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Penetration Flashings Reference

Penetration Flashings Quick Reference

 Proximity to the apex determines back flashing design
 

Close to apex
Over-Flashing

  • Aka Dry pan or Watershed
  • Suitable for retrofitting

Distant from the ridge
Under-Soaker

  • AKA Tray
  • Best solution for mid-roof penetrations

Adjacent to the Eave
Hidden Gutter


Only practical for penetrations located neat the eaves
Penetration width and debris determine curb design   

Narrow/Little Debris
Level

  • Only suitable for small catchments not prone to leaf debris.
  • Relatively easy to manufacture on site

Level Over Flashing on Corrugated Profile

Level Over Flashing on Trapezoidal Profile

Level Soaker Flashing on Corrugated Profile

Level Soaker Flashing on Trapezoidal Profile

Level Hidden Gutter on Corrugated Profile

Medium/Moderate Debris
Arrowhead

  • A diverter is formed by joining two trays into the shape of an arrowhead on site.
  • Suitable only for small catchments not prone to leaf debris.
  • Parts can be pre-ordered and final fitting done on site

Arrowhead Over Flashing on Corrugated Profile

Arrowhead Over Flashing on Trapezoidal Profile

Arrow Head Soaker Flashing on Corrugate Profile

Arrowhead Under-Soaker on Trapezoidal Profile

 

Wide/Much Debris
Cricket

  • Most suitable for larger catchment areas.
  • Requires careful calculation and off-site fabrication.

Cricket Over Flashing on Corrugated Profile

Cricket Over Flashing on Trapezoidal

Cricket Soaker Flashing on Corrugate

Cricket Soaker on Trapezoidal

 
 
Clause: 
009_004_002_004_000_000_000_000_000
Clause Number: 
9.4.2.4
/cop/penetrations/penetration-design#penetration-flashings-reference
Revision Category: 
2 - Editing and rearrangement
Revision Detail: 

Edited clause name and Sheetmetal Penetration-Flashings Quick Reference.