Leaking Coromal corvair PC511

Thanks for your help
a] B4 the shade heavy rain on RHS, now not heavy but light and misty, still leaking.Shade was for HiLux
b] Both items cleaned with turps and resealed witk W/P silicone.
c] Severe = 5-6 bath towels soaked after 30 mins of rain starting.
d[ Water ingress at wall/raised floor at RHS rear under cupboard and under bed sometimes.
Thanks ....FRom Bill on behalf of Mark who is in the middle of ITA.

Firtsly silicone is an inferiour sealant and has some very real problems.

It does not stick to surfaces intamately and leaks can develope under it.

To be at all effective it needs to be applied under compression being squeased out of the joint.
Even then over a number of years it ( particularly cheap versions) will dry out, shrink up and leak.

Polyeurathane ( sikaflex and similar) is a far better product, harder to work and way more expensive...but far superiour.

Resealing something that has been sealed with silicone can be a problem.....getting the surface clean and free of silicon sufficient for a good bond is no picnic.



Severity
If you have a leak that severe, ya not looking at a leak on a vertical surface...unless it has water flow......you have to be looking at somewhere where water is flowing or pooling....hell maybe even a hole.

5 to 6 bath towels in half a hour.....HELL, that is not a leak, that is a flow.

I think you need to start having a good look up on the roof.

every joint, lap, and rivet.....where the roof meets the walls would be a good suspect and deserving of a serious poke.

If you have that quantity of water...testing with the garden hose should yeild results.......but dont just go hoseing about....you need to be systematic about it

cheers

Thanks For your helpful comments
We really need to hear from PopTop model PC511 owners.
This leak is sure tricky...It is not apparent until at least half hour to 45 min after heavy rain. Then the fun starts.
Drastic measures of taping, all window and brake/turn lights on rear RHS does not fix. All pop rivets have been redone. I just cant think of where to start from the pop top base. I still suspect the window seals ( not a pro man) but why the 40 min delay???. Is the frame wood or alum channel which may help/promote tracking.
How does the water come from the other side if possible. Should the van be tilted to the front to allow run off/ then what??
Regards Bill and Mark

Thanks For your helpful comments
We really need to hear from PopTop model PC511 owners.
This leak is sure tricky...It is not apparent until at least half hour to 45 min after heavy rain. Then the fun starts.
Drastic measures of taping, all window and brake/turn lights on rear RHS does not fix. All pop rivets have been redone. I just cant think of where to start from the pop top base. I still suspect the window seals ( not a pro man) but why the 40 min delay???. Is the frame wood or alum channel which may help/promote tracking.
How does the water come from the other side if possible. Should the van be tilted to the front to allow run off/ then what??
Regards Bill and Mark

Thanks For your helpful comments
We really need to hear from PopTop model PC511 owners.
This leak is sure tricky...It is not apparent until at least half hour to 45 min after heavy rain. Then the fun starts.
Drastic measures of taping, all window and brake/turn lights on rear RHS does not fix. All pop rivets have been redone. I just cant think of where to start from the pop top base. I still suspect the window seals ( not a pro man) but why the 40 min delay???. Is the frame wood or alum channel which may help/promote tracking.
How does the water come from the other side if possible. Should the van be tilted to the front to allow run off/ then what??
Regards Bill and Mark

I agree with Bill, my van had a small leak in a rear corner , it turned out to be the seal around the rear top clearance light. Keith

Hello Keith C
I need to know just what pop top model corvair you have as all the lights are at low level at the rear and only a mid light at the top.

Regards ......Bill and Mark

Thanks For your helpful comments
We really need to hear from PopTop model PC511 owners.
This leak is sure tricky...It is not apparent until at least half hour to 45 min after heavy rain. Then the fun starts.
Drastic measures of taping, all window and brake/turn lights on rear RHS does not fix. All pop rivets have been redone. I just cant think of where to start from the pop top base. I still suspect the window seals ( not a pro man) but why the 40 min delay???. Is the frame wood or alum channel which may help/promote tracking.
How does the water come from the other side if possible. Should the van be tilted to the front to allow run off/ then what??
Regards Bill and Mark