Ground to roof apex length (typically)

Hi

Does anyone know what length of pole would be needed for a 'typical' UK two-story semi from the ground please?

I want to be able to spray softwash, biocide etc up to the ridge from the ground but wanted to make sure I know the best length for most houses?

Thanks

Ron

35 foot will do most but a longer pole is better as you leave the top section closed to make it stiffer so it doesn’t hit the roof or gutters 

Thank you sir!

If you're referring to a ridge on a flat face I was cleaning up to the ridge using my 22ft the other day I'm 6ft4 though but 25ft would do. If your'e talking about reaching the ridge over a pitched roof you'd need longer for sure.

This very much depends of the age of the house, the modern ones can be reached easily by a 27' pole. Victorian ones are a lot higher and you would need at least a 35' We cleared the gutters of a Victorian terrace where the ground floor ceiling was waste high and needed 35' of poles to do them.