Understanding Why Concert Roof Structures Require More Vertical Space Than LED Displays
When audiences watch a large concert, they often notice that the stage roof is much higher than the LED screen installed at the back of the stage.
At first glance, this may seem inefficient.
If the LED screen is the main visual background, why not simply extend it upward and use the entire roof height?
The answer is that the roof and the LED screen serve completely different engineering purposes.
The LED screen is designed primarily for visual communication.
The roof structure is designed primarily for structural support, rigging, lighting, sound systems and production operations.
Therefore:
The roof is designed for the rigging system, not for the LED screen.
During the construction of the 2026 Guangzhou Pearl Beer Festival Music Festival, we observed a large hydraulic roof stage approximately 20 metres high, while the LED screen occupied only part of the available vertical space beneath the roof.
This height difference was not wasted space. It was a carefully planned engineering requirement created by the interaction between structure, production equipment and safety considerations.
Engineering Observation
During this project, the main stage consisted of:
A hydraulic lifting roof structure.
Steel roof columns and beams.
Aluminium roof grid components.
Large LED screens.
Suspended lighting systems.
Line array speaker systems.
Rigging points for future equipment installation.
The roof structure extended significantly above the LED screen area.
This created a vertical production zone between the roof and the visible performance background.
That space was essential for multiple technical functions.
The complete construction process of this type of structure is discussed in How Is a Large Concert Main Stage Constructed?.
The Roof Supports Much More Than the LED Screen
One of the most common misunderstandings about concert stages is assuming that the roof exists mainly to hold the LED screen.
In reality, LED screens are usually independent structures positioned at the rear of the stage.
The roof system supports a much wider range of production equipment, including:
Moving head lighting fixtures.
Follow spots.
Hanging LED equipment.
Stage effects.
Motorised rigging systems.
Curtain systems.
Line array speakers.
Safety equipment.
The roof therefore functions as a three-dimensional production platform.
Its height is determined by the requirements of the entire show, not by the height of one visual element.
The engineering principles behind roof structures and suspended loads are closely related to the design logic explained in Roof Truss Systems.
Why Can't the LED Screen Reach the Roof?
A simple question is:
If more LED area creates a bigger visual effect, why not install the LED screen all the way to the roof?
There are several practical reasons.
1. Maintenance Space Behind the LED Screen
Large LED screens require continuous technical access.
Behind the screen, technicians need space for:
Cable connections.
Signal testing.
Module replacement.
Power maintenance.
Structural inspection.
If the LED screen directly occupied the entire roof height, technicians would lose the necessary working space behind the display.
A professional stage design must consider not only what the audience sees, but also how the system can be installed, maintained and repaired.
2. The LED Screen and Rigging System Have Different Requirements
An LED screen mainly requires:
Stable vertical support.
Accurate alignment.
Safe fixing points.
A roof system requires:
Large load capacity.
Rigging flexibility.
Equipment movement space.
Safety margins.
Combining both into one structure would reduce flexibility.
Instead, professional stage systems separate visual structures from overhead production structures.
This modular approach is similar to the principles used throughout Stage Truss Systems, where different structural functions are separated according to their requirements.
Lighting Requires Vertical Space
One of the most important reasons for additional roof height is lighting.
Concert lighting is not only about brightness.
It is about direction, angle and depth.
Professional lighting designers require different positions for:
Front lighting.
Top lighting.
Back lighting.
Special effects lighting.
If the roof was too low, lighting fixtures would have limited angles and would mainly illuminate performers horizontally.
A higher roof allows lighting designers to create more natural three-dimensional lighting effects.
For this reason, large concert roofs often function as lighting structures as much as weather protection systems.
The relationship between structural systems and lighting equipment is also reflected in Lighting Truss Systems.
Line Array Speakers Also Require Additional Height
Another important factor is sound reinforcement.
Large concerts usually suspend line array speakers from the roof structure or adjacent support systems.
These speakers need sufficient height because their position influences:
Audience coverage.
Sound projection distance.
Vertical dispersion.
Listener experience.
A speaker positioned too low may be blocked by audience members or stage equipment.
A higher suspension point allows sound engineers to achieve more consistent coverage across the venue.
The role of distributed sound systems is explained further in How Is a Stadium Concert Sound System Distributed?.
Hydraulic Roof Systems Need Additional Lifting Space
The roof observed during this project used a hydraulic lifting system.
This means the roof was not simply assembled at its final height.
Instead:
The first roof sections were assembled at a lower position.
Hydraulic cylinders lifted the structure gradually.
Additional column sections were installed.
The roof was raised to its final operating height.
This construction method requires sufficient vertical planning.
The roof height must consider:
Column extension.
Hydraulic lifting process.
Rigging installation.
Final equipment positions.
Therefore, the final roof height is determined by the entire construction and operation process.
The Roof Height Also Supports Safe Rigging
Before lighting and production equipment are installed, rigging points must be prepared.
These may include:
Safety cables.
Hoisting points.
Motor systems.
Manual chain hoists.
Suspension hardware.
The vertical space between the roof and LED screen provides room for these systems.
Without sufficient separation, equipment would be crowded together, increasing installation difficulty and safety risks.
In professional event engineering, available vertical space is an important resource.
Wind Load and Structural Considerations
Although the visual appearance of a higher roof is impressive, height also introduces additional structural challenges.
A taller structure experiences:
Increased wind exposure.
Larger overturning moments.
Greater requirements for stability systems.
Therefore, roof height cannot simply be increased without limitation.
Engineers must balance:
Production requirements.
Structural safety.
Transportation limitations.
Installation efficiency.
This principle applies to all temporary structures, where every design decision represents a balance between performance and practicality.
Roof Height vs LED Height: Different Design Goals
The difference between roof height and LED height can be summarised as follows:
Component
Primary Purpose
Main Design Considerations
Roof Structure
Support production equipment
Load capacity, rigging, lighting, safety
LED Screen
Deliver visual content
Visibility, resolution, audience viewing angle
Lighting System
Create performance atmosphere
Beam angle, position, coverage
Line Array System
Deliver sound
Height, coverage, acoustic performance
The roof and LED screen are not competing structures.
They are complementary systems designed for different purposes.
Why Does the Space Between Roof and LED Matter?
The empty space above the LED screen is actually a highly functional production zone.
It provides room for:
Lighting fixtures.
Speaker suspension.
Rigging equipment.
Cable management.
Maintenance access.
Safety systems.
Although audiences may see it as empty space, engineers see it as working space.
Engineering Principle
The design of large concert stages follows a simple but important principle:
Visible elements are designed for the audience. Hidden structures are designed for the production system.
The LED screen represents the visible experience.
The roof represents the invisible engineering infrastructure that makes the experience possible.
Both must work together.
Conclusion
The reason a concert roof is much higher than the LED screen is not because the design is inefficient.
The additional height is required because the roof supports far more than the visual display.
It provides space for:
Lighting systems.
Line array speakers.
Rigging equipment.
Safety systems.
Maintenance access.
Hydraulic lifting operations.
During the Guangzhou Pearl Beer Festival Music Festival project, the approximately 20-metre-high roof structure demonstrated how modern concert stages are designed as complete production environments rather than simple platforms.
The LED screen creates the visual centre of the performance.
The roof creates the engineering space that allows the entire production system to function safely.
Understanding this difference helps explain one of the fundamental principles of concert engineering:
The roof is not built around the LED screen. The entire stage system is built around the needs of the production.
The DragonStage 11x6x7m Covered Concert Roof Truss System combines an 11m-wide × 6m-deep × 7m-high main stage roof with two 2m side PA speaker wings.
The illustrated configuration features a pitched aluminum roof framework with a blue roof canopy, four main support towers, two independent speaker towers, and a matching modular stage platform with guardrails and dual stair access.
Designed for concerts, festivals, live performances, community events, and temporary outdoor productions requiring a coordinated stage roof and separate speaker-support positions.
The DragonStage 10x5x7m Aluminum Pitched Roof Truss System is a modular concert-stage structure featuring a 10m-wide × 5m-deep × 7m-high main roof frame with 2m side speaker wings on both sides.
The configuration combines a pitched aluminum roof-truss framework, four main support towers, two additional side speaker towers, and a matching modular stage platform as illustrated. It is designed for concerts, festivals, live performances, community events, and temporary stage productions requiring separate side positions for line-array or PA equipment.
The DragonStage 32x24x18m Large Ringlock Scaffold Roof Truss Structure combines a large modular Ringlock support system with a heavy-duty aluminum pitched-roof truss framework.
Designed for stadium-scale ceremonies, festivals, cultural performances and large outdoor event productions, the system integrates extensive scaffold support zones, heavy aluminum roof trusses, custom roof connectors, tensioning components and a large roof canopy.
The drawing identifies a nominal 32m × 24m × 18m configuration, with the overall height shown at approximately 18.21m.
A complete professional event sound package combining 16 dual-12-inch passive line array speakers, 10 dual-18-inch subwoofers, 6 stage monitors, dedicated Class-D power amplifiers, dual 4-in/8-out DSP processors, power management, wireless microphones, rigging frames, flight cases, amplifier racks and cabling.
This system is designed for concerts, live performances, festivals, touring productions and other professional event sound applications where the customer needs a coordinated PA package rather than individual speakers.
For other professional audio systems, see Stage Sound.
The DragonStage 15×10×8m Aluminum Curved Roof Truss System is a modular concert-stage roofing structure featuring a curved overhead truss framework, four main support towers, and two additional side-wing towers.
The system uses CS389×389mm and CS289×289mm aluminum spigot truss, sleeve block assemblies, BA05 manual hoists, tower bases, outriggers, and a PVC roof canopy. The side wings extend the configuration for additional event-production arrangements, subject to the final equipment layout and verified loading requirements.
Designed for concerts, music festivals, touring productions, and temporary entertainment stages, this system can be supplied with matching modular stage platforms and accessories.
Custom Star Shape Truss Aluminum for Wedding Decoration Art Design
Pentagram，five-pointed star
The DragonStage Custom Five-Point Star Aluminum Truss is a decorative event structure designed for wedding backdrops, stage displays, photo areas, exhibition decoration, and artistic event installations.
Featuring a distinctive pentagram-style star shape, the product is available in 2.5×2.63m, 3×3.15m, and 4×3.8m configurations, with selected 200mm and 300mm truss section options.
The customized star geometry provides an alternative to conventional square, rectangular, or circular event truss structures.
The DragonStage 9x6m Bolt Truss Gantry System is a modular event-support structure featuring two vertical truss towers, a horizontal bolt-connected truss beam, tower-head assemblies, base plates, and diagonal outrigger bracing.
With a nominal horizontal dimension of 9m (29.5ft) and a height of 6m (19.7ft), this open-frame structure is intended for event lighting, stage production, backdrop framing, and temporary gantry applications. Final truss specifications, support arrangements, and equipment loads are confirmed according to the project requirements.
The DragonStage 36x18x12m Large Concert Stage Roof Truss System is a large-format modular event structure featuring a multi-tower truss support system, an elevated overhead truss framework, and a modular stage platform with guardrails and stair access.
With nominal dimensions of 36m wide × 18m deep × 12m high (120ft × 60ft × 40ft), this configuration is intended for large concerts, music festivals, live performances, and temporary entertainment productions requiring an extensive stage area and overhead structural framework.
The DragonStage 6.72x4.89m modular event stage combines a 0.6m-high red stage platform with a 7.7m-wide, 4.4m-high rear box truss gantry. The open-top configuration provides a raised performance area and a separate overhead truss frame for event backdrop and production applications. Suitable for concerts, school performances, ceremonies, and indoor events, with final accessories and rigging requirements confirmed according to the project.
The DragonStage 25x10m Ringlock Grandstand is a large modular spectator-seating system designed for temporary sports events, school competitions, festivals, public performances, and other audience gatherings. Measuring 25m wide × 10m deep, the illustrated configuration features tiered seating, two access aisles, and three-sided guardrails. The specified main height is 2.5m, with an overall height of 3.5m. The modular Ringlock system can be configured according to the required seating layout, access arrangement, and project conditions.
A heavy duty iron adjustable clamp specifically designed for use in clear span marquees using grooved aluminium kader style beams. It has M10, M12 and M14 tapped mounting points.
Our professional Aluminum Alloy Spigot Square Truss is the industry standard for high-performance rigging. Designed with a robust modular system logic, this versatile solution is perfect for concert and event stages. It offers exceptional load-bearing stability and a sleek finish for supporting professional lighting and LED screens.
Section:Square200x200mm inclined tube: 12x2.0mm Main tube: 30x2.0mm Length:0.5/1/2/2.5m Braces: 20x2.0mm
This premium 200x200mm Aluminum Spigot Box Truss offers a compact yet incredibly strong structural solution. Ideal for exhibitions and trade shows, its high-precision conical connection system ensures rapid assembly. It is the perfect professional choice for creating sophisticated lighting truss grids in any concert and event stage environment.
Our 290mm Aluminum Square Spigot Truss with 50x3mm main tubing is a heavy-duty solution for professional rigging. Utilizing a modular system logic, this versatile series is ideal for concert and event stages, offering exceptional load-bearing stability and rapid assembly for any production environment.
The Dragonstage Aluminum Spigot 520x520mm Square Box 6 Ways Corner Truss Cube Connector is a device for constructing large, sturdy structures that are sturdy and lightweight. This device is made of aluminum, which is durable and lightweight. The product has a size of 520x520mm and can be used for building structures in 6 different ways. It also comes with two pieces of aluminum screws for assembling the structure. The device is able to withstand high pressure, so it is perfect for heavy objects.
This box can be used to create a stable structure for your display or party. You can use this box to create a corner truss cube. It can be used for exhibitions, retail, and party displays. The box has a 400x400mm or 389x389mm square opening. The box has six ways to connect.
Dragonstage Aluminum Spigot 300x300mm / 289x289mm Square Box 6 Ways Corner Truss Cube Connector is an aluminum spigot with a 300x300mm square box with 6 ways corner truss cube connector. This aluminum spigot is perfect for hanging lights, air conditioning, and other things. The dimensions of the spigot are 300x300mm square box with 6 ways corner truss cube connector.
Aluminum Spigot Truss Aluminum Base Plate with Handles 300mm 400mm 500mm 600mm 800mm with half conical and pins clips.
The DragonStage Aluminum Spigot Truss Base Plate with Handles is available in five square sizes from 300×300mm to 800×800mm, all using an 8mm-thick aluminum plate. Each configuration can be supplied with compatible half conical connectors, connector pins and R-clips for spigot truss installation. Integrated handles make the plates more practical to carry and position during repeated event setup and teardown.
this is 100x100x3mm base plate for f14 truss mini, with 4 half connectors and pins clips.
The DragonStage F14 Mini Truss Square Base Plate is a compact 100 × 100 × 3mm base plate supplied with 4 half conical connectors, connector pins and R-clips for compatible F14 mini truss systems. It is designed as a small mounting and connection accessory for exhibition, display, DJ, decorative and lightweight mini-truss applications.
Section:Square400x500mm Inclined tube: 25x2.0mm Main tube:50x3.0mm Braces:50x2.0mm Material: Aluminum 6061-T6
Our high-strength 500x400mm lighting truss is engineered from premium aluminum alloy for superior load-bearing performance. Ideal for music and audio setups, this durable screw-connection system ensures stability for professional stage environments. Built to meet rigorous safety standards, it provides a reliable foundation for any event production.
Section:Square500x500mm Inclined tube: 25x2.0mm Main tube:50x3.0mm Braces:50x2.0mm Material: Aluminum 6061-T6 This heavy-duty 500x500mm bolt aluminum square truss is the ultimate foundation for outdoor concert stages and large-scale events. Engineered for maximum structural stability, this aluminum truss system provides the high-load capacity needed to support massive lighting rigs and heavy audio arrays safely in any environment.
Section:Square400x400mm Inclined tube: 25x2.0mm Main tube:50x3.0mm Braces:50x2.0mm Material: Aluminum 6061-T6
This versatile 400x400mm aluminum roof screw lighting truss is the industry standard for medium-to-heavy stage rigging. Engineered for exceptional durability, this high-performance aluminum truss system supports heavy lighting and audio equipment with ease. It is the perfect foundation for building safe, professional modular stage systems for any event.
The DragonStage 4.88x2.44m Adjustable Outdoor Event Stage is a compact 16x8ft temporary platform with two access stairs and an adjustable height of 0.6–1.0m. It is designed for community events, ceremonies, school performances, church activities, DJ shows, presentations, and other temporary indoor or outdoor applications where a medium-size stage with flexible access is required.
Park Aluminum Portable Square Stage 8.54x6.1m 28x20ft Height: 0.8-1m
The DragonStage 8.54x6.1m Aluminum Park & Community Event Stage is a 28x20ft brace-supported modular platform built from 35 standard 4x4ft stage decks. The complete configuration includes 18mm anti-slip plywood decking, adjustable support stands, three-side guardrails, a 4-step stair, and black stage skirting, making it suitable for community concerts, park events, ceremonies, public performances, school activities, and temporary outdoor stages.
The Concert Custom Adjustable Portable Stage is the perfect addition to any concert venue. The Concert Custom Adjustable Cheap Portable Stage is a portable stage that is lightweight and easy to set up. It can be adjusted to the height of the performer and is available in two different colors. The Concert Custom Adjustable Cheap Portable Stage is made of durable, lightweight aluminum that will last for years to come. It has a black aluminum top with four black steel legs. The Concert Custom Adjustable Cheap Portable Stage is very easy to set up and is very stable.
Aluminum Mini Modular Stage Panel Flooring Systems 2.44x2.44m 8x8ft Height 0.6-1m with 1 stair.
The DragonStage 2.44x2.44m Adjustable Aluminum Modular Stage is a compact 8x8ft brace-supported event platform built from two standard 4x8ft / 1.22x2.44m wooden-topped stage panels. With an adjustable finished height of 0.6-1.0m, extendable support stands, stage braces, adjustable bases, and stair access components, it is suitable for small performances, DJ events, ceremonies, church activities, presentations, and temporary event staging.
Assemble Portable Stage Movable Aluminum Stage for Outdoor Concert Event 2.44x1.22m 8x4ft with 1 stair.
The DragonStage 2.44x1.22m Portable Aluminum Stage Kit is a compact 8x4ft temporary event platform supplied with one access stair. Designed for small outdoor concerts, DJ performances, speeches, ceremonies, promotions, and temporary event use, the modular stage can also be combined with additional compatible 4x8ft units when a larger platform is required.
The DragonStage 3.8x3.4m Aluminum Arch Truss Gateway is a compact curved entrance structure built from 290×290mm spigot truss with 300×500mm base plates. With overall external dimensions of approximately 3800mm wide × 3400mm high, it is designed for wedding entrances, exhibition gateways, red-carpet areas, event decoration, photo zones, and other temporary event displays.
Base plate only for the U-Frame 50. LED cans and moving heads can be installed freeriding in the room. In combination with the optional wheels the U-Frame Dolly will be an indispensable element on stages and show acts.
U-frame Truss And Dolly, it is custom U torm trusses (660 × 500 × 50mm) for 4 (4 utorm trusses+ top bar+ dolly) and 5 (4 utorm trusses+ top bar+ dolly) Robots in black color.
the dolly is made of 1.2x0.6m aluminum plate, thickness 8mm and 4 casters.
The DragonStage 5.49x1.22m Straight Aluminum Event Stage Ramp provides a direct access route for wedding stages, corporate events, ceremonies, hotel functions, and other temporary platforms. The ramp measures approximately 18ft long × 4ft wide (5.49 × 1.22m) and uses modular 4 × 4ft / 1.22 × 1.22m deck sections with 1m / 3.28ft high guardrails along both sides.
The DragonStage 3.0x1.22m Compact Aluminum Stage Transition Ramp provides a short, direct access route between ground level and temporary event stages. With an overall length of approximately 3.0m / 9.84ftand a width of approximately 1.22m / 4ft, the ramp uses modular aluminum stage components and includes 1m / 3.28ft high guardrailson both sides.
The DragonStage 7.84x1.23m Narrow Straight Aluminum Stage Access Ramp provides a direct route between ground level and an elevated temporary stage for performers, speakers, technicians, event staff, and production crew. Its slim footprint measures approximately 308⅝ × 48⅜ in (7.84 × 1.23m)and uses modular 4 × 4 ft / 1.22 × 1.22mramp deck sections with 1m / 3.28ft high guardrailsalong both sides.
The DragonStage 10.30x1.63m Straight Aluminum Stage Production Loading Ramp provides a direct access route between ground level and temporary event stages. With an overall external size of approximately 405½ × 64⅛ in (10.30 × 1.63m), the system uses standard 4 × 4 ft / 1.22 × 1.22m modular deck sections and 1m / 3.28ft high guardrails along both sides. It is suitable for road cases, AV equipment, production carts, technicians, and general backstage stage access.
The DragonStage 7.32x3.05m Compact Switchback Aluminum Stage Service Ramp provides a continuous access route for AV carts, production trolleys, touring equipment, technicians, and stage crew. Its compact U-shaped footprint measures approximately 24 × 10 ft (7.32 × 3.05m)and uses standard 4 × 4 ft / 1.22 × 1.22mmodular ramp decks with 1m / 3.28ft high guardrailsalong both sides.
The DragonStage 7.40x8.26m L-Shaped Aluminum Backstage Loading Ramp is designed for moving flight cases, lighting cases, audio equipment carts, cable boxes, production trolleys, and event equipment between ground level and temporary stages. The 90-degree layout has an overall footprint of approximately 291⅜ in × 325¼ in (7.40m × 8.26m) and uses standard 4 × 4 ft / 1.22 × 1.22m modular deck sections with 1m / 3.28ft high guardrails along both sides.
The DragonStage 9.82x3.23m Switchback Modular Aluminum Event Stage Ramp is designed for temporary stages requiring a continuous access route for wheelchairs, performers, event staff, carts, and wheeled concert equipment. The compact U-shaped layout measures approximately 386⅝ in × 127¼ in (9.82m × 3.23m) and uses standard 4 × 4 ft / 1.22 × 1.22m modular ramp deck sections with 1m / 3.28ft high guardrails along both sides.
