How to measure a flashing
Five minutes with a tape measure. Or skip it — send us a photo of the old flashing and we'll work it out.
An example: barge capping
Every flashing is just flat legs joined by bends. Measure each leg, and add them up to get the girth — the width of flat steel it's folded from.
| Leg | Measurement |
|---|---|
| A Top cover | 120 mm |
| B Face | 50 mm |
| C Base | 10 mm |
| D Return | 10 mm |
| E Drip kick | 10 mm |
| Girth (add them up) | 200 mm |
Measure yours in five steps
Measure each leg
Tape from edge to bend, and bend to bend, in millimetres. Give each leg a letter on your sketch. If you have the old flashing, measure that.
Note the angles
Most bends are 90°. Where a flashing sits on the roof — ridge, apron, barge cover — tell us the roof pitch, or measure the angle with a phone level app.
Mark the coloured side
Draw a line on the side that faces out once it's installed. That's the side we put the colour on.
Count your lengths
Measure the run and tell us how many pieces at what length. We fold single pieces up to 8 m long.
Choose a colour
Pick from the Colorbond® range, or plain Zincalume®. Not sure? Bring in an offcut or send a photo and we'll match it.
Done? Send it through.
Take a photo of your sketch and attach it to a quote request.
Tips
- Easiest of all: bring the old flashing into the shop at 110–114 Almond Ave, or photograph it with a tape measure next to it.
- Round to the nearest 5 mm — that's plenty accurate for most flashings.
- Tapered? If a leg is wider at one end, measure both ends and tell us.
- Not sure what it's called? It doesn't matter. A photo and rough sizes are enough for us to work it out.