Hi all, we have an Elddis 115, 2019 vintage with black streaks down the wall under the bathroom sink shelf and a kind of black powder gathering on the shower tray below it. I've realised that the shelf has no sealant between it and the wall allowing water to run behind it. So, I'm thinking this could be the shelf rotting and could potentially be a warranty claim if sealant should have been applied. Now wondering if other Elddis vans have sealant or are they all the same. Thanks for any info.