Views: 0 Author: Site Editor Publish Time: 2025-07-29 Origin: Site
Preliminary Preparation: According to the PV system design scheme, determine the specifications, installation positions, and quantities of L-feet and guide rails. Inspect the color steel tile roof to ensure the roof structure is intact and the positions of purlins are clear.
L-foot Installation: Mark the installation positions of L-feet on the color steel tiles as per design requirements. The positions should correspond to the purlins under the color steel tiles to ensure reliable load-bearing. Then firmly fix the L-feet to the purlins of the color steel tiles with bolts. When tightening the bolts, ensure uniform force to avoid damaging the color steel tiles.
Guide Rail Installation: Place the guide rails on the installed L-feet and tightly connect the guide rails to the L-feet through connectors (such as bolts, clips, etc.). The spacing between guide rails must be set strictly in accordance with the size and stress requirements of PV modules, generally ranging from 1 to 2 meters, to ensure stable stress after the installation of PV modules.
Inspection and Adjustment: After installation, check whether the connection between L-feet and guide rails is firm and whether the guide rails are horizontal. Make timely adjustments if there is any deviation.
Simple structure, convenient installation, and short construction period.
Relatively low cost, and materials are easy to purchase.
Less damage to color steel tiles, and the original structure of color steel tiles will not be extensively damaged during installation.
The material and specification of L-feet and guide rails must meet the design requirements to ensure their load-bearing capacity meets the needs of the PV system.
Before installation, inspect the purlins of the color steel tile roof to ensure they can bear the weight of PV brackets and modules.
The tightening force of bolts should be moderate. Too loose will affect the stability of the connection, and too tight may damage the L-feet or color steel tiles.
Positioning and Drilling: According to the design drawings, determine the installation positions of double-headed bolts on the color steel tiles, which should correspond to the purlins. Use professional drilling equipment to drill holes on the color steel tiles, and the diameter of the holes should match the diameter of the double-headed bolts.
Double-headed Bolt Installation: Pass the double-headed bolts through the pre-drilled holes, and fix the bolts to the purlins with nuts and washers under the color steel tiles. Ensure the bolts are perpendicular to the surface of the color steel tiles and firmly fixed.
Guide Rail Installation: Put appropriate connectors on the top of the double-headed bolts, place the guide rails on the connectors, and fasten the guide rails to the double-headed bolts with nuts. Adjust the levelness and spacing of the guide rails to meet the installation requirements.
Tightening Inspection: Inspect all connection parts to ensure that fasteners such as double-headed bolts and nuts are tightened in place, and the guide rails are installed stably.
Firm and reliable connection, strong load-bearing capacity, and can effectively resist external forces such as wind load and snow load.
High installation accuracy, and the levelness and spacing of guide rails are easy to control.
When drilling, accurately align with the position of the purlins to avoid unstable bolt fixation due to drilling position deviation.
The material and specification of double-headed bolts should be selected according to the load of the PV system to ensure their strength meets the requirements.
During installation, 做好 waterproof treatment for the drilling parts of color steel tiles, and special waterproof gaskets or sealants can be used to prevent rainwater leakage.
Clamp Selection and Positioning: According to the model and specification of color steel tiles, select appropriate clamps. Determine the installation positions of clamps on the peaks or valleys of color steel tiles to ensure that the clamps can firmly clamp the color steel tiles after installation.
Clamp Installation: Place the clamps at the determined positions, and tighten the fastening bolts of the clamps with a wrench to make the clamps tightly clamp the color steel tiles. Pay attention to applying uniform force to avoid deformation of the color steel tiles due to excessive force.
Guide Rail Installation: Place the guide rails on the clamps, and fix the guide rails to the clamps through connectors. Adjust the levelness and spacing of the guide rails to meet the design requirements.
Inspection and Reinforcement: After installation, check the clamping force of the clamps and the connection of the guide rails, and reinforce the loose parts.
No need to drill holes on color steel tiles, avoiding damage to color steel tiles, which is beneficial to protecting the original structure and waterproof performance of the roof.
Flexible and convenient installation, and the positions of clamps and guide rails can be adjusted at any time according to the layout of PV modules.
Strong compatibility and applicable to various types of color steel tile roofs.
The selection of clamps must match the type of color steel tiles to ensure firm clamping.
When installing clamps, pay attention to uniform force to avoid deformation of color steel tiles.
Regularly check the clamping force of clamps to prevent loosening due to long-term use.
Measurement and Positioning: According to the size and installation requirements of PV modules, measure and mark the installation positions of mini guide rails on the color steel tiles.
Connector Installation: Fix the connectors at the marked positions on the color steel tiles by means of bolts or clamps to ensure the connectors are installed firmly.
Mini Guide Rail Installation: Place the mini guide rails on the connectors, fix the guide rails to the connectors with bolts, etc., and adjust the levelness and spacing of the guide rails.
Module Installation: Install the PV modules on the mini guide rails and fix them with special clips or bolts.
Small in size, light in weight, low requirements on roof load, and more convenient and labor-saving during installation.
Saves installation space and is suitable for color steel tile roofs with limited installation space.
High aesthetics, and the overall layout is relatively compact after installation.
The load-bearing capacity of mini guide rails is relatively limited. When selecting, reasonable selection should be made according to the weight of PV modules and local load conditions.
During installation, ensure the levelness of mini guide rails to ensure the installation quality of PV modules.
The installation of connectors should be firm and reliable to prevent loosening or displacement of mini guide rails during use.
Installation Method | Structural Features | Advantages | Applicable Scenarios | Precautions |
L-foot and guide rail | Composed of L-feet and guide rails, with a simple structure | Simple structure, convenient installation, low cost | Most color steel tile roofs with gentle slopes, new buildings | L-feet and guide rails meet material and specification requirements, moderate bolt tightness |
Double-headed bolt and guide rail | Composed of double-headed bolts, nuts, washers, and guide rails | Firm connection, strong load-bearing capacity, high installation accuracy | Roofs with high load-bearing requirements, large slopes, or in windy areas | Drilling aligned with purlins, good waterproof treatment |
Clamp and guide rail | Composed of various types of clamps and guide rails | No drilling, protects the roof, flexible installation | Various color steel tile roofs, old roofs or roofs with high waterproof requirements | Clamp selection matches, uniform force application |
Mini guide rail | Composed of small and lightweight mini guide rails and connectors | Small size, light weight, saves space, high aesthetics | Roofs with small load and limited installation space | Reasonable selection, ensure levelness, firm connectors |
