You can buy the proper flashing to install it on a flat roof and a roof cap that has screen around it to prevent insects from entering.
Range venting through roof vs wall.
That length gets shorter the more bends you have in the vent piping.
Many times your choice depends on where your range is located.
For homeowners who prefer an inconspicuous vent a roof vent is a better choice.
It is considered a little more expensive to vent your range hood through the roof than through the wall.
Range hoods are typically vented using a special duct work that runs through a roof and less often through an exterior wall of your house.
But first we should explain to you how it works.
The duct work is usually concealed within the walls and it is really important to make everything air and water tight.
Hi john yes you can vent a range hood through the roof using a 6 single wall pipe.
This is the most budget friendly type and among the simplest to install.
Be sure to extend the pipe up at least 2 to 3 above the roof to prevent snow buildup from causing problems.
They must withstand a complete temperature range as well as damage from the sun wind branches or even hailstones.
In either case do not vent into the wall or the attic.
While this can be done through the ceiling and out through the roof it s best to go through an outside wall because there s less need for waterproofing.
As for the walls rainscreen compatible intake and exhaust vents are now available.
This is why you need to install the range hood vent properly or you call a roofing contractor.
The more things that you have sticking through the roof the more potential that you have for a leak.
In the case of the roof some venting is unavoidable in order to provide attic circulation so choose roof vents that are durable and watertight.
If it sits on an inside wall venting through the attic and out is a better option but if it is on an outside wall it is more practical to vent through the wall.
If you decide to vent through the roof go all the way out to clear air through the roof and don t just vent it into the attic.