As we are building covered porches and decks I realize when I show pictures to friends and possible clients where the details are that make it complicated for people to add their own porch with a roof over their deck / entrance way / addition. There are a couple of details to watch out for: Envision it like this: you are putting a box onto your existing house. 1.)make sure that the roof of the house and the box you add have the same height ( bottom end of the 2 roofs ) It makes everything much easier 2.)what happens to the front wall of where the 2 roofs meet : Where your new box gets added to the existing house you need to cut off the gutter and the overhang the complete width of your new box meaning the outside from rafter ending to rafter ending. You need to cut back to the wall of your existing house and now extend the wall all the way to the top of the rafters of the box you are adding on. 3.) what happens on top of the roof where the 2 roofs meet: continue the top beam of your new box you added until it meets the old house roof from this point you connect with a support piece in a diagonal to the end of the rafters. now you can cover it all. It is a lot easier than it sounds In most cases you will want to see the roof structure of the new box rafters and vaulted ceiling. All that ends at the wall of your existing house so you do not need to worry what it will look like in the part where the 2 roofs over lapp. You can build all of that with any old 2x6 to support the new plywood that will cover that part.
4.)Structural requirements: You need to either have posts on the front and the back of your new structure or you can save the ones at the back and tie the structure into the house wall. If you do that you need to open the outside of the existing house wall and support your plates ( the pieces where your rafters sit on ) somehow. Ideally you add a couple of studs underneath them into the stud wall and set the plates on top. Make sure you use solid posts and brace them a bit so the structure gets a bit of sheer strength if you do not put up walls with sheeting anyway. If you have posts lift them off the ground so the water does not soak into the posts and destroy the bottom.
Timber frame, timber structures,hybrid structures,gazebos,decks,renovations,post and beam structures,small homes,entrance way upgrades, roof build ups,add on elements in timber frame style, covered patios, staircases,
history of the timber framing trade, how to buy a timber frame, masonary wood heaters, wood boilers,
straw bale houses, hempcrete