Gas furnaces usually come with their own specifications.
Painting roof furnace vent.
2 coats coming from one direction and then 2 coming from the other direction to get under all the slanted bits.
Those pipes you see on your roof serve an important purpose.
Your choice of colors unless the city or hoa has restrictions on what colors to use.
The vent pipe must overlap at each joint to prevent gas from leaking.
There s no need to do the sides since they ll be hiding inside the hole.
Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl.
The paint helps protect the pipes from the suns uv rays.
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Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.
Adhere to them even if you are building the vent on your own.
Starting at the furnace connect the various pipes by using the elbow joints working your way towards the chimney.
But they stick out like a sore thumb don t they.
I did 4 light coats with about 5 minutes of drying time in between.
The easiest way is to do this is to use a good quality spray paint.
Watch this video to l.
These pipes can be easily painted to blend in with your roof color.
Some are plumbing vents others serve as vents for appliances.