Fitted the roof vent
I fitted the roof vent today. That should keep the van pleasant when it's got sweaty, breathing bodies inside it, and should mean that the van doesn't get damp and nasty inside when standing around. That's important to prevent rust and rot! I'm fitting a Fletter 2000 spinning vent, which I've trimmed down slightly to fit between the narrow ribs on the roof of the Mazda.
The vent needs a central air hole and four fixing holes: these are the pilot holes drilled through the roof between the ribs. I've marked them from the vent body and just drilled straight up through the foam headlining into the sky.
Go mad with a jigsaw and a metal blade: sawing holes in the roof of your van is scarily easy and rather good fun. Look Ma, I can see clouds and birdies! This hacked hexagon will let me offer up the top part of the vent assembly to get the body trimmed correctly.
I've offered up the vent body, marked the hole accurately, and cut more closely to that line with the jigsaw. Then I've tidied the burrs up with an angle grinder, and masked up the rough area for priming. The hole isn't perfect and isn't especially pretty but it doesn't have to be: the two halves of the vent sandwich the hole but there is no pipe.
A couple of coats of primer will prevent corrosion on this previously-bare metal. It ain't exactly art, but like the hole, it doesn't have to be.
Job done: the top of the vent spins in the wind. Nice and tidy. The bit you can see rotates on a spindle which is boltedto the roof; the inside part is the other half of the sandwich.
Inside: the vent's grille is discrete and can be closed easily. It snap-fits over the inside part of the body, so can be removed - I'll probably take it off and paint it to coordinate with the interior when I dress the ceiling.