To make sure you put it in the right place you need to make reference lines.
How to install metal roofing ridge cap.
Begin metal roof ridge cap installation by drawing lines the closure material goes on before the actual ridge cap.
How to install ridge cap foam closures on a metal roof for a non vented ridge cap apply butyl tape sealant at to the inside of the chalk line on both sides of the ridge cap.
Make a mark at the cap s lower edges both sides at one end of the ridge.
Locate the butyl tape so that the ridge fasteners will penetrate at the center of the butyl tape once the ridge cap is in place.
See the illustration below.
In this part i cover installing vented foam closures and the rid.
We use a z trim and make sure to have tape seal underneath the z trim and between the ridge cap and the top of the z.
If the ridge is only 15 20 long repeat step 1 at the opposite end of the ridge.
You use your ridge cap to mark the ribs so that you know where to place the z trims.
This is part 6 of a 6 part video series explaining how i installed a metal roof on my house.
You cut z trims for the top of your panels.