Underlay felt up and behind panel?

[bygges]

We have been working for a while repairing a moisture-damaged roof between two facades. Some beams and all the roof decking have been replaced, as well as the panel on one facade.

The underlay felt has started to be laid after this. I now realize that the underlay felt should probably have been laid before the panel replacement, so that it could have been pulled up and in front of the first nailing beam? This would then have created a lock against snow.

Now this has not been done, and the underlay felt is only pulled up behind the panel's ending by a few cm. The sheet metal worker says he will also just pull the sheet metal up behind the panel's ending.

Should some form of sealant/sealing or a small batten be used to lock the underlay felt?

 

[Tjrex]

Redo it right.
At least 30 cm up is what most assembly instructions say and it's a place where snow/leaves tend to accumulate.

 

[bygges]

Do it over, do it right. Most installation instructions say at least 30 cm up and it's a place where snow/leaves tend to gather.

The first nail rule for the panel is about 25 cm up from the sheathing. How should it have been done, placing the underlayment behind or in front of the nailing rule and clamping it?

The panel replacement was done first, and on the other side, the panel was replaced last year. It can't be unusual to lay a new roof with an existing panel?