Should you screw in the rain valley?

[ingemarlundgren]

Hi. When installing a metal roof, should it be screwed in the valley, or does it not matter?

 

[pacman42]

No!

 

[Matti_75]

Yes, it should be screwed into the profile bottom.

 

[pacman42]

Different manufacturers of sheet metal (and screws) say different things.

If you search online, you will consequently get different answers.

However, I prefer not to have valley gutters on flatter roofs. If it slopes enough, it's actually better.

 

[Paul-Staffanstorp]

Never experienced anything other than screwing into the profile bottom. There must be a reason why the farm screws have a gasket. 🤔

 

[pacman42]

It seems to depend on how easily the metal sheet buckles if you pull too much.

 

[Dilato]

In the valley