Satellite antenna on flat roof - installation and cable laying

Can’t the sealing also be damaged in the long run by the (wind) movement? Otherwise, if the thing is heavy enough, it will hold...

Screwing it to the wall just doesn’t please the lady in the house, as it’s too visible from the terrace. And I don’t want it on the roof because it’s too hard to access there.

I meant not to screw it on the outside of the facade! You have a flat roof, so also a parapet, right? You can screw the dish _inside_ onto the parapet. With a common bracket for the outer facade. The dish is then no longer visible from below, depending on the height of the parapet and angle of view (that would also be my goal, otherwise it looks shabby if you can see from below what’s on the roof) If you generally don’t want it on the roof, and not on the facade either – what’s left then? Putting it on the ground?!

I already meant not to screw them to the outside of the facade! You have a flat roof, therefore also an attic parapet, right? You can screw the dish to the _inside_ of the attic parapet. With a common bracket for the exterior facade. The dish is then not visible from below, depending on the height of the attic parapet and the viewing angle (that would also be my goal, otherwise it looks shabby if you can see from below what is on the roof) If you generally don't want it on the roof, and also not on the facade – what else is left? Put it on the ground?!

A solution on the flat roof is already an option. I didn't understand at first your possibility to screw it to the attic parapet. Since my garage is made of wooden studs, the attic parapet must also be 100% sealed, so that probably won't work either. I would have to clarify that with my carpenter.

Whether such mounts with concrete slabs are any good or not, I cannot say. But somehow I don't have a good feeling about it. Depending on the size of the antenna and thus the wind load, you need a few kilos of concrete slabs so that the antenna does not move and you lose reception. These also have to be transported onto the roof first. Then there is also the question of whether the roof is designed to carry this additional weight.

We had a satellite dish on the flat roof (rental apartment) for years. The landlord provided us with a stand that was weighted down with concrete slabs. With that, we had no reception problems even in heavy wind... although I was initially doubtful.

There are also stands for patio umbrellas. Something like that should work. Either with a granite block attached at the bottom or fillable with sand or water (which might then be too light)... weighting it down with slabs definitely held. A 50x50x5cm slab weighs about 30 kilos... but those don't fit in every stand. Then there are the 40x40x4cm ones... roughly 15 kilos.

Oh yes, they had placed a thin rubber mat under the stand for us. Probably to avoid damaging the roof...

In plant engineering, it is completely common for supports for pipelines and cable trays on flat roofs to be made with concrete slabs. An appropriate protection mat between the slab and the waterproofing membrane is important. Not every mat is suitable for every roof.