Framing A Pitched Roof Over A Flat Roof

Make sure the pitch of the trusses is the pitch that you want for your new roof.

Framing a pitched roof over a flat roof. The hip pitch in relation to the secondary roof measures out at 9 5 8 18 13 16. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. These requirements cover the design and construction of roof ceiling systems including roof framing roof drainage roof sheathing ceiling finishes roof ventilation and attic access.

Of course you don t need to live in a modern house to deal with a flat roof. If excessive damage is present you might not be able to do this at all. If the structure contains windows then you ll need a low pitch for example. You ll have to find the secondary roof hip pitch the same way you found the main roof hip pitch as in figure 3b.

This is a completion video of a flat roof framing. If you re adding to the gable end of the house the side wall that goes up to the roof s peak it s fairly easy to extend the existing roofline over the new space says curt schultz a realtor architect builder in pasadena calif. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. That s a simple low cost solution that can tie in well with the main house.

This is a completion video of a flat roof framing. Repeat the same procedure on the side of the hip that faces the secondary roof using the hip pitch for that roof and measuring distance b. Chapter 8 includes specifics for such things as allowable lumber to use the moisture content of fire retardant treated wood allowable rafter spans and use of. How to install a roof over an existing roof.