Standing Seam vs Traditional Metal Roofing: What Makes It Different?
Metal roofing has long been used across Australia because of its durability, versatility and suitability for different architectural styles. However, not every metal roofing system is designed in the same way.
Standing seam metal roofing takes a different approach to panel connection and fixing. Instead of relying on exposed fasteners across the roof surface, standing seam uses concealed clips and raised seams to create a clean architectural finish.
For architects, builders and property owners considering a premium metal roofing solution, understanding these differences can help when selecting the right system.
What Makes Standing Seam Different?
The most noticeable difference is the fixing method.
A conventional metal roof may have visible fasteners through the roofing panels. Standing seam panels are secured using concealed stainless-steel clips positioned beneath the panels. These clips also allow the panels to accommodate expansion and contraction.
The result is a roof surface with strong linear definition but without rows of visible screws.
Roofing Group’s standing seam system incorporates a raised 25mm seam, creating the distinctive profile associated with this type of architectural roofing.
A Cleaner Architectural Appearance
One of the biggest reasons designers choose standing seam is its appearance.
The raised seams create regular vertical or horizontal lines depending on the application. These lines can emphasise the geometry of a building and create subtle shadow effects.
For contemporary homes, commercial buildings and architectural projects, this can provide a much more refined appearance than conventional exposed-fixing roofing.
Standing seam can also be used as wall cladding, allowing the same material language to continue from the roof onto the façade.
Double-Lock and Single-Lock Systems
Standing seam is available in different configurations depending on the application.
Double-Lock Standing Seam
Double-lock standing seam is designed primarily for roofing applications. The panels are mechanically locked together to create a secure seam.
Roofing Group specifies a minimum 3-degree pitch for its double-lock standing seam roofing system.
This system is particularly suitable for architectural roofs where clean lines and concealed fixings are important.
Single-Lock Standing Seam
Single-lock standing seam is commonly used for wall cladding.
One of its major design advantages is installation flexibility. Panels can be installed vertically, horizontally or diagonally, while panels can also be curved horizontally or vertically for more complex architectural designs.
This gives architects considerable freedom when designing façades.
More Design Flexibility
Traditional roofing products generally have predetermined profiles and dimensions. Standing seam offers considerably more flexibility.
According to Roofing Group, panel widths can be customised to the millimetre. The system can also accommodate tapered, curved, convex and concave forms, as well as specific joint arrangements around windows and skylights.
This makes standing seam particularly useful for custom architectural projects.
Instead of designing the building around a standard roofing profile, designers can have greater control over how the roofing and cladding interact with the building’s geometry.
Material Choices
Standing seam is also available in several different metal options.
Roofing Group lists:
- Zinc
- Copper
- Aluminium
- COLORBOND®
- Corten
- Stainless steel
These materials provide different colours, textures, ageing characteristics and performance considerations.
Zinc
Zinc develops a natural protective patina as it ages and can provide a distinctive architectural appearance.
Copper
Copper naturally changes colour as it weathers, developing a patina that can become part of the building’s visual character.
Aluminium
Aluminium offers a lightweight metal option and can be supplied with a pre-painted finish.
COLORBOND®
COLORBOND® steel provides a wide range of design possibilities and is manufactured in Australia to relevant Australian standards, according to Roofing Group’s product information.
Corten and Stainless Steel
Corten can provide a weathered architectural appearance, while stainless steel can be considered where its particular appearance and material characteristics suit the project.
Thermal Movement Matters
Metal naturally expands and contracts as temperatures change. Long roofing panels therefore need a fixing system capable of accommodating movement.
Standing seam uses fixed and sliding clips to allow the panels to expand and contract. Roofing Group’s technical information specifies stainless-steel clips and installation spacing for its system.
This is one reason correct installation is so important.
A high-quality metal roof is not simply about selecting the right sheet. The substrate, clips, membrane, ventilation, seams, penetrations and detailing all contribute to the performance of the finished system.
Standing Seam for Roof and Façade Design
Perhaps one of the strongest advantages of standing seam is that it can be used across multiple parts of a building.
A project can incorporate double-lock standing seam roofing and single-lock wall cladding, creating a visually connected exterior.
This approach can work particularly well for modern homes, commercial buildings and architecturally distinctive projects where the roof and façade are intended to appear as one continuous design element.
Is Standing Seam Worth Considering?
Standing seam can be an excellent option when design flexibility, concealed fixings and architectural appearance are priorities.
It may not be the simplest choice for every roofing project, particularly where a basic roofing solution is all that is required. However, for projects requiring custom dimensions, complex forms, concealed fixing and a premium architectural finish, it offers significant advantages.
Final Thoughts
The difference between standing seam and conventional metal roofing goes beyond appearance.
Standing seam combines concealed fixing, raised seams, flexible panel dimensions and multiple material options. Its ability to work across roofing and wall cladding also gives architects more freedom when developing a complete building envelope.
For Australian residential and commercial architecture, standing seam is worth considering when the project calls for a durable, refined and highly customisable metal roofing and cladding system.