Engineered Rooftop Support Systems for Demanding Projects
Protect roof membrane integrity while securing heavy chillers, HVAC ducts, solar arrays, and high-voltage cable runs. Featuring Lonsonstrut lightweight, ultra-high-strength aluminum alloy and hot-dip galvanized modular framing.
Why Traditional Rooftop Installations Fail Over Time
Drilling anchors into roofing decks inevitably leads to water penetration, warranty invalidation, and costly thermal bridge leaks. Lonsonstrut engineered modular rooftop supports eliminate structural damage while withstanding harsh weather extremes
Membrane Punctures & Leaks
Direct anchor drilling into single-ply TPO, PVC, or bitumen membranes voids manufacturer warranties and triggers difficult-to-trace water intrusion into the insulation layer.
Severe Wind Uplift & Vibration
Unballasted or poorly engineered frames migrate across the roof deck during storms, causing pipe fracture, electrical arc faults, and structural fatigue.
Excessive Roof Deadweight
Heavy structural welded steel I-beams demand costly cranes and overload older commercial roof structural trusses, limiting rooftop equipment density.
Modular Rooftop Support Assemblies
HVAC & Chiller Skids
Customizable modular platforms designed to support heavy air handling units, chillers, and condensers with integrated anti-vibration pads.
- Load: Up to 4,500 kg/point
- Integrated spring dampeners
- Leveling screw adjustment
Multi-Tier Pipe Bridges
Elevated support bridges managing chilled water, natural gas, refrigerant lines, and steam pipes with independent thermal slide guides.
- 1 to 4 tier configurations
- PTFE low-friction sliders
- Spans from 600mm to 3000mm
Cable Tray & Walkways
Safe maintenance pathways, step-over stairs, and heavy cable ladder runs for data centers, industrial complexes, and commercial facilities.
- Anti-slip aluminum gratings
- OSHA/EN ISO compliant railings
- Modular clip-on step modules
Duct & Exhaust Frame
H-frame and box-frame duct supports engineered to absorb aerodynamic vibrations and resist high rooftop wind sail area forces.
- Telescopic height adjustment
- Direct strut channel clamping
- Heavy-duty cross-brace kit
Rooftop Support Selection & Specification Guide
Match your specific rooftop equipment, membrane type, and site environmental factors with verified Lonsonstrut structural configurations.
| Application Type | Recommended Base | Primary Material Alloy | Standard Load Limit | Wind Rating | Thermal Motion |
|---|---|---|---|---|---|
| Heavy Chillers / VRF Units | 500×500mm Cast SBR Base + Mat | Alloy 6082-T6 / HDG Q355 | 35 kN per footing | Up to 220 km/h | Fixed + Spring Isolation |
| Chilled / Hot Water Pipe Runs | 300×300mm Rubber Foot with Strut | Alloy 6063-T6 / HDG 41x41 | 7.5 kN per post | Up to 180 km/h | ±50mm Slider Roller |
| Solar Array & Inverter Skids | Aerodynamic Ballasted Base Plate | High-Strength 728 MPa AL | 12 kN per module | Up to 240 km/h | Slotted Mechanical Fix |
| Maintenance Walkways & Steps | Linear Continuous Rubber Strip | Serrated Aluminum Grating | 5.0 kN/m² Live Load | Up to 160 km/h | Interlocking Expansion |
| Data Center Cable Trays | Non-Magnetic High-Density Base | Non-Ferromagnetic Alloy | 9.0 kN per span | Up to 190 km/h | Zero Eddy Current Loss |
Engineered to Outperform Traditional Steel on the Roof
Rooftops represent the harshest environment in commercial building infrastructure—combining UV radiation, intense thermal expansion cycles, high wind buffeting, and standing water.
Ultra-High Tensile Strength
Our proprietary aluminum alloy profiles achieve yield strengths up to 604 MPa and tensile strengths up to 728 MPa, matching heavy steel while eliminating unnecessary tonnage.
Salt-Spray Certified
Naturally forming dense aluminum oxide films, augmented by anodized or 80μm hot-dip galvanized finishes, ensure zero cross-sectional loss over 30+ years of coastal UV exposure.
Slip & Pull-Out Resistance
Patented 3D wedge locking strut channels and serrated channel nuts prevent fastener back-out caused by continuous rooftop air handler and fan motor vibrations.
Engineered for Critical Rooftop Environments
From mission-critical hyperscale data centers to coastal manufacturing hubs and commercial high-rises.
Hyperscale Data Centers
Non-ferromagnetic aluminum frames prevent inductive heating and eddy-current losses around high-amperage roof generator busways and dry-cooler manifolds.
Read Data Center Case Study →Coastal & High-Salinity Hubs
Marine-grade coatings and passivation provide unmatched protection against aggressive coastal fog, eliminating the need for periodic re-painting or rust scraping.
Review Alloy Standards →Solar PV & Hybrid Roofs
Ballasted, non-penetrating solar framing supports modules and integrated cable raceways with aerodynamic deflector plates to resist uplift.
Explore Solar Mounting →Cold Storage & Food Processing
Aluminum alloys retain ductile strength even at sub-zero temperatures without exhibiting the extreme low-temperature brittleness of carbon steel.
Industrial Facility Solutions →Hospital & Healthcare MEP
Critical oxygen piping, medical exhaust, and emergency generator fuel supply lines secured with zero hot-work welding on occupied hospital roofs.
Healthcare MEP Framing →Retrofits on Older Buildings
Lightweight frames distribute loads evenly across existing joists and purlins without exceeding the building's historic roof reserve capacity.
Submit Structural Specs →End-to-End Technical & Pre-Fabrication Support
Lonsonstrut provides more than catalog hardware. Our in-house engineering team works directly with MEP contractors, EPCs, and structural consultants to deliver fully calculated, pre-cut, and kit-packaged rooftop support assemblies.
BIM 3D Modeling & Clash Detection
We provide parametric Revit families and AutoCAD 3D blocks to integrate rooftop support paths seamlessly into building information models.
Structural Load & Wind Calculation Reports
Every proposal includes point load distribution calculations, overturning moment checks, and wind uplift resistance verification stamped for building authority reviews.
Factory Pre-Assembly & Jobsite Kitting
Channels are precision cut, deburred, labeled, and kitted per roof grid line to reduce field assembly hours by up to 60%.
Technical Review Checklist Fast 24-48h Turnaround
Send us your equipment schedule and roof layout drawings to receive an initial engineering sizing package.
Frequently Asked Questions
Common technical, structural, and procurement inquiries regarding Lonsonstrut modular rooftop support systems.
Will non-penetrating rubber bases damage or chemically degrade TPO/PVC roof membranes?
No. Lonsonstrut rooftop bases are manufactured from high-density recycled SBR and EPDM with vulcanized compound stabilization. For plasticizer-sensitive single-ply membranes, we supply dedicated protective separation isolation mats to ensure complete compatibility and preserve manufacturer roof warranties.
How do you prevent freestanding rooftop frames from blowing off in high-wind regions?
We conduct aerodynamic and uplift overturning calculations based on regional ASCE 7 (US) or EN 1991-1-4 (Eurocode) standards. Stability is achieved through calibrated deadweight ballast trays, aerodynamic wind deflectors, and wide-stance footprint geometry without ever penetrating the roof deck.
Can high-strength aluminum strut channels be combined with hot-dip galvanized steel components?
Yes, provided direct galvanic coupling is avoided. We provide isolation pads, nylon washers, or 304/316 stainless steel fastening hardware to prevent galvanic corrosion between dissimilar metals in humid outdoor rooftop conditions.
What is your lead time and supply capability for large project volumes?
With our 133,000 m² automated manufacturing facility and an annual production capacity of 100,000 metric tons, standard modular strut components are stocked for rapid container dispatch. Custom pre-fabricated frames are typically manufactured and kitted within 2 to 3 weeks following drawing approvals.
How do Lonsonstrut support systems accommodate rooftop thermal expansion and contraction?
Our modular frame designs incorporate slotted channel connections, sliding pipe guides, and flexible bracket couplings. These allow mechanical piping, cable trays, and ductwork to expand and contract freely across seasonal temperature differentials without transferring damaging shear stress to the rooftop membrane.
Are customized pre-assembled modular kits and OEM/ODM fabrication available?
Yes. We provide complete OEM/ODM production according to project blueprints or custom specifications. Frames can be precision cut, pre-punched, and pre-kitted into packaged assembly bundles to minimize field sorting and drastically reduce on-site assembly time.
How does proprietary aluminum alloy compare to standard Q235 steel in weight and strength?
Our proprietary high-strength aluminum alloy provides approximately one-third the weight of traditional steel, significantly reducing dead loads on the building roof. Specially engineered structural components reach tensile strengths up to 728 MPa and yield strengths up to 604 MPa.
What engineering documentation, load calculations, and certifications are provided?
Every shipment can be accompanied by complete Mill Test Certificates (MTC), dimensional inspection reports, and salt spray test records. Our in-house engineering team also provides structural load calculations, slip-resistance validation, and static FEA reports upon request.