When you position the plywood and fan over the vent the back of the fan should be facing you and the front of the fan should be facing toward the vent.
How to install a roof fan vent.
Center the vents on the peak of your roof so the sides of the vent lay flat on the roof.
Learn how easy it is to install an attic fan.
Then cover the bottom of the adaptor with 3m marine sealant and clamp it to the roof until dry.
Choose your vent fan location.
If you need to cut the vent to fit at the end of your roof use a utility knife to make it flush with your home.
Nail the lower corners with roofing nails and tar the heads.
Passive gable mounted vents are able to be installed diy without much difficulty.
Once the fan is centered nail the plywood into the studs to secure the fan over the vent.
To install a roof adaptor cut and clean the hole in the roof as you would normally.
It screws into the wood much deeper than installing it directly into the thin metal of the roof.
However if you are mounting 1 the vent or fan on your roof or if you are installing an electric or solar powered fan you will need to hire a professional installer to do the job.
Hold the vent piece in place until you can nail it down.
Mount the vent as close to the center of the house as possible.
Slide the vent under the shingles so they cover the top half of the vent flange.
Afterward install the roof vent fan flange as you normally would.
Consider two things for maximum performance when you choose the location of the vent.
Roofers are the most qualified to install attic fans mounted 1 on your roof line.
Before you begin make sure all factory installed bolts are tightened.
Get the trade secrets from the jet fan man who has installed around 13 000 attic fans since 1983.
So there you have it.
1 your roof vent fan will be more secure because of the wooden frame.
Mount it as near to the roof ridge without it being visible from the front of the house.
2 using the frame will allow you to pre drill and paint the exposed metal to prevent rust.
Apply a bead of asphalt roof cement on the bottom of the vent.
The lower half of the flange sits on top of the shingles.
Choosing a whole house fan.