Quote: mr_underhill wrote in post #1
If their purpose is to keep water off the screws, then they should fit quite snugly..
The Herzim strips purpose isn't to seal joints or protect screws from rust - it's fitted to hide the rail's fixing screws, and to give the rail a bit of glamour.
You'll really struggle to get 15mm strip into a 12mm slot - it's hard enough getting the 12mm in there.
The best strip to use is the original type supplied by Hymer. It's a thinner material than Herzim and much easier to fit.
Jandi can supply it at not much more money than Herzim.