Using strong suction cup to mount something on outside of T@B

jimcenname

I’d like to mount my Starlink using a 5 inch diameter suction cup on the Azdel siding. I’m wondering if it’s safe for the siding. Have you used strong suction cups on the outside of yourT@B?

The attached photo shows the cup mounted on the tub but I'd like to moved it to the side above the entry door. 

SLJ

I wouldn't. You risk causing delamination.