Flat Porch Roof Ventilation

The answer depends on the type of roof you have.

Flat porch roof ventilation.

A cold roof or hot roof. Problems with porch roofs can cause intrusion of water into the interior of the house. The article notes that the ventilation cannot overcome the significant humidity drive into the flat roof structure caused by small air leaks. It depends on where the insulation is installed.

Porches are often attached to the house. People have strong and differing opinions on whether roof venting affects shingle life. Roof vents help make a home more energy efficient and allow humidity and hot air to escape the. Soffit vents have much less risk of water entry.

Any type of roof from tpo to epdm can be either hot or cold. Consequently the article concludes that the concept of venting a flat roof is no longer safe and instead don 039 t vent the flat roof and install a smart vapor retarder inboard. If you have an enclosed porch ceiling have vents to clear the roof cavity of moisture. Porch roof ventilation options.

Proper roof ventilation is an important aspect of home construction. How much ventilation does a flat roof need. I installed collar ties to leave an open space above the finished room along with r 15 insullation and installed a fan on a thermostat at the end of the roof in addition to ridge vent to suck all the hot air that collected between the roof and porch ceiling. Durable plastic and glass panels in your porch roof provide weather protection while also maximizing natural light.

Though porches are more open to the air they may still have ventilation problems under the roof. Last year i replaced a flat porch roof with a 6 12 pitch. Hot roofs have the roof deck then insulation then the roofing material.