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.

Low sloped roof ventilation.

This attic space was typically vented via static air vents. 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. You need to make sure that you have an air space of at least 6 inches between the top of your insulation layer and. On a windy day the vent s turbine mechanism spins which moves hot attic air up and out.

Check the specs for the exact minimum. For over generations multi residential flats buildings were constructed in north american with low slope roofs. November 19 2014 9 08pm 1. So it is essentially boxed in on 3 sides.

The top of the roof meets the wall of the house and the 2 sides also meet walls. You need to create an unvented roof assembly. We raised a ridge vent by 2 inches from the roof surface. 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.

About 12 x 18. I m trying to vent a 1 12 roof that has not been vented. In climate zones 5 6 7 and 8 any air. I don t know what the minimum slopes allowed for your type of metal roof materials are.

One of my goals this year is to learn about ventilation for my customers so we can make good recommendations for them. 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. 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. The downside to turbine vents is that they don t provide much venting power on calm days.

I m a flat low slope roofer. Hi all in new. Ventilate at the gable ends and insulate the ceilings of the space if not vaulted. Look at our fasciavent which has been designed more specifically for metal roofs and provides the intake ventilation for flat to 16 12 pitches.

If your low roof that ends at a wall high side is a pitched roof say 4 12. This clearance is more than sufficient to prevent any water from entering your house through the ridge vent. 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.