Low Slope Roof Ventilation System

This attic space was typically vented via static air vents.

Low slope roof ventilation system.

For over generations multi residential flats buildings were constructed in north american with low slope roofs. For this design to work well on a low sloped not dead flat roof an outside air inlet is provided by a soffit or roof overhang built at the low end of the roof and a roof cavity air vent outlet is provided along the high or up slope end of the roof using a built up half ridge vent. Because it s constructed of a hardworking fiberglas mat it lasts longer. Mineral surfaced roll lies flat so it protects against weather and helps resist moisture.

The roof design included an interstial space of 1 5 to 2 meters between the ceiling and roof deck. Residential low slope roofing can generally be divided up into two broad categories. Owens corning mineral surfaced roll is the economical solution for any low sloped roof. Resilient synthetic rubber membrane widely used on low slope roofing projects for over 50 years in the united states and worldwide.

Since most low slope roofs are not vented ice dams are much more likely to occur and cause extensive damages to the roof and the interior of the house as it is a lot easier for water to travel upward on a low pitch roof.