Low Slope Roof Ventilation System

For over generations multi residential flats buildings were constructed in north american with low slope roofs.

Low slope roof ventilation system.

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. Resilient synthetic rubber membrane widely used on low slope roofing projects for over 50 years in the united states and worldwide. Mineral surfaced roll lies flat so it protects against weather and helps resist moisture. Because it s constructed of a hardworking fiberglas mat it lasts longer.

Most low slope and flat roofing systems are designed to have their seams put together with glues and adhesives ranging from solvent based seam lap adhesives used with epdm black rubber to tar and roof cement used with asphalt and modified bitumen roofs. Owens corning mineral surfaced roll is the economical solution for any low sloped roof. Larger flat roofed applications low slope such as residential condominium complexes row homes and town houses and smaller applications such as residential porch and garage transitions from the main home where the slope of the roof changes dramatically. This attic space was typically vented via static air vents.

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.