- Firrings strips are used on flat roofs to create a slope for the rain to fall off.
- This is for one single length of firring strip.
- Length of 4.8m x 44mm wide.
- 91mm to 2mm is the fall.
- These can easily be cut down to your desired length, below is a quick chart to let you know the height at the various lengths.
Sizes are approximate as we haven't actually cut them. The sizes below are if you cut from the thicker end.
Length cut from thick end | Length Cut from thin end | |
| 3m 57mm to 2mm | 3m 91mm to 34mm | |
| 3.3m 63mm to 2mm | 3.3m 91mm to 29mm | |
| 3.6m 67mm to 2mm | 3.6m 91mm to 24mm | |
| 3.9m 72mm to 2mm | 3.9m 91mm to 19mm | |
| 4.2m 78mm to 2mm | 4.2m 91mm to 14mm | |
| 4.5m 84mm to 2mm | 4.5m 91mm to 9mm |
Please note the sizes in the table are approximate and are for guidance only.
Made to measure firring calculator
If you need a firrings machined to a specific size please use our firring calculator by clicking here.