valley replacement question

[kreyszig]

inspired by the recent slate removal question, and a ££ quote to replace a long lead valley..assuming I can remove the slates either side of the valley by walking up it, removing slates as I go, how would I go about putting the slates back on the new lead?

I would obviously start at the bottom, so should I just make the gap wide enough that I can walk up the valley (it is currently only wide enough for one and a bit of my shoe-clad feet), or am I missing a trick?

Roof ladders hanging off (one, or both of) the ridges will not be running parallel to the valley, so I'm a bit stumped how to do it any other way. I asked a pro and he had a ladder based scaffold system, which I do not.

 

[MatthewC]

I presume the rest of the roof is in good condition and so you don't want to remove lots of slates (which is what you'd have if it's a long valley).

Would it be possible to make the valley a bit more accessible by using a wider lead sheet and trimmed edge slates? Do you know how wide the sarking is under the lead? It is possible that even the same width lead will still allow you to take a vital inch or two off the slates and increase the gap for your feet.

 

[kreyszig]

I'm not in a position to re-do the roof at the moment, but it will need doing eventually. I guess it's obvious really, if I can make the space for my feet, I will!
I suppose I was hoping for an ingenious way to do it that I hadn't thought of