Knackered ply and a leaking garage door

[beacon]

Hi. So my 2007 Adria has a 12mm ply base throughout. I've find some dried-out damp on the rear offside edge, under the garage. It's quite crumbly.

At first i thought it might be water kicked up by the rear wheel but the ply on the other side is fine, so I reckon it's probably a leak.

As it rained last night I just went to check and there is a bit of water pooling where indicated. Although it's not got right inside the metal frame (light rain), I think this is probably the culprit.

I have two questions: first, I presume buying and fitting a new seal is a sensible next step - it looks fine, but I guess it's the most likely culprit. Is fitting one relatively easy? I can't see how it comes off.

Second, lots of advice I've had is that ply is fine when it's dried out, the rot doesn't spread like in wood. Is this true? It'll be very fiddly to cut out and replace the wood, not least because the interior of the garage is lined with vinyl, so I'd probably have to remove all of the vinyl to make it look neat.

Thanks!

Thanks!

 

[Landy Andy]

My Adria has the same looking garage and setup. I also get water sitting at that point on both garage doors. Personally I don’t think that is the cause of your issues.

 

[Landy Andy]

If you look how the seal works, it seals on the inner/higher lip, so the water you are seeing is before that. I would suggest that the damp you are seeing is from untreated/unsealed wood that is getting high amounts of moisture sprayed up from the rear wheels. I fitted mud flaps as I didnt like the idea of so much spray there and also sprayed so wax oil over the wood.

 

[beacon]

Thanks. Spray was my first thought, but it seems odd that it's only on one side?

 

[Landy Andy]

Is the design of the motorhome the same both sides? Mine has gas locker, drop vent, waste water drop pipe one side and nothing the other. Also it may just be a bit of wood that wasn’t treated as well, or had a void.

Just thoughts.

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[beacon]

Thank you. There's no big difference on each side: on the damp side, behind the wheel, it's just the garage; on the dry side, the floor structure is exactly the same; the only difference is the waste water drop pipe.

So it's plausible the waste pipe is just enough protection to make a difference, I guess. And as you say, perhaps it was less well sealed, too.

 

[Landy Andy]

Is the floor not different on the two sides that one side it goes all the way across to the side skirt and the other finishes short of skirt? Or am I seeing pictures wrong?

Its a different to my Adria coral.