This photo shows Certainteed ‘Mountain Ridge’ roof ridge shingles. Malarkey calls theirs ‘EZ Ridge’. These ridge products are 5-ply in thickness and are designed to pair with 50-year (lifetime) shingles such as Certainteed ‘Presidential’ or Malarkey ‘Legacy’ to name a few.
Many roofing companies will sneak in a product that is a good quality 1-ply high-profile ridge product, but it will not last 50 years. Use the 1-ply on a 30-year roof (not a 50-year roof).
Why do they put a 30-year ridge on a 50-year roof? BECAUSE IT IS CHEAPER!