Flat Roof Soffit Overhang

While flat soffits work well in some situations in most they result in pork chop eave returns.

Flat roof soffit overhang.

Closed eaves with flat soffit and no raised heel. The default in eave design is a flat soffit. See below i need to acknowledge there are some good reasons in some places to not have a large overhang. The exposed timber rafters and decking are susceptible to ignition and.

For instance i think that in heavy snow country large overhangs can lead to ice dams forming on the overhangs snow melting. Damage is also caused by birds and squirrels nesting inside eaves. When you do use a flat soffit make sure to include a raised heel on the truss. Soffited eaves and gable overhangs are susceptible to water damage caused by ice dams improper flashing torn shingles and faulty gutters.

And once water has seeped in the rot spreads quickly because the wood stays soggy inside the dark dank space. Proceed with extreme caution when using a flat soffit. Closed eaves with flat soffit and raised heel. Even if most people don t register what it is that makes a home seem special using a sloped soffit is an easy way to make a home look old or built with more craftsmanship than typical new homes.

Soffits a soffit encloses the underside of sloped or flat roof overhangs. In hot climates the general rule of thumb is to lengthen and extend the overhang. To determine the number of squares of soffit required measure the under eave areas and multiply the length by the width for each overhang. This video will.

Soffits are commonly constructed from fiber cement panels metal panels stucco vinyl panels or wood sheathing. Metal panels untreated wood panels and vinyl attic vents figure 1. Add up the total of all overhangs and divide the total by 100 to determine the number of squares. Overhangs are common in most house designs providing protection against both wind and rain.

The length of the overhang depends primarily on the climate. These guidelines are useful in the construction of any gable or any cantilevered or flat roof. The siding underneath the overhang is known as the soffit.