Design & Specification
Design & Specification Guides
Technical guidance for specifying metal wall panels: cost factors, installation, finishes, corrosion, oil canning and fire performance considerations.

Direct answer
Design and specification guides turn a metal preference into a buildable note. They cover cost factors, installation, finishes, corrosion, oil canning and fire as an assembly. General material behaviour, product data and engineer- or code-confirmed items are kept apart on purpose.
Key takeaways
- Write the assembly, not only the visible metal.
- Cost is labour, access and custom work as much as coil price.
- Oil canning is a design risk on flat glossy fields, not a defect slogan.
- Never specify that metal panels are fireproof.
These guides turn a material preference into a buildable specification: how a panel is priced, installed, and expected to perform, not only how it looks. The parent map is the metal wall coverings guide. The readers are architects, specifiers, and contractors.
These pages distinguish three layers on purpose: general material behaviour, product-specific properties, and matters that require an engineer or local code review. The Whole Building Design Guide metal panel wall systems article is useful because it keeps the wall in that larger unit.
The six guides
Metal cladding cost: why the installed number moves with gauge, finish, system type, access equipment and labour. It will not issue a quote and it will not publish city price lists.
Metal wall panel installation: substrates, clips, flashings and sequence. A correct metal on the wrong substrate is still a failed wall.
Metal panel finishes: PVDF, powder coating, anodizing and living patinas. Finish class belongs in the specification. A sample chip is not a coating system.
Metal cladding corrosion: galvanic couples, coastal salt, cut edges and wet cavities. Isolation and drainage are design items.
Oil canning: the visible waviness of flat metal. Width, stiffening, gloss and expectation management reduce it. It is usually a visual issue, not a structural one.
Metal wall panel fire performance: the page that exists so no other page has to overclaim. Skin, core, insulation, cavity and attachments are listed separately. Metal panels are not fireproof.
How these pages should be used with materials and systems
Read materials for the metal and systems for the format, then use this hub to write the limits that those pages cannot honestly quantify.
A Metal Composite Material fire note belongs here and on the system page, not as a one-line claim on a colour sheet. An insulated-panel thermal value belongs to that sandwich, not to a single-skin cassette. A zinc ventilation note belongs on the zinc page and in the installation package.
What belongs in the written specification
At minimum, a metal wall note should name the metal, the panel format, the drainage strategy, the coating or patina class, compatible fixings, movement joints, and the listed assembly for fire and wind where the occupancy requires it. If those lines are missing, the drawing is still a rendering.
Applications tell you whether that note is for a weather wall, an interior liner, a commercial elevation or a house. Do not enlarge a residential accent note into a civic envelope.
How to use this hub
- Keep the four-question order from the metal wall coverings guide.
- Open the one technical guide that matches the argument in the meeting.
- Bring the manufacturer listing and the authority having jurisdiction into the items this site marks as assembly-specific.
- Use the comparisons hub only after the specification limits are named.
| Guide | Use it when | It will not do |
|---|---|---|
| Cost | The bid argument is panel price only | Issue a quote |
| Installation | Joints and sequence are vague | Replace shop drawings |
| Finishes | Colour is the whole spec | Guarantee a 20-year film |
| Corrosion | Metals and salt meet | Pick an alloy from a photo |
| Oil canning | The elevation is flat and dark | Promise a mirror-flat wall |
| Fire | Someone called the metal safe | Call panels fireproof |
In this cluster
Guides

Design & Specification
Metal Cladding Corrosion: Causes and Prevention
How galvanic couples, coastal salt, cut edges and wet cavities cause metal cladding corrosion, and which details belong in the specification.

Design & Specification
Metal Cladding Cost Factors
What actually drives metal cladding cost: metal, gauge, finish, system type, access and labour, not only the panel price on a quote.

Design & Specification
Metal Panel Finishes: PVDF, Anodizing and More
How PVDF, powder coating, anodizing and living patinas differ on metal wall panels, and which finish class belongs on exteriors versus interiors.

Design & Specification
Metal Wall Panel Fire Performance
Why metal wall panel fire performance is an assembly claim, and how skins, cores, insulation and cavities must be specified without calling panels fireproof.

Design & Specification
Metal Wall Panel Installation
How metal wall panel installation sequencing, substrates, clips and flashings decide whether a specified system actually weathers and stays flat.

Design & Specification
Oil Canning in Metal Panels
What oil canning is on metal wall panels, why it is usually a visual issue, and which design choices reduce waviness on flat glossy elevations.
Frequently asked questions
Who confirms fire and structural numbers?
The manufacturer’s listed assembly and the authority having jurisdiction, often with an engineer. These guides explain what to ask for. They are not a substitute for that confirmation.
Why separate general behaviour from product data?
Because a metal can be generally corrosion-tolerant while a specific coating, core or fastener package is not. Mixing those layers is how brochure language enters a specification.
Are these pages installation manuals?
No. They name the decisions that belong in the specification. Field sequence still follows the approved shop drawings and the system instructions.
Sources
- Metal Panel Wall Systems — Whole Building Design Guide Accessed August 20, 2026.
- Metal Composite Material — Metal Construction Association Accessed August 20, 2026.