ᐅ Satellite Dish on Flat Roof – Installation and Cable Routing

Can the sealing not be damaged over time by (wind) movement? Otherwise, if the thing is heavy enough, it will hold...

World-e schrieb:
The lady in the house simply doesn’t like it being screwed to the wall since it is too visible from the terrace. And I don’t want it on the roof because it’s too hard to access up there.

I meant not to screw it to the exterior facade! You have a flat roof, so you also have a parapet, right? You can screw the dish on the inside of the parapet using a common mount for exterior walls. Depending on the height of the parapet and the viewing angle, the dish won’t be visible from below anymore (which would also be my goal, since it looks untidy if you can see what’s up on the roof from underneath).
If you generally don’t want it on the roof or on the facade, then what’s left? Placing it on the ground?!

Alex85 schrieb:
I meant not to screw it onto the exterior facade! You have a flat roof, so there’s a parapet, right? You can attach the dish _inside_ the parapet using a standard bracket for exterior facades. Depending on the height of the parapet and the viewing angle, the dish won’t be visible from below anymore (that would also be my goal, since it looks untidy when you can see what’s on the roof from underneath).
If you don’t want it on the roof at all, and not on the facade either — what else is left? Putting it on the ground?!

There is already a solution for the flat roof. At first, I didn’t understand your suggestion to screw it onto the parapet. Since my garage is made of timber frame construction, the parapet must remain completely watertight, so that probably won’t work. I’ll have to discuss it with my carpenter.

I can’t say whether such mounts with concrete slabs are effective or not. But somehow, I don’t have a good feeling about them. Depending on the size of the antenna and thus the wind load, you need quite a few kilograms of concrete slabs to prevent the antenna from moving, which would cause you to lose reception. These slabs also have to be transported onto the roof first. Then there’s the question of whether the roof is designed to support this additional weight.

We had a satellite dish on the flat roof of our rental apartment for many years. The landlord provided us with a stand that was weighted down with concrete slabs. Even in strong winds, we didn’t have any reception issues, although I was initially doubtful.

There are also bases designed for patio umbrellas that could work for this purpose. Either ones with granite blocks fixed at the bottom or those that can be filled with sand or water (which might be too light). The method of weighting down with slabs definitely held up. A 50x50x5cm (20x20x2 inch) slab weighs about 30 kilograms (66 pounds), but these don’t fit in every stand. There are also 40x40x4cm (16x16x1.5 inch) slabs weighing around 15 kilograms (33 pounds).

Oh, and under the stand, they had placed a thin rubber mat. Probably to protect the roof from damage.

In building services engineering, it is common practice to use stands made of concrete slabs for pipes and cable trays on flat roofs. It is important to place a suitable protective mat between the slab and the waterproof membrane. Not every mat is suitable for every roof.