I'm sure we've spoken to a few VW T4 and T5 owners who complain that their poptop roof canvas is difficult to keep water proof because of its sheer size.

On this Berlin campsite, we've spotted this:-

IMG_9444-11-june-berlin.jpg - Bild entfernt (keine Rechte)

which looks to be a clip on cover which totally covers the fabric and fibreglass lid of the poptop. I apologise if this is a well known fact.

Randa