Replies

1. 
   r__ignacki | Jan 15, 2002 03:02am | #1

   *
   What works for me is:
   nail sheet's past hip...
   chalk line....
   cut.

   Watch out for the saw dust up there.

1. 
   Tommy_B. | Jan 15, 2002 05:45am | #2

   *I like to cut on the ground using the sheathing cut factors in "Roof Framer's Bible".Say you have a 9/12 straight hip roof. The sheathing cut is 38-3/8". In other words, take your bottom measurement and deduct that for the top measurement. Provided the frame is accurate this method works great. With accurate cutting your sheathing will run true, straightening minor bends in the hip. Running the sheats long and cutting on the roof will do the same thing but I have never been able make it work for me on the steeper pitches we do.The great thing is it is really simple to get the bottom measurement, so you can put a less experienced guy on the roof. The book has cuts for all even pitches and most bastard hips you will find. I usually have to get a guy to do a roof or two before he get's on board with this method then they will be asking for the sheathing cuts as soon as we get on it.

1. 
   Joseph_Fusco | Jan 15, 2002 06:25am | #3

   *

   No need for anything other then your framing square. If you have 9/12 roof go to the fifth line or the "side cut" line and use the number under 9 there. In this 9-5/8". The numbers are giving for pitch form 2/12 to 18/12.Holding this number on the "body" of the square and 12 on the "tongue" you can mark the angle of the hip on your sheet of plywood. Works every time.

1. 
   charles2_ | Jan 16, 2002 03:00am | #4

   *Thanks. Those are some good speed and safety tips, but is there any good way to minimize the waste of the off-cuts?

1. 
   George_Roberts | Jan 16, 2002 03:11am | #5

   *I cannot handle 4x8 sheets on a roof alone so I use 2x8 sheets. I choose a pitch (8:12) and rafter center (16") that has little waste.I save the off cuts from the first row to start the second or third row. A bit of measuring will determine which is best.

2. 
   blue_eyed_devil_ | Jan 18, 2002 08:11am | #6

   *Charles, don't be too worried about waste. It'll work itself out, if you let it.Heres what I do. I start my bottom ply on the first or second rafter. I do all my cuts in place, no matter what pitch.On the hip, the ply will be hanging off. Immediately cut it along the hip. You'll notice that the piece will fit nicely on the remaing corner that you omitted. Recut this to fit and nail. When you get to the other side, there will be another "drop". If it fits nicely, use it. If not, save it. As you work your way up, every "drop" will find a home.At the end of the job, you will only have one "drop" left.blue