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How to Pan Style Patio Cover, Attached Carport
Tools you will need
Motorize Miter "Chop" Saw (First Choice)
First, define size of area to be covered. Measure the "Projection" (the area from the home to the outer edge of the slab/deck). Now measure the "Width" (that area from one side to the other of the area that runs parallel to the home. Combine measurements to get total lineal feet. (Example: Projection + Width + Projection = Total Lineal Feet).
Second, measure up from the floor to where the header will be mounted. Header may be installed on either the wall or over hang of the home. This will determine the height of your cover.
How To... Patio Cover/Carport
Check to make sure you have all the necessary component parts to assemble the patio cover. This can be accomplished by checking the parts list against the material shipped.
Installing the Header
The first installation procedure deals with header on a conventional home with a fascia board. See illustrations for different applications.
When installing the header on the fascia board of a home, you must locate your starting point. First, take one of your support posts and put it against the fascia board with the bottom of the post at the edge of the concrete slab. Level your post, then on the outside edge of the post mark a line on the fascia board. This mark will represent the edge of the concrete slab. Now establish the amount of desired overhang.
Normal overhang, in width, is one foot, with two foot maximum (Check with local codes and engineering for maximum). Take the amount of overhang and measure that distance using the mark on the fascia board as a starting point. The second mark is where the header will start. Projection overhang, from the edge of the beam outward, is one foot maximum (check local codes for max.).
The ends of the header should be left 1-1/2" longer to fold against the side of the 3" roof pan to prevent water from getting in the end of the header and leaking in a room or at the first splice. The first and last pan should always be caulked on the boxed end, then fold and caulk the header onto the side of the riser.You are now reading to install the header.
First putty tape the back side of the header with two rows of putty tape, one at the top of the header and one right below the first (if not solid behind eve drop, don't use the putty tape). Take the first piece of header and slide the 1" lip under the drip edge of the fascia board.
Screw the header through the drip edge into the 1" lip through the fascia board.
Now screw the header, though the putty tape, to the top of the fascia board using a #10 x 2" HH Screw through the fascia into each rafter tail. Place the second row of screws through the back of the header and tape, into each rafter tail.
When you are ready to install the second piece of header, notch the end where the two meet, a minimum of one inch. This allows the two pieces to slide together for a better fit. Now install the screws on the second piece of header as you did on the first piece. When installing behind drip edge it is recommended to install metal flashing under the first row of shingles and felt and out onto (cut-off) pan roof.
This installation process deals with a home that has no overhang. When installing the header leave enough space, usually 1" below any obstructions such as J-Rail or Mini-Gutter. If the Mini-Gutter is a thin gauge roll form it should be removed by scoring it with a utility knife and breaking it off. Install header at least 1" above where you cut the Mini-Gutter.
Check height where roof cover will attach and make sure mobile home door will be able to open after you have installed the roof.