Roof vent leak.

When my Tiger was new, I had a slight leak from the small non-powered bathroom vent. It amounted to a large drop or two accumulating on top of the toilet lid after a rainy night. On trips that passed by the factory, they tried resealing around the vent and its perimeter screws twice.

I finally dabbed a bit of silicone sealer on the metal rivet heads that attached the plastic dome to the lift frame one day while waxing the roof. Fixed it! Seven years on, still good.

Jim, "Mo' coffee!"

Mocoondo wrote:
You should not be getting any water in through your ventdomes. Assuming that the outside sealant is in good shape, the next thing you will want to check is the actual crank itself. As ventdomes age, the crank gets more and more play in it. This play translates into play in the lid, even if the crank is tightened down all the way. If the lid is coming up some and allowing water in during a big rain event, you should consider replacing the crank. Ventline makes a direct replacement "crank kit" that takes all of about 5 minutes to install and your Ventdome will once again pull tightly down on the seal.

Thanks. I will check. It did not leak at the margins as it would have run under the glassboard ceiling and exit through a seam.

You should not be getting any water in through your ventdomes. Assuming that the outside sealant is in good shape, the next thing you will want to check is the actual crank itself. As ventdomes age, the crank gets more and more play in it. This play translates into play in the lid, even if the crank is tightened down all the way. If the lid is coming up some and allowing water in during a big rain event, you should consider replacing the crank. Ventline makes a direct replacement "crank kit" that takes all of about 5 minutes to install and your Ventdome will once again pull tightly down on the seal.

I'll probably also install Maxair covers on all three of my vents. I was cleaning the roof the other day and noticed the rear vent lid has the two end tabs in the hinge missing; appears somehow they've broken off. No idea how but Maxair will prevent leaking like pugsly wrote.

X2 on installing a Maxxair vent cover. Between trips when our Class C is parked in the driveway, I always crank the vents open. Never get any water with the vent covers.

Another thought - the plastic vent lids deteriorate and get brittle from exposure to the sun. I just replaced a vent lid due to a crack in the plastic. No water got in because of the vent cover, but the crack in the lid whistled when driving.

All of my vents have some sort of gasket on lip that lid closes against.

No gasket......install one



They are even available at Sears

pugslyyy wrote:
You don't mention it, but do you have a vent cover (like a Maxxair or similar)? If not, that is what I would do first.

I like having the vent cover simply for keeping the vent open while rolling down the road.

I get a little mist/spray in heavy rain so close the vent over the bed but leave the one in the all open.

This is a simple crankup dome vent.

You don't mention it, but do you have a vent cover (like a Maxxair or similar)? If not, that is what I would do first.

I like having the vent cover simply for keeping the vent open while rolling down the road.

I get a little mist/spray in heavy rain so close the vent over the bed but leave the one in the all open.