[Stereo]

Onduline is good but needs plenty of support. It won't span at all. I used it a few times and it sagged over anything more than 600mm. But, even with the sag, it held up. I'm planning some new sheds next year and will use Onduline with battens at 400mm centres. It's really easy to work with and handle too. Remember to get extra large rubber washers on your fixings so it doesn't rip in the wind.