Roof Ventilation Over Porches

A vented attic where insulation is placed on an air sealed attic floor is one of the most underappreciated building assemblies that we have in the history of building science.

Roof ventilation over porches.

These vents are installed in the soffit the enclosed portion under the roof overhang and permit air to flow up under the roof and into the attic. You can think of something bigger and better. Porch roof ventilation options. Soffit vents have much less risk of water entry.

The joint where the top of the porch roof meets the wall needs to be flashed well and most of the vent details for that look to me like they might leak water under some conditions of rain and wind. Though porches are more open to the air they may still have ventilation problems under the roof. I have roof vents so i have roof ventilation. Renovating your house and looking for ideas to create a unique porch space.

Take for example ridge vents. Problems with porch roofs can cause intrusion of water into the interior of the house. Unlike most houses which sport a regular small porch area with room for just a couple of chairs. In the case of a roof over an.

Porch roofs can also develop ice dam problems like the rest of the house s roof. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. People have strong and differing opinions on whether roof venting affects shingle life.

While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. They range in style from 6 inch round stainless steel vent covers that are placed in the soffit between each rafter to continuous vents that run the entire length of the soffit. So much information has been devoted to the subject of roof venting that it s easy to become confused and to lose focus. The primary reason for adding vents to any roof is to reduce the amount of heat and humidity that builds up under the roof.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. So i ll start by saying something that might sound controversial but really isn t.