TinnerFlow
Traditional Hangers & Supports ยท Supports & Hangers

Roof curb/stand support

Rooftop run

ConnectionSupport method only
SupportRooftop stands/frames

Before you start

  • Confirm the approved support detail, actual duct weight, support spacing, attachment substrate, hardware size, corrosion protection, and any insulation, seismic, vibration, or rooftop requirements before installation.
  • Confirm rooftop support type, roof membrane detail, sleeper or curb design, drainage, wind and seismic restraint, corrosion protection, thermal movement, and roofing coordination.
  • Verify no roof penetration will be made without the approved waterproofing detail.
  • Inspect support pads, stands, frames, coatings, and hold-down hardware.

Tools and materials

Approved rooftop stands, sleepers, curbs or frames, roof-protection pads, hold-downs, wind or seismic restraints, isolation components, level, laser, lift, fall protection, and roofing-approved seal materials.

Lay it out

  1. Lay out support locations to maintain roof drainage and service access.
  2. Coordinate with roof seams, drains, curbs, walk pads, and equipment.
  3. Plan movement and restraint points for long exterior runs.

Set and support it

  1. Install stands or sleepers on approved pads or curbs.
  2. Level supports without creating water pockets.
  3. Protect the roof membrane during all work.

Make the connection

  1. 1

    Verify roofing approval and support locations.

  2. 2

    Set the rooftop supports to the required elevation.

  3. 3

    Place the duct on the support surface.

  4. 4

    Install hold-downs and wind or seismic restraints.

  5. 5

    Add isolation or expansion components where shown.

  6. 6

    Check drainage around every support.

  7. 7

    Inspect coatings and repair approved minor damage.

Check the install

  • The roof membrane remains protected and weather-tight.
  • Drainage paths stay open.
  • Supports are stable and corrosion protection is intact.
  • Wind and seismic restraints match the approved detail.
  • The duct can move thermally where required.

Common mistakes

  • Penetrating the roof without an approved detail.
  • Blocking a drainage path with a sleeper.
  • Using indoor support hardware outside.
  • Clamping a long run so tightly that it cannot move.

Stop and ask

Stop if the support penetrates the roof without an approved detail, or if drainage, wind, seismic, corrosion, or movement requirements are unresolved.