Roof Hip And Valley Of Butterfly Roof

The hip and valley factor varies according to the slope of the roof as shown in the table below.

Roof hip and valley of butterfly roof.

Not only are the upfront costs higher than with conventional roofs but the maintenance will also. The roof type in question has a number of different names including inverted pitch roof butterfly roof and even london roof. You can combine gable and hip designs with a cross footprint home as well. Valley gutters are often lined with felt or even.

It is so called because its shape resembles a butterfly s wings. A hip or hipped roof slopes down to the eaves on all four sides forming a horizontal ridge a roofer will usually put a vent along the top of this ridge. Find the square root of the result. For any roof slope expressed as x in 12 rise in run the hip and valley factor is determined by finding the square root of rise run 2.

The complexity of the design makes the butterfly roof more expensive. They were also commonly used in georgian and victorian terraced house architecture of british cities where they are alternatively termed london. Although a hip roof is not gabled it may have dormers or connecting wings with gables. The butterfly roof lends itself to an environmentally friendly home design as pv solar panels water collection systems and natural light can all be easily incorporated.

When the building is square the hip roof is pointed at the top like a pyramid. Divide the rise by the run the run is 12. A butterfly roof is a form of roof characterised by an inversion of a standard roof form with two roof surfaces sloping down from opposing edges to a valley near the middle of the roof.