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flat roof solar mounting structure
flat roof solar mounting structure
flat roof solar mounting structure
flat roof solar mounting structure

Single-Side Ballasted Solar Mounting System

A rail-free, non-penetrating PV mounting solution for flat rooftops. Modules are directly fixed to front and rear legs, with concrete blocks for ballast. Quick to install, lightweight, and ideal for commercial and residential solar projects.

  • Material:

    AL6005-T5 aluminum alloy or ZAM-coated steel
  • Snow Load:

    1.4 kN/m²
  • Wind Load:

    60 m/s
  • Panel Orientation:

    Portrait or Landscape
  • Warranty:

    10 Years
  • Service Life:

    More than 20 Years

The single-side ballasted solar mounting system is a non-penetrative solution designed for flat concrete or brick rooftops. It eliminates the need for rails by directly connecting the PV modules to the front and rear legs via pre-drilled bolt holes. With a simplified structure and fast installation, it is ideal for both commercial and residential rooftop solar projects.

 

solar PV support structure manufacturer

 

Product Specifications:

 

Item Specification
Mounting Type: Non-penetrative, single-side ballasted rooftop mounting
Installation Angle: 5°–15° (customizable based on site conditions)
Applicable Roof Type: Flat concrete roof, brick roof
PV Module Orientation: Landscape (horizontal)
PV Module Type: Framed crystalline modules (mono/poly)
Mounting Method: Direct bolt connection from PV module to front and rear legs
Material – Main Components: AL6005-T5 aluminum alloy or ZAM-coated steel
Fasteners: SUS304 stainless steel
Ballast: Standard concrete blocks (not included)
Wind Load: 40 m/s
Snow Load: 1.4 kN/m²
Structure Height: Front Leg: ~100–150mm / Rear Leg: ~250–350mm (based on tilt angle)
Warranty: 10 years
Service Life: More than 20 years

 

 

Optional Customization:

 

Tilt angle design optimization per project location (sun path analysis)

Anodized aluminum coating or anti-corrosion ZAM coating

Pre-assembled leg components to reduce on-site labor

Integrated grounding/earthing accessories

 

aluminum solar mounting brackets

 

Product Features:

Non-Penetrative Design
Uses concrete ballast blocks to secure the system without damaging the rooftop waterproofing layer — ideal for roofs where penetration is not allowed.

Rail-Free Structure
PV modules are directly fixed to the front and rear legs using pre-punched bolt holes, eliminating the need for mounting rails. This reduces material costs and simplifies installation.

Flexible Ballast Configuration
Ballast blocks can be arranged according to site-specific wind load and roof bearing capacity, ensuring reliable system stability.

Quick Installation & Cost-Efficient
Fewer components and standardized design allow for rapid deployment and reduced labor cost — ideal for large-scale installations.

 

Main Components:

 

Front Leg
Pre-drilled for direct attachment to the module frame. Made from corrosion-resistant aluminum alloy or ZAM (zinc-aluminum-magnesium) coated steel.

Rear Leg
Provides tilt support and connects directly to the back of the module. Together with the front leg, it forms a stable triangular support structure.

Ballast Base Platform
Accommodates concrete blocks to fix the system in place without roof penetration. Designed for ease of installation and long-term durability.

 

rooftop solar ballast system

 

Application Scenarios:

Flat rooftops (concrete, brick, etc.)

Heritage buildings or sites with no-drill policies

Temporary or relocatable PV systems

Industrial and commercial distributed solar projects

 

FAQs:

 

  • Q1: Can this system be used on all types of roofs?
    A: This system is specifically designed for flat rooftops, such as concrete or brick surfaces. It is not suitable for sloped or metal roofs. It offers a non-penetrative solution that preserves roof waterproofing.
  • Q2: Why is no rail used to mount the modules?
    A: To simplify structure, reduce material cost, and speed up installation, this system uses direct attachment. The PV modules are bolted directly to the front and rear legs — no rail is needed.
  • Q3: How is system stability ensured?
    A: Stability is ensured by placing concrete ballast blocks at the base. The number and layout of the blocks are determined by site-specific wind load calculations.
  • Q4: Can the module tilt angle be adjusted?
    A: Yes, the tilt angle can be customized between 5° and 15°, based on local solar radiation, energy output optimization, and site conditions.
  • Q5: Is additional wind protection required?
    A: Normally, concrete ballast alone is sufficient. For high wind zones (>40 m/s), optional wind deflectors or reinforcement accessories are available.
  • Q6: Is it easy to dismantle or relocate the system?
    A: Yes. The rail-free and non-penetrative design makes it easy to dismantle and relocate, ideal for temporary installations or future roof maintenance.
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