To most people, it doesn’t seem like much has changed in the past 50 years in the asphalt shingle industry. And while this speaks to the long-term durability of the asphalt shingle, there is certainly more than meets the eye.
Asphalt shingles were invented in 1903 and, by the late 1930s, were being used widely in the US. Early asphalt shingles were manufactured using an organic felt sheet that was coated with asphalt, then covered with mineral granules for protection against the elements. Variations to the size and shape of shingles were made over the next several decades, but the basic construction remained the same. Read more.