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How to make a custom copper roof vent - Lyons Contracting

How to make a custom copper roof vent

I’ve had a bunch of people ask me how I made the copper vent in the last post. I had to make a smaller one for the the master bath steam shower; so I took pictures along the way.

Copper vent tube
Copper vent tube

Make a tube: single lock a copper sheet into your desired diameter and length. You should remember geometry from junior high but if you don’t; multiply your desired opening by 3.14, that will be the size of your flat stock before you roll it. Since the vent tube will be in the weather make sure you solder the back seam. This one is a six inches across.

Copper vent ring
Copper vent ring

Make a ring: the protection ring will keep out wind driven rain. The outer ring should be about 2.5″ wider than the vent pipe you just made. Same as the other pipe; single lock and solder the seam.

Beaded outer vent ring
Beaded outer vent ring

Roll a few beads into the copper; it adds strength and beauty to the job.

Struts on inner vent tube
Struts on inner vent tube

Fabricate three struts to support the outer ring, these can be riveted on. Don’t forget to turn down all of your free edges; you want a place for water to drop off before it reaches the inner vent pipe. I test each vent I make, and I have forgotten to turn down the tabs, it leaks, trust me.

Outer vent ring riveted in place
Outer vent ring riveted in place

Rivet the outer ring to the struts, use two rivets per strut and the whole assembly will be rock solid. Also use copper rivets with BRASS mandrels; don’t use the phony copper rivets with steel mandrels; after the rivets are set the head of the mandrel stays behind. When it gets wet it will rust and leave streaks on your beautiful new vent. Spend a couple extra bucks and get the right rivets.

Copper cone vent
Copper cone vent

Make a cone: the cone should be at least 2″ wider than the inner vent pipe. Rivet the seam and solder.

When you make the cone be sure to leave three tabs to rivet the cap to the three struts.

IMG_1056

Copper vent
Copper vent

Ready to be brought to the job site. This vent is completely baffled; meaning it won’t leak during heavy wind driven rain or snow. Since it is made from copper it should last at least 100 years.

Standing seam copper roof and copper vent
Standing seam copper roof and copper vent

Solder a flange to your new vent a the proper angle. Clean the roof area, flux and solder the new vent flange and you are good to go.

I hope the photo descriptions helped; if its too much of a job for you or you just don’t have the time I’d be happy to make one for you.

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