Hello. Advice please and any suggestions appreciated. (As long as they are wholesome!!)

A damp patch has appeared in the wardrobe high up on back offside corner. I have looked for signs of ingress but cannot see anything obvious. I know that overwinter I had, inadvertently parked it up with the nose slightly down (therefore not level) and wondered if this was somehow a contributory factor. We have used the 'van several times this year and the patch is dry to the touch and I ensure it is always levelled whether in use or not.
The only external fixture at about the same height as the internal staining would be the rain channel but before I pull it to bits and potentially cause more problems thought it prudent to ask those in the know, hence this message.

If anyone could point me in the right direction or suggest a reliable repairer (I live in Northumberland) it would be much appreciated.
We have had the 'van since new in 2006 and it has never had a problem. Jandi used to do the servicing but since they retired we have struggled to find someone sympathetic to Eribas.
Thanks in anticipation.

does the gas heater pipe go through wardrobe roof?
heater pipe may need a new seal where screw on the extra chimneys
is your rain channel clean to allow rain to escape.
or if lower down may be the underlay leaking, may be able to tweak the screws slightly (are your wheels balanced may need to tighten more screws if not)
can add some tetroseal or renew the underlay the cover strip speak to eriba dealer automotive leisure parts or Tebay
you can do both yourself or call in a mobile repairer
id get the roof up to air even if under a cover its going to be hot till Saturday.

high level brake light in roof could need re-sealing

if the wardrobe at front may also be the upper side light, forgot this earlier as already added sealer to mine when changed bulbs. belt and braces approach.

The third brake light would be my first check.

It's worth packing the locker on the inside of the
light with towels, then gently apply water to the
outside brake light to check for any dampnest
coming through to the toewas.

is the brake light in the wardrobe on this layout?

Thanks for reply. Brake lights and indicators etc are in a cluster low down below rear hand rail. There is no high level brake light. However appreciate your response.
David.

Appreciate your response. The brake lights are not near the wardrobe and are in a light cluster each side of the number plate. There is no wiring or lights etc in the wardrobe.
The only link to the outside is the trauma heater vent which comes up through the wardrobe but the damp is not near this however water tracks in mysterious ways!!
Thanks David.

Thank you for reply. Will check this out but as you know water tracks in mysterious ways but the the centre light is not near the wardrobe, but worth a try.
Appreciate your advice. Nice job while the sun shines.!!
David.

Thank you for your reply. Wardrobe at rear offside corner. The only obvious link to the outside is the Truma heater vent but even this is not that near the damp patch but as water tracks it could be a possible cause.
Appreciate your efforts to help.

David.

Thank you for your suggestions all of which I'll try. Wheels are balanced, we recently had a new bespoke axle fitted with a higher load rating to overcome a persistent tyre wear problem that Hymer failed to solve. However as it has a higher load rating it may well have "bounced" around more than it used to and loosened some of the things you mentioned.
As a point of interest the tyres no longer wear out like they used to do.
Appreciate your response.

David.

Thanks Colin. Good advice which I'll follow up with. I had not thought about the upper light seal being a possibility so will get out the step ladder and have a look.
Appreciate your input, and that of everyone else.
David.

Our Triton leaked at some point last winter from the top front left awning rail and it was amazing where the water had got to. Bit miffed, because, prior to our buying it last April, it had had a rear top brake light leak and had had the awning rail done as well - except I don't think it had...

Thanks for the comments. I will certainly check out all the suggestions made especially the upper light and awning rail/rain channel.

Appreciate the friendliness and helpfulness of Eriba folk.

David.