Low Sloped Roof Ventilation

I don t know what the minimum slopes allowed for your type of metal roof materials are.

Low sloped roof ventilation.

To properly ventilate a low slope roof we ve created a special assembly method which allows the installation of ridge vent and eliminates associated roof leaks. For over generations multi residential flats buildings were constructed in north american with low slope roofs. This clearance is more than sufficient to prevent any water from entering your house through the ridge vent. This attic space was typically vented via static air vents.

The top of the roof meets the wall of the house and the 2 sides also meet walls. Last year i ran into several flat and low slope roofs with vents on the top of them in different scenarios 2 12 slope barrels and near dead level. On a windy day the vent s turbine mechanism spins which moves hot attic air up and out. So that probably means you are going to use a modified bitumen roof or something like that for the 5 12 low slope flat roofs.

Look at our fasciavent which has been designed more specifically for metal roofs and provides the intake ventilation for flat to 16 12 pitches. We raised a ridge vent by 2 inches from the roof surface. In climate zones 5 6 7 and 8 any air. The roof design included an interstial space of 1 5 to 2 meters between the ceiling and roof deck.

Where wood shingles or shakes are used a minimum 1 4 inch 6 mm vented air space separates the shingles or shakes and the roofing underlayment above the structural sheathing. November 19 2014 9 08pm 1. I m trying to vent a 1 12 roof that has not been vented. Turbine vents are not low profile but in windy climates they provide more ventilation than other types of roof vents.

Ventilate at the gable ends and insulate the ceilings of the space if not vaulted. If your low roof that ends at a wall high side is a pitched roof say 4 12. If you want a low slope roof without any spray foam or rigid foam there are only two approaches that will work as far as i know. 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.

You need to create an unvented roof assembly. The downside to turbine vents is that they don t provide much venting power on calm days. About 12 x 18. Hi all in new.

Check the specs for the exact minimum. You need to make sure that you have an air space of at least 6 inches between the top of your insulation layer and. I m a flat low slope roofer.