I'm embarking on fitting a "pulleymaid" type clothes dryer in my flat. How do I reliably find joists. I have tinkered with joist finders in the past but in general I think they are pretty useless for the money.
My approach was the delicately poke through the plasterboard and hope to find one then measure of that to find the others.
I'm also slightly concerned about the weight of the thing and whether I'll end up ripping the ceiling down if I don't do it properly/find joists. Any advice?