Counter Flashings
Description
Counter Flashing is made of 28 or 26 Gauge Steel, Bonderized, Galvanized or Zincalume, 10′ long. Formed metal or elastomeric sheeting secured on or into a wall, curb, pipe, rooftop unit, or other surface to cover and protect the upper edge of a base flashing and its associated fasteners. It is a strip of sheet metal in the form of an inverted “L” built into a vertical wall of masonry and bent down over the flashing to make it watertight. It is usually made of galvanized steel and directs water away from areas on the roof such as the intersection of the roof and walls. Roofers will install flashing around vents, skylights, and chimneys. For architectural, residential, and commercial roofing. ASTM A-653, ASTM A-792
| Variant |
|---|
| Bonderized 3×1/2 |
| Bonderized 4×1/2×1/4 |
| Bonderized 5×1/2 |
| Bonderized 6×1/2×1/4 |
| Bonderized 6×1/2×1/2 |
| Galvanized 3×1/2 |
| Galvanized 4×1/2×1/4 |
| Galvanized 5×1/2 |
| Galvanized 6×1/2×1/4 |
| Galvanized 6×1/2×1/2 |
| Zincalume 3×1/2 |
| Zincalume 4×1/2×1/4 |
| Zincalume 5×1/2 |
| Zincalume 6×1/2×1/4 |
| Zincalume 6×1/2×1/2 |
Product Specifications
Frequently Asked Questions
Is the steel in Counter Flashings to an ASTM standard?
The applicable standards are ASTM A653 for galvanized steel, and ASTM A792 for Zincalume.
Which of the metals offered for Counter Flashings should I choose?
For Counter Flashings, galvanized steel is the general-purpose choice; Zincalume holds up longer where salt air or constant damp is a factor; bonderized steel is supplied to be painted on site.
What covers the top edge of base flashing at a wall or curb?
Counter Flashing is installed on top of the Chimney Flashing to cover the gap between the Chimney Flashing and the chimney wall, protecting it from rain damage.
Which metals do you make Counter Flashings in?
Counter Flashings are made from galvanized steel, Zincalume (Galvalume), or bonderized steel.
How thick is the metal on Counter Flashings?
Counter Flashings are most commonly available in 26-gauge and 28-gauge thicknesses.