Gas fumes in boat garage

[MisterE]

I have a 22x14 boat garage that is sealed fairly well. The problem is that the fumes vent from the cap and/or the filter or tank. My battery charger is in the rear compartment with the gas tank and i leave it open to vent the charger as the manufacturer suggests. After a day of boat sitting in there, the fumes are unbearable and i like to "get away" from the wife at times during the week and dink around in there but it gives me a headache.

Any idea if i can "seal" this area off even if i have to close the rear lid? And is there a trick to make the gas cap seal? I realize I would have to make the cap vent when using the motor.

Andy

[-BjBnet-]

You most likely have a plastic tank which is where the fumes come from, theyseep through the tank.
Best thing you can do is install a ceiling fan (which helps to dry your boat anyway) and a vent somewhere.
that's my 2 cents.

[fishin couillon]

Quit drinking. It's probably the boozes that give the headache, better yet, the wife.

[Neilslure]

Could install an exhaust fan in the roof or gable. They move enough air it would probably clear it out fairly quickly.

[stevieraybla]

If it ain't a SKEETER then that may be your problem, those other boat do really stink up your place.

[fishin couillon]

I have never had a problem with mine since i bought it 3 yrs ago. Hatch stays open and charger plugged up.

[MisterE]

I think i sealed it too well with foil covered foam. You can see the remaining of the second roll there in the pic. I wrapped all the walls and continued on the bottoms of the ceiling joists and every seam is sealed with aluminum tape.