David wrote:

Speculating as usual.

I have ladders but cleaning a semi-circular bay window is a bit precarious
and involves a lot of moving of ladder.

I also have a caravan which would benefit from a roof clean every 6 months
or so.

I had similar needs a few years ago, and after looking at lots of
data, I eventually chose the Zarges Skymaster Trade Ladder 3-Part
3 x 7 Rungs:

https://www.amazon.co.uk/Zarges-Skymaster-Ladder-3-Part-ZAR41097/dp/B002SHDBTU

Together with their safety legs:

https://www.amazon.co.uk/Zarges-ZAR100040-Stabiliser-Adjustable-Safety/dp/B00QJL5PFE/ref=sr_1_8?dchild=1&qid=1621153382&sr=8-8&srs=1803511031

At the time I managed a good deal from Toolstation.

It seems to be very sturdy, and (importantly for one who doesn't
really relish heights) feels remarkably stable. It is small
enough to fit in the garage, and potentially be used on indoor
jobs, yet should reach anything outdoors that I ought to be
tackling. It is a bit heavy.

The stabilisers confused me initially (you need to drill and
attach them yourself), because they can be used on both extension
ladders or stepladders, but not both configurations on
convertible ladders.

Chris
--
Chris J Dixon Nottingham UK
@ChrisJDixon1

Plant amazing Acers.