[G Griffin]

 I`ve worked at over 80ft. Harris pole and hired Peter Crouch for the day  .

[Dave Turley]

Crikey! Jeff, did you have mega neck ache and eye strain doing that job?

[trevor perry]

here is one i did not as high as jeffs but still plenty to go at,its highest point was 72 ft  it wasnt that difficult but it was a very calm day i wouldnt of liked to do it if there had been any wind at all.

[sparklebright]

I do some flats on the coast at 60ft.
Used to use my 45ft tucker, but replace the top three sections, with 12ft sections
making 57 foot. Very very heavy, and you need a still day, there aren't many completely still days on the coast. 
Now I use my fishing poles, mix the sections between the two types and I reach 60ft easy, much lighter too.
Tucker used to sell an 80foot pole, but supply a lanyard (rope) otherwise it would be quite hard to use and so you can have a guy on the roof to hold onto to it in case it starts to fall over!
I looked into it when I did a very tall building, but in the end said I can reach that floor but it will cost ya!