Either the addition is added to form a t shape to the house with the ridge running perpendicular to the main house roof or the addition is continued on the end of the house making it longer with the ridge running the same way as the existing house.
Gable roof porch extension.
The gable roof on the porch addition was framed with a dropped structural ridge supporting the common rafters above.
Nail 2 boards onto your walls as top plates.
After that you should fix the cornice board to the end sides of the ridge and the load bearing beams.
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Nail the first boards on top of your wall where you plan to build your roof.
A roof and porch ceiling are also constructed and if needed the porch is painted to fit the house.
Then load bearing roof beams fixed to the trusses are extended in the same way.
Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs.
Here we will focus on adding length to the end of a house roof.
Pros of gable roofs.
Also known as pitched or peaked roof gable roofs are some of the most popular roofs in the us.
Again choosing the easy way out we opted to build blind valleys aka california valleys where one intersecting roof is built on top of the other.
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How to build gable roof over deck porch.
It is usually an open space with railings 1 and possibly steps.
For the arrangement of the gable end overhang for the standard roof you lengthen the ridge beam beyond the facade for previously verified length using cut rafters.