Sloped Porch Roof Framing

Frame assembly affect moisture presence movement and evaporation.

Sloped porch roof framing.

To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge. The house roof sloped 5 in. A framing square is traditionally used for laying out the roof and determining pitch. Hip roof construction is one of the most popular methods used for both porch and screen porches.

This is denoted two ways a 1 3 or 1 4 pitch in fractions and a 6 12 pitch in inches which means the roof rises 6 inches for each 12 inches of run. Calculating loads on sloped roofs framing. Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter. When building a porch roof with trusses on this type porch the corner and subsequent trusses are built a little differently due to the slope of the roof.

à highlight detailing best practices for vented low slope roofs to avoid moisture traps and ensure material longevity. Continuous insulation on top of the deck. As you can see the truss angles are constructed to maintain the same slope. Hip roofs allow for extended depth.

Per foot this is called a 5 12 slope and extended 18 in. Q a calculating loads on sloped roofs four engineers shed light on common framing mysteries myths misconceptions by christopher deblois scott mcvicker login or register to download the pdf version of this. More project and tips. Hip roofs are sloped from each wall and do not have the gable ends.

To a large extent they are self bracing with opposite ends pushing inwards so they are strong in relation to wind forces. à explore the differences in enclosure design and ventilation requirements for roofs with attic insulation vs. These illustrations above show the plans for the screened in porch deck framing gable framing ledger truss block side walls and the end wall. Your roof may vary from this and the details of how the porch ties in will vary as well.

There are several variables to consider when determining the proper rafter size. Next soffit framing is installed along the roofs edge. It has been too co. After installing the rafters we still had to extend the porch roof back over the shed roof creating a valley on either side.