Venting A Low Slope Metal Roof

Sunday august 5 2018 the traditional metal roof types such as 5v crimp shown above and corrugated are rated by the manufacturers for use down to a 3 12 pitch three inches of vertical rise for every foot of horizontal run.

Venting a low slope metal roof.

One has to use a metal roof that is engineered to be able to go down to your 1 12 or even 1 4 12 pitch. Depending on the length of the shed roof a 1 12 roof slope is not flat. Most structural metal panel roof systems are designed to resist the passage of water at laps and other. Can metal roofing be used on a low slope pitch roof.

There are no shingles that can be safely instaled at less than 3 12 pitch and not metal roofs that should go to less than 2 12. These are not as effective but still provide some ventilation. Structural metal panel roof systems can be used for low slope roofs because of their hydrostatic or water barrier characteristics. Look at our fasciavent which has been designed more specifically for metal roofs and provides the intake ventilation for flat to 16 12 pitches.

Smartvent can be modified to provide intake ventilation for new roofs or re roofs through the fascia board for low slope roof with less than a 4 12 pitch. In the case of hip roofs you could get away with static box vents or power vents with a thermostat. Venting low slope roofs posted in energy. Most standing seam roofs require 3 12 pitch for proper water shedding.

It is important to note structural metal panel roof systems can be used for steep slope roof assemblies too.