# Standing Seam Clips (Fixed and Sliding)

> Standing seam clips are concealed brackets that hold panels down at the seams; fixed clips pin the panel, sliding clips let it move with temperature.

- URL: https://roof.wiki/standing-seam-clips/
- Topic: Roof Components
- Also known as: standing seam clips; expansion clips; floating clips; sliding clips; cleats; standing seam cleats
- Regions: Global
- First published: 2026-11-02 · Last reviewed: 2026-11-02
- Cite as: "Standing Seam Clips (Fixed and Sliding)." roof.wiki. https://roof.wiki/standing-seam-clips/

## Key facts

- **Fixed clip:** Pins panel; one fixed zone per panel
- **Sliding clip:** Usually two-piece; allows lengthwise movement
- **Typical cleat spacing (copper):** About 12 in (300 mm)
- **MCA guide published:** 2018

Clips are the concealed connections between standing seam panels and the deck or purlins below. Each clip is screwed down and has a tab that is captured in the seam of the panel. Clips resist wind uplift and, just as importantly, decide how the panel is allowed to move as it expands and contracts.

## Types

- **Fixed clips**: a single piece that locks the panel in place. Panels may be fixed at one zone only (often near the ridge or mid-slope) so that they move away from that point.
- **Sliding, expansion or floating clips**: usually two-piece, with a base fixed to the structure and a tab that can slide within it, allowing the panel to travel lengthwise. They are particularly important on long panels and on aluminium, which moves the most.
- **Cleats**: in traditional copper, zinc and terne roofing, small strips of the same or compatible metal, often at about 12 in (300 mm) centres, do the job of clips. Specifications call for fixed or expansion cleats designed not to unhook under thermal movement.

## Selection

Clip choice and spacing depend on the specific system and its manufacturer's specifications, the panel profile, the metal, the deck type, local codes and the design wind load. Corner and perimeter zones usually need closer spacing. One federal specification for copper roofing requires multi-piece clips for panels wider than 12 in and stainless steel screws, with nails not permitted for clip fastening. Bearing plates are sometimes used under clips on insulated assemblies.

## Industry guidance

The Metal Construction Association's best practices guide for standing seam roof clips, published in 2018, addresses selecting and using clip connections so that systems accommodate thermal movement and resist attachment fatigue. As the association put it, correct attachment is central to the long-term performance of metal roofs.

## Common mistakes

Using only fixed clips on long panels, mixing clip types from different systems, over-tightening or misaligning clips, and fastening through panels at both ends all restrain movement and can lead to oil canning, clip failure and seam damage.

## Sources

1. MCA publishes best practices guide for standing seam roof clips — Design & Build with Metal. https://designandbuildwithmetal.com/industry-news/2018/05/21/mca-publishes-best-practices-guide-for-standing-seam-roof-clips
2. Section 07 61 16 Sheet Metal Roofing (VA master specification) — Whole Building Design Guide / U.S. Department of Veterans Affairs. https://www.wbdg.org/FFC/VA/VANCAS/VANCA076116.pdf
3. 14.3. Copper Roofing (architectural specifications) — Copper Development Association. https://archive.copper.org/applications/architecture/arch_dhb/specifications/arch_specs/sheet_roofing.php
4. Essential Zinc: Building for the Future — Continuing Education Center (BNP Media) / Umicore Building Products. https://continuingeducation.bnpmedia.com/courses/umicore-building-products-usa-inc/essential-zinc-building-for-the-future/2/
5. How Is a Standing Seam Metal Roof Installed? (Step by Step) — Interlock Roofing. https://www.interlockroofing.com/kb/how-is-a-standing-seam-metal-roof-installed/
6. Cleat: Definition, Uses & Benefits in Roofing Systems — Interlock Roofing. https://www.interlockroofing.com/glossary/cleat/
7. Fasteners: Definition, Types & Benefits for Roofing — Interlock Roofing. https://www.interlockroofing.com/glossary/fasteners/
8. NZ Metal Roof and Wall Cladding Code of Practice: Thermal Expansion and Contraction — NZ Metal Roofing Manufacturers Inc.. https://www.metalroofing.org.nz/cop/roofing/thermal-expansion-and-contraction
9. Standing seam metal roof — Wikipedia. https://en.wikipedia.org/wiki/Standing_seam_metal_roof
10. Canadian Roofing Reference Manual: 10.8 Metal Roofing Application — Canadian Roofing Contractors Association. https://roofingcanada.com/docs/canadian-roofing-reference-manual/chapter-10-metal-roofing/10-8-application/