How To Do A Roof Chop

A horizontal cut called the seat cut and a vertical cut called a shoulder cut.

How to do a roof chop.

The roof rafters provide integral structural support to the roof. To lower that profile dry lakes racers and hot rod builders mimicking the look of racecars cut the roof off of the vehicle and reattached it after removing part of the sheet metal and posts through the center of the window line. Read this before you chop. The seat rests on top of the wall that you re attaching the particular rafter to while the shoulder cut parallels the wall and allows several inches of each rafter to overhang the roof.

Each shingle should be held by four nails. This is where the quality of planning for the chop shows up. The next cut will be the back of the roof. There are two basic methods of pitched roof construction.

It took over a year to finish the roof chop on my car. The deck lid piece is next. A quick glimpse of the chop taking shape. Then fold the flashing over the peak and cover the cut ends with self stick underlayment.

It takes a month to finish weld the chop. This process is much easier with two people. Any fool can do this. Roof valleys channel a lot of water so they need extra protection.

Pitched roof construction. Finally it can take up to a year to finish the bodywork on a bad roof chop. Cut the last ridge shingle to the length you need but be sure that no part of the roof is exposed. Since the angle will be different now cut slits along the edge of deck lid opening.

Cut the flashing back to the peak along each crease. This will allow you to push down the lip to meet the correct angle. A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc. Do the same with the next shingle continuing this step until you get to the far edge of the ridge.

Chopping a top what. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. Start by installing self stick underlayment on the decking. I added them after we started cutting it but it worked ok.

We used some clamps to hold it while we cut the a pillars. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters. It takes one weekend to chop the top and tack weld it back on. Earlier model cars and pickup trucks were boxier shaped than the ones produced in the 50s and 60s and not very aerodynamic.

Be careful to drive nails straight rather than angled. See all 21 photos. As you can see from the cut tack our roof actually went up about a inch. Seriously if the doors don t fit right before you cut the roof off a car i can assure you that they won t fit after you weld it back on and the results could be permanent.