Satellite dish antennae are a common sight these days on many homes. As a Connecticut home inspector I have developed a un-appreciation for the installers of these roof sails.
I find more often than not poorly installed dishes and wiring. The installation method that drives me absolutely bonkers is the chimney install. This when some installation guru in is infinite wisdom sees the brick and mortar of the chimney as a good anchor point for his television roof top lollipop.
But I'm not here to talk about that particular install method. Instead I want to discuss the more common screwed into the roof method. Take a look at this sat dish mounting base. Looks pretty impressive, right? Two mounting points, one above, one below, six screws, should hold that dish in place in the strongest wind. Well I imagine it would if those screws were mounted into something more substantial than plywood and asphalt shingles.
There is no way this bolting pattern is going to hit more than two screws into a rafter. I can not tell you how many times I have seen seriously long mounting screws sticking through the roof into the attic. Two inches or six, it doesn't matter, the screws aren't going to hold if they are only in a 5/8 inch thick piece of wood. Of course if the installers were to put a 2 x 6 between two rafters under the mounting point and attached that board to those two rafters, then you would have a good solid mount.
That isn't going to happen, but I thought I'd throw it out there any how.
The last picture shows the mounting screws in the attic from the bracket in the picture above. The installer just missed catching the rafter with the center two screws as shown.
This dish will probably end up like so many I see, blown over, ripping the roof apart as it falls.
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