Fantastic Fan Vent Installation

Finally got the Fantastic fan vent installed.  These are among the most popular fans installed by do-it-yourselfers as well as professional RV builders.  It comes in several versions, so we decided to go pretty simple, 3 speeds in or out.  We decided not to get the remote, or thermostat, or the thing that closes it when it rains.

After looking at the roof and the bracing, I decided to build an white oak framwork around the opening, although pine would have also worked.   In boats, white oak is the preferred framing wood - so maybe it is just a holdover.     I used a table saw to cut it the same width as the metal roof supports.  The one long piece is there because that is where I will make the joint for the oak paneling on the ceiling.  The fan screws could then come down through the metal roof into the wood.

Fan Vent Framing

Fan Vent Framing

I chose about the only place that it would go that avoided the ribs in the roof, making it simple, that is the area is just forward of the back of the sliding door.   Once the framework was in, I drilled a hole in each corner of the opening and then used a metal sawsall to cut the metal out.    The framework was about 1/4″ bigger than the size of the fan - no need for a press fit.    The next step was to grind the metal and two coats of primer on the edges.      

I bought the fan mount kit, which was probably not necessary.   There was a type of mounting putty with it which was put around the bottom of the mounting flange.   Then I lowered it in from the top and went below to make sure it was centered.  By moving an 8 foot ladder from one side to another, you don’t have to get on the roof, I used an 8′ ladder that was leaning on the van roof drip channel.   I predrilled the roof metal thru the holes in the flange and used the metal screws that were supplied.     By doing the final tightening with a hand screwdriver, I tried to make it even  - same tension on each and about the same amount of putty starting to squeeze out.   One good thing to have would be a long bit so the vent cover didn’t get hit by the drill chuck.

I put a little white silicone caulking in each hole before the screws and went around the flange edges with the same silicone.  A roll of paper towels will come in handy.

Fan from the inside

Fan from the inside

It rained last night and it didn’t leak.    I will wire it to the 12 volt system soon, and once the roof interior is done, will put on the trim piece that was supplied.

Got the ceiling panels on and put on the trim  - works fine.

Fantastic Vent Fan Finished

Fantastic Vent Fan Finished