Approximately 15ft x 10ft of roof made of aluminum.
Using metal roof for ground plane.
It works just as well as the other.
The roof slopes slightly down towards ground to flow water and snow off.
3 wide rib panel.
You will most likely have to order the roofing metal in the amount and color specific to your house.
Metal conducts electricity but when you are dealing with a full roof a lightning strike would ground out through the rest of the structure without causing damage or harm to the interior.
Preferably near the center of the largest masses of metal.
It would likely make a lousy antenna.
And for hf verticals.
This is possible with a metal roof on a home barn garage carport rv porch and metal sheds or awnings and even on commercial buildings.
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I was worried about lightning so i decided to try a different design.
The short answer is no you don t have to ground a metal roof and you will incur no additional risk if you don t ground it in most circumstances.
Over the years many amateur radio operators have successfully used a metal roof as the ground plane or radial system for their hf vertical antenna.
You ll be in good shape.
Here s some potential materials you can easily use as a ground plane.
The actual height of the metal roof above ground is not especially important for an hf quarter wave vertical antenna.
Metal roofs make great ground planes for vhf uhf antennas.
So if you are planning on mounting all your antennas on the roof.
Indoor antennas you say.
This roof is approximately 20ft above grade and about 5 8ft below height of spot where antenna will go.
This is a new antenna much different than my other metal roof ground plane antenna.