Very low pitch (1 degree) & zinc

[Lor0183]

Hello, we have a small part of flat roof, by our side return extension - about 3m x 1.5m (the main part of the extension roof is pitched). It's been built with a 1 degree slope, along the 3m run (this was due to issues with height with neighbours). I know zinc standing seam requires min 3 degree slope. A contractor suggested we could go with batten roll, which would help to avoid water ingress at the seams.

Does anyone with experience with roofs think this would be OK, or better to re-do and (somehow?) add a greater slope on top of what's built so far? The only issue is if we have to re-do, we have to have the slope going the other way (on the 1.5m side), because we can't increase the height the other way due to neighbours.

 

[datarebal]

take a look at Alwitra . can be made to look like standing seam or batten roll

 

[noseall]

1 degree? Lol. That wouldn't be enough to take the sag out of some joists.

 

[hardmetalking]

You can install zinc or lead on that pitch but you will get a lot of standing water. 3 degrees is the magic number water droplets lose surface tension and run off occurs. Surface water isn’t a problem but dust and debris will blow onto it and stick, then when the sun dries it out you’re left with horrible dirt patches.
It’s an easy fix if you know how

 

[freddiemercurystwin]

You can install zinc or lead on that pitch but you will get a lot of standing water. 3 degrees is the magic number water droplets lose surface tension and run off occurs. Surface water isn’t a problem but dust and debris will blow onto it and stick, then when the sun dries it out you’re left with horrible dirt patches.
It’s an easy fix if you know how

@hardmetaltalking, I thought you'd died? Why have you been away for so long?