A sentence about reaching the roof by means of a ladder

[JACEK1]

Hello.

He climbed up the ladder on to the roof.

or

He climbed onto the roof by means of a ladder/by ladder.

To my thinking, the sentences mean the same. All I want to know is whether or not they are acceptable to you.

Thank you.

[Skrej]

It should be 'onto' as a single word in the first example, as you did in the second.

They're both okay, (with the spelling correction), although the latter seems a bit wordy. I prefer the first.

You could also say "He climbed onto the roof with a ladder."