Hi,
>
> I have a shed which has an onduline roof. It's about 11 years old.
> Where the supporting cross members support the roof I have noticed
> some cracking and wear. There is one leak which could be due to this > slight cracking.
>
> Q: is there a treat ment for onduline to keep it water tight
>
> Thanks
>
> Jonathan
Bitumen
NT