 9001:2015 manufacturing certification at the Walnut Creek facility.
Certifications & Listings
- UL 2703: QBase mounts are certified for use with UL 2703 listed racking systems, including IronRidge XR Rails.
- IBC Compliant: 100% International Building Code compliant structural attachments.
- Florida & LA Approvals: QBase is the only mount holding both Florida (HVHZ) and Los Angeles approval certifications.
- ISO 9001:2015: Manufacturing facility certified to ISO 9001:2015 quality management standards.
- ASCE 7: Structural design compliant with ASCE 7 wind and snow load standards.
- BABA Compliance: Quick Mount PV's US-manufactured products support Build America, Buy America requirements for federally funded projects.
Warranty Terms
Quick Mount PV offers a 25-year limited product warranty on structural components, covering defects in materials and workmanship. The warranty period begins from the earlier of: (1) the date installation is completed, or (2) thirty days after purchase by the original owner. The anodized finish is covered by a separate 5-year finish warranty against visible peeling, cracking, or chalking under normal atmospheric conditions. The warranty is transferable to a new owner of the entire PV system, provided the mounting product remains in its original installation location. Quick Mount PV will repair or replace, at its option, any defective product within the warranty period.
Popular Products at PES Supply
| Model | Category | Key Specs | Application |
|---|---|---|---|
| QBase Composition Mount (QMNC-A-12) | Roof attachment | 12" x 12" cone flashing, 3.25" post, 3,031 lbs pullout | Composition shingle, new construction/re-roof |
| QBase Low Slope Mount | Low-slope attachment | Wood/concrete/steel substrate, 3" lag bolts included | TPO, PVC, EPDM, built-up asphalt flat roofs |
| QBase Universal Tile Mount | Tile roof attachment | Tile replacement flashing, cast aluminum base | Concrete and clay tile roofs |
| Classic Comp Mount | Retrofit attachment | QBlock elevated seal, single-bolt install | Existing composition shingle roofs |
| QBase Post (various heights) | Standoff post | 8 heights from 3.25" to 17.5", A360.1 cast aluminum | Custom height requirements for all QBase systems |
Technical Comparison: Quick Mount PV vs. Competitors
| Feature | Quick Mount PV | IronRidge (FlashFoot2) | Unirac (Flashloc DUO) |
|---|---|---|---|
| Primary Focus | Flashed attachments only | Full racking + attachments | Full racking + attachments |
| Seal Technology | QBlock elevated water seal (patented) | Elevated encapsulated seal | Triple seal (EPDM) |
| Flashing Type | Spun aluminum cone (no seams) | Flat plate with raised collar | Diecast aluminum base |
| Structural Capacity | 3,031 lbs pullout (Doug fir) | Varies by attachment model | 495 lbs uplift (rafter), 135 lbs (OSB) |
| Fastener Options | 2 or 4 lag screws, multiple substrates | Single lag bolt | 6 wood screws (deck) or 2 (rafter) |
| Florida/LA Approval | Yes (both) | Varies | Varies |
| Warranty | 25 yr structural / 5 yr finish | 25 years | 25 years |
Installation Notes
Roof Type Compatibility
- Composition shingle (new construction): QBase Composition Mount (QMNC) with spun cone flashing. Install during roofing phase between trades.
- Composition shingle (retrofit): Classic Comp Mount with QBlock elevated seal. Single-bolt installation through existing shingles.
- Tile roofs: QBase Universal Tile Mount or QHook. Tile replacement flashing or hook-under-tile method.
- Low-slope/flat roofs: QBase Low Slope Mount. Compatible with TPO, PVC, EPDM, built-up asphalt. Core drill through membrane and insulation to reach substrate.
- Metal roofs: QBase with appropriate fasteners for through-fastened metal.
- Shake/slate: QBase Universal Mount with appropriate flashing.
Tools Required
- Tape measure, chalk line, stud finder
- Drill with 7/32" pilot bit (for lag bolt holes)
- 1/2" deep socket
- Caulking gun with compatible sealant
- Roofing bar (for lifting shingles/tiles)
- Core drill (4" for low-slope mount installations)
Installation Process (QBase Composition)
The QBase is designed for a 3-step process that integrates with roofing workflow:
- Layout and drill: Mark rafter centers and rail location with chalk lines. Align QBase vertical holes over center rafter mark. Drill 2 each 7/32" pilot holes into rafter. Fill pilot holes with sealant.
- Secure QBase: Seat the grade 8 cap screw through the bottom of the QBase. Place QBase over drilled holes and secure lag screws to a solid, snug fit. Secure post to QBase by turning onto the captive base plate bolt.
- Flash and seal: Allow roofing to proceed to the point that flashing should be installed. Install spun cone flashing over the mount. Apply sealant where post and flashing meet. Install EPDM counter flashing collar.
Structural Performance
QBase lag pull-out capacities in typical lumber (5/16" shaft, 3" thread depth):
- Douglas Fir/Larch: 1,330 lbs
- Southern Pine: 1,535 lbs
- Hem-Fir: 1,060 lbs
- SPF (Spruce-Pine-Fir): 1,025 lbs
Frequently Asked Questions
1. What makes the QBlock Elevated Water Seal different from standard flashing?
The QBlock raises the waterproofing barrier above the roof surface rather than relying on a flat seal at the roof deck level. This means water shedding down the roof cannot reach the seal even if the flashing is compromised. The elevated seal is integrated with an all-aluminum spun cone flashing that has no welds or seams to rust or rot.
2. Can QBase mounts be used with any racking system?
QBase mounts are designed with a universal post-top connection that accepts standard rack mounting hardware. They are certified for use with IronRidge XR Rail systems and are compatible with most major racking brands. The QBase uses a 5/16"-18 grade 8 cap screw for rail attachment, which is an industry-standard interface.
3. What is the difference between QBase Composition and Classic Comp Mount?
The QBase Composition Mount (QMNC) is designed for new construction or roof replacement, where the flashing can be installed during the roofing phase as shingles are being laid. The Classic Comp Mount is designed for retrofit installations on existing roofs, where the QBlock elevated seal is installed through existing shingles without removing them.
4. How does the QBase Low Slope Mount handle different substrates?
The QBase Low Slope Mount ships with 3" lag bolts for wood substrates. For concrete substrates, use 1/4" concrete screws. For corrugated steel substrates, use 5/16"-18 UNC machine bolts. The mount is designed to core through roof insulation to reach the structural substrate, with the core hole backfilled with insulation and sealed.
5. Is the Quick Mount PV warranty transferable?
Yes. The 25-year limited product warranty is transferable to a new owner of the entire photovoltaic system, provided the mounting product remains intact in its original place of installation. The warranty may not otherwise be assigned or transferred.
Shop Quick Mount PV at PES Supply
PES Supply carries the complete Quick Mount PV product line, including QBase mounts and posts, Classic Comp Mounts, QHooks, Conduit Mounts, and QSpacers. With 50,000+ SKUs from 169 authorized brands, we provide the roof attachment hardware and racking components you need. Orders typically arrive within 7-10 business days.
Browse all Quick Mount PV products at PES Supply →
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Written by the PES Supply Editorial Team. Last updated July 2026.