Framing A Pitched Roof Over A Flat Roof

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.

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. 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. Make sure the pitch of the trusses is the pitch that you want for your new roof. This is a completion video of a flat roof framing.

Building a pitched roof over an existing flat roof it depends on a lot of variables like the condition of the existing flat roof including the state of the joints and the material its made of. How to install a roof over an existing roof. Premade trusses will form the skeleton of your new roof above your old roof. If the structure contains windows then you ll need a low pitch for example.

If excessive damage is present you might not be able to do this at all. 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. 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. This is a completion video of a flat roof framing.

Of course you don t need to live in a modern house to deal with a flat roof. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. You ll have to find the secondary roof hip pitch the same way you found the main roof hip pitch as in figure 3b. 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.