Universal Metal Roof Mounting Solutions — Clamp-On or Screw-Down

RCT & MRM Metal Roof Mounts — Engineered to Mount Anything on Metal Roofs

The RCT and MRM are purpose-built metal roof mounting systems designed to securely attach any rooftop accessory—from snow guards and rail systems to solar racking, signage, conduit, HVAC supports, cable trays, antennas, and custom assemblies. Together, they provide the correct mounting solution for both standing seam and through-fastened metal roof panels.

RCT — Non-Penetrating Standing Seam Clamp: Engineered to clamp directly onto standing seam ribs without drilling or piercing the panel. The RCT preserves roof watertight integrity and manufacturer warranties while delivering a high-strength attachment point for permanent or temporary rooftop installations on snap-lock, mechanical seam, T-seam, and most proprietary standing seam profiles.

MRM — Screw-Down Metal Roof Mount: Designed for exposed-fastener and corrugated metal roofs, the MRM is mechanically fastened directly to the roof structure. Its gasketed, sealed attachment provides a durable mounting base for high-load and high-vibration applications where through-fastening is required. Ideal for rib-mounted or flat-mounted installations on agricultural, commercial, and industrial metal panels.

Mount Anything
Snow Guards, Solar, HVAC, Signage, Conduit & Custom Loads
Roof Type Coverage
Standing Seam (RCT) & Through-Fastened Panels (MRM)
Installation Method
Clamp-On (No Penetration) or Screw-Down (Sealed Fasteners)
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RCT Standing Seam Clamp & MRM Screw-Down Metal Roof Mount | Universal Rooftop Mounting

Universal Rooftop Mounting · Metal Roofs

RCT Clamp + MRM Mount
For Metal Roofs

Two purpose-built solutions to mount anything on metal roofs: RCT is a non-penetrating standing seam clamp, while MRM is a sealed screw-down metal roof mount for through-fastened panels.

  • RCT: Non-Penetrating Standing Seam
  • MRM: Screw-Down · Sealed Fasteners
  • Solar · Snow · Signage · Rooftop Infrastructure
  • Free Layout + Quote
Request a Free Layout & Quote Call (437)-475-2066

Pick the right mount for the roof type: clamp-on for standing seam, screw-down for exposed-fastener panels.

Mount Anything.
Choose the Right Attachment.

RCT clamps to standing seams with zero penetrations. MRM fastens to through-fastened panels with sealed screws for a durable mounting base. Both are built for solar racking, snow systems, signage, conduit, cable tray, antennas, and custom rooftop assemblies.

RCT
No holes • Seam clamp
MRM
Screw-down • Sealed
Universal
Mount accessories & loads
Get a Free Layout

Choose the Correct Mount in 10 Seconds

The fastest way to avoid misfits: match the mount to your roof panel type. If you’re unsure, send a photo and we’ll confirm.

STANDING SEAM

Use RCT (Non-Penetrating Clamp)

Clamp-on attachment to the seam rib. No drilling through the panel.

  • Best for: snap-lock, mechanical seam, T-seam & many proprietary seams
  • Ideal when: penetrations are prohibited or warranty-sensitive
  • Common installs: solar rails, snow retention, signage, conduit
THROUGH-FASTENED PANELS

Use MRM (Screw-Down Roof Mount)

Mechanically fastened and sealed to the roof structure for a durable base.

  • Best for: corrugated, ribbed, exposed-fastener metal roofing
  • Ideal when: you need a fixed, sealed, high-stability mounting point
  • Common installs: equipment supports, signage, cable trays, custom assemblies

🧩 Universal Applications

Designed for snow retention, solar racking, signage, conduit, cable trays, antennas, and custom rooftop loads.

🛠️ Roof-Type Correct

RCT clamps to seams (no penetration). MRM screw-downs to through-fastened panels (sealed attachment).

🔒 Keep Roofs Watertight

Choose the attachment method that matches the roof system to maintain long-term performance.

📐 Layout Help

Send a roof photo + your application. We’ll spec the right mount, quantity, and spacing.

What These Mounts Support

Same goal — mount securely on metal roofs. Different attachment methods — choose RCT (standing seam) or MRM (through-fastened panels).

COMMON APPLICATION

Solar Racking & PV Arrays

Use RCT on standing seam roofs for clamp-on rail attachment. Use MRM on exposed-fastener panels where screw-down mounting is required.

  • RCT: clamp-on to seam ribs (no panel penetrations)
  • MRM: sealed mechanical fastening to panel/structure (through-fastened roofs)
  • Best for: residential & commercial metal roof solar layouts

Snow Retention & Snow Rails

Mount snow guards, bars, and rail systems to metal roofs using the roof-appropriate attachment method.

  • Standing seam roofs: use RCT for non-penetrating clamp-on attachment
  • Through-fastened roofs: use MRM for screw-down, sealed mounting points
  • Ideal for: steep slopes, high-snow regions, commercial & residential installs

Signage, Conduit, Cable Tray & Rooftop Infrastructure

Create a secure base for rooftop attachments without improvising or mismatching hardware.

  • RCT: best when penetrations are not allowed on standing seam systems
  • MRM: best for rigid, screw-down mounting on corrugated/ribbed exposed-fastener panels
  • Use cases: signage brackets, pipe supports, cable routing, antennas, custom fabrications

RCT Seam Profile Compatibility

RCT is for standing seam roofs. It is designed to clamp onto the seam rib. Not sure if your seam qualifies? Send a photo — we’ll confirm.

  • Works with: snap-lock, mechanical seam, T-seam, and many proprietary standing seam profiles
  • Not for: exposed-fastener/corrugated panels (use MRM screw-down mount instead)

RCT & MRM FAQ

What’s the difference between RCT and MRM?

RCT is a non-penetrating clamp for standing seam roofs. MRM is a screw-down, sealed roof mount for through-fastened / exposed-fastener metal panels.

Is the RCT truly non-penetrating?

Yes. The RCT clamps onto the seam rib without drilling through the panel, helping preserve watertight integrity on standing seam systems.

When should I use the MRM screw-down mount?

Use MRM on corrugated/ribbed exposed-fastener metal roofs where a mechanically fastened, sealed mounting point is required for your accessory or load.

Can these mounts be used for more than snow guards or solar?

Yes. Both are general-purpose rooftop attachment solutions used for snow retention, solar racking, signage, conduit, cable tray, antennas, and custom rooftop assemblies.

How many mounts do I need?

Quantity and spacing depend on roof type, slope, layout, and the accessory/load. Request a free layout and we’ll spec the right mount, count, and placement.

Mount Anything on Metal Roofs — The Right Way

Send a roof photo + your application. We’ll confirm whether you need RCT (standing seam) or MRM (screw-down) and provide a layout + quote.

Request a Free Layout & Quote Call (437)-475-2066