20 year life

Parsing, “Lifetime Warranty”

Actuarial (and Other) Calculations Apparently, roof shingles are getting better and longer-lasting. Traditionally, a standard 3-tab or 4-tab asphalt shingle had an expected life of about 20 years. Now, in addition to the 30-year “Timberline” brand, there are a bevy of new, longer-lasting shingles expected to last several decades. Along with a longer life expectancy,...
Read More