I have Timberline shingles but not the ridge cap ones
How do I "make" the ridge cap shingles? https://www.gaf.com/roofing/residential/products/ridge_cap_shingles
Since I don't have the 3-tab shingles. This is for a shed so I don't care much as long as it won't leak. Could I just cut to 1/3?
UPDATE 1 My shingle is metric so it's 39 3/8" long actually. So I am wondering if it is OK to cut it 13" for ridge edge shingle? Plus this has adhesive strip on the top (not center). I don't know if it matters (see highlight below as adhesive strip):
UPDATE 2 (WRONG)
Illustration to use the top part only (the one with one layer). Cut to 1/3 and use the "x" pieces for ridge caps.