I watched a Sky installation guy fit a dish to the outside of a neighbour's house. The first thing he did was to drill holes in the exterior wall, fit anchor bolts, then fix two steel wire cables with carabiners to the wall and the foot of the ladder. I'm not sure I would want that done to my house.
The European Social Fund paid for me to the “How not to fall off a ladder course” like the Sky TV guys we should be fixing a anchor into the brickwork or fabric of a house to secure a ladder when working at height, if the customer doesn’t like it then we should tell them we won’t do the work unless they pay for scaffolding.
The last time I hired a tower scaffold it cost sixty quid including delivery and collection, so not that expensive but then it needs erecting and dropping, so it’s going to be at least a hundred quid. That’s assuming you can get in with a tower.
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