With us average electric price of 0 13 kwh you will be spending 7 25 per day if your system is running full 24 hours.
Roof length from edge.
Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.
That equals to 2 3kwh per hour or almost 56kwh per day of continuous operation.
You ll need a level and a tape measure or ruler.
With a decent 3 4 or 1 wide 30 ft.
Use one of these three methods below to calculate your roof s pitch.
Run the distance from the outside edge of a perimeter stud wall to the center of the house.
If you have safe access to the roof surface you can quickly make the needed area measurements.
Three easy ways to measure your roof s pitch.
This profile of drip edge is shaped like a t with a lower flange at the bottom.
Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof.
Tape measure you can extend the tape out to catch the roof eaves without having to walk dangerously close to the roof edge.
The length of the overhang itself commonly ranges from 2 to 5 inches.
Just measure from the ridge to the lower edge or eaves keeping your tape straight.
A typical 120 foot long roof edge with 6 12 overhangs and no gutters deicing will need about 291 feet of cable.