WaPo – Why your asphalt shingles are falling apart



As I’m not a chemist/chem-e, not sure whether to believe the solution suggested. However, after having spending multiple thousands of dollars a few years ago getting my roof re-done, food for thought


  • 30-year-warranty asphalt shingles started to fall apart in nine years and suffered a catastrophic failure just a few years later
  •  national association that represents most of the asphalt shingle manufacturers refused to answer questions
  • Attempted to interview the top three USA shingle manufacturers. Two refused to answer questions, and the third company put spin on their answers
  • many of the shingle manufacturers are blowing too much air into the liquid asphalt at their factories
    • need to blow some air into the asphalt – enough so the asphalt doesn’t drip from your roof on a hot summer day
  • But blow too much air into the asphalt, and you pre-age the shingles
  • discovered something that can save homeowners money
    • copper ions react with asphalt molecules, slowing down the aging process
  •  copper prevents algae and moss buildup on roofs and ship hulls
    • Author claims copper can make asphalt shingles last 40, 50 or even more years (is this to be believed?)
  • put a 12-inch-wide roll of very thin copper on top of the cap shingles that run across the ridge of your roof and any hips    
    • Each time it rains, some of the copper ions wash down onto the shingles.
      • copper bonds to the asphalt and prevents one asphalt molecule from connecting to an adjacent asphalt molecule.
      • If too many asphalt molecules link together like a long freight train, the colored granules fall off and cause the shingles to curl up
    • must use solid copper nails to attach the copper strip to your cap shingles.
      • The copper same width as the cap shingles
      • will not interfere with any ridge ventilation products.

This isn’t super cheap … on amazon, 12″x20′ copper roll is $76 (https://www.amazon.com/AMERIMAX-PRODUCTS-8506712-12-Inch-Flashing/dp/B000BO9MZ4/ref=asc_df_B000BO9MZ4/?tag=hyprod-20&linkCode=df0&hvadid=216767797588&hvpos=1o2&hvnetw=g&hvrand=7542736933330789055&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9014312&hvtargid=pla-369415660771&psc=1) and solid copper nails $10/lb (https://www.amazon.com/Hillman-Group-42080-Copper-Slating/dp/B000PAWZJO/ref=asc_df_B000PAWZJO/?tag=hyprod-20&linkCode=df0&hvadid=193151859311&hvpos=1o1&hvnetw=g&hvrand=12977267365234918693&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9014312&hvtargid=pla-310667078762&psc=1) though certainly less expensive than re-reroofing

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