This is the portion of the roof that protrudes beyond the side of a house or building.
Gable roof no eaves.
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.
Refer to my architectural roof types blog.
For gabled roofs the roof rafters extending beyond the wall caps creating an angled roof overhang on the eaves.
In contrast a gable or rake is the overhang of a building that occurs on the side that is topped by a gable roof.
Do not set it to match the main roof slope of the house.
One by 2 inch rake boards often cover the exposed top edge of the siding when there also is an eave overhang on the gable end.
Remember the roof on the return is there just to shed a small amount of water.
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.
An eave is defined as the edge of the roof that overhangs the face of a wall.
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.
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.
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.
The eave roof and gable.
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.
The total venting space should equal 1 150 of the floor space.
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.
A rake on the gable end of the roof can be created with the construction of additional roof framing.
Avoid gable ends that are over 8 in.
Due to the steeper angle of gable roof the maximum width of the eaves is narrower than other shed styles.
To 18 in depending on the style of the building.
The final step is putting the roof on the eave and addressing what happens in the gable itself.
Like rain snow sleet wind and hail.
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.
Thick and the overhang from the side wall set between 12 in.
Wide especially when the eave overhang is less than 12 in.