Remember the roof on the return is there just to shed a small amount of water.
Gable roof no eaves.
Wide especially when the eave overhang is less than 12 in.
Refer to my architectural roof types blog.
A gable roofis a type of roof design wheretwo sides slope downwardtoward the walls and the other two sides include walls that extend from the bottom of the eaves to the peak of the ridge.
The total venting space should equal 1 150 of the floor space.
Like rain snow sleet wind and hail.
In fact providing exit venting at a roof ridge or at gable end vents on a building with no intake venting at the building eaves will increase the building heating costs and can also add to attic or under roof condensation moisture and mold problems.
It is made by extending the ridge board beyond the gable end doubling the last rafter to provide a nailing surface and installing one additional rafter a distance equal to the desired overhang.
In contrast a gable or rake is the overhang of a building that occurs on the side that is topped by a gable roof.
Use larger rake boards such as 1 by 4 inch and 1 by 6 inch when there isn t an eave overhang on the gable end.
This video will.
This is the portion of the roof that protrudes beyond the side of a house or building.
The most common way to add ventilation to an attic is by installing air intakes in the soffits and putting an outlet at the gable of the house.
Do not set it to match the main roof slope of the house.
When an eave overhangs the gable end it is known as a rake.
Avoid gable ends that are over 8 in.
Thick and the overhang from the side wall set between 12 in.
The eave roof and gable.
An eave is defined as the edge of the roof that overhangs the face of a wall.
A passive ventilation system should have air inlets at the base of the roof usually in the soffits and outlets in the peak or gables.
The purpose of your home s roof is to protect the entire structure and you from weather.
The top edge of the board rests against the roof decking and the bottom edge covers the siding or brick.
To 18 in depending on the style of the building.
A slight return just enough to keep water from pooling is all.
Now that we have that out of the way let s get to the heart of the matter venting a house with little to no eaves or soffits.