Replies

1. 
   Frankie | May 26, 2020 03:06pm | #1

   Cut the first 3 and see what the incremental difference is. Done. Easy math. You can also cut a block to the dimension of the difference because chances are it's not a perfext 1/16" and use that as a jig to mark the next length of siding.

   However, the problem with precut siding of an incremental length is any variable gets multiplied with each length so small errors GROW.

   Frankie

2. 
   oldhand | May 26, 2020 03:44pm | #2

   In addition to accumulating error mentioned other gremlins will mess up perfect math in such an application, or so has been my experience.If you don't have a ground man and 1 or 2 installers it can make for a long day.

   If I were the ground man I'd measure the long point of each piece as I handed it up and adjust accordingly. Better yet I'd hire a better ground man and install myself. Haha.

1. 
   housenut1 | May 27, 2020 01:21pm | #5

   Thanks oldhand,
   Probably will set my saw up on the adjoining porch which will save a lot of up and down on the ladder.

3. 
   Mike_Mahan | May 26, 2020 06:11pm | #3

   That's easy. The length of the piece below minus twice the exposure.

1. 
   housenut1 | May 27, 2020 01:22pm | #6

   Thanks Mike

4. 
   b0bb0 | May 26, 2020 09:37pm | #4

   Housenut, if the carpenters that made the gable were perfect, and you install siding perfectly, math would be great.
   Trying to cut them all first and then installing them is likely cause more work. You could end up with a pile of incorrect pieces.
   Measure, cut, fit, install one at a time. More time, more climbing if you are alone, but MCFI would give the nicest job.

1. 
   housenut1 | May 27, 2020 01:23pm | #7

   Thanks, b_ward,
   Will do and will set up my chop saw on the adjoining roof to save going up and down because I will be solo.