I’m building my third shed in five years. On the first two I put “Timberline Natural Shadow” light brown shingles which then came with a 30year warranty. I got the same for this third shed, so that all the roofs would match and noticed that the same type (Timberline Natural Shadow) now carries a lifetime warranty. But they look the same to me. Was anything really changed? Which really raises the next more important question: Are these shingles really expected to last a lifetime as the warranty implies? Or is this just a lifetime commitment to replace them, if you are still the original owner, if you remember that there was a warranty, if the company is still around, etc., in other words the company expects that few will exercise the warranty so they just pretend the shingles will really last a lifetime and then deal with the minor costs of replacing the shingles for the few who end up calling on the warranty? This is not that much of an issue for the sheds, as they are easy to reroof. But I’m also planning to reroof my house soon. Being not that young anymore, I’d rather this be my last reroof (by choosing a good shingle, not by kicking the bucket early).

Hello everyone The roof is flat. It's the 3 foot wide asphalt rolled stuff, I think there was a kettle around when it was installed, but not sure. Anyway, have about 3 leaks, looks like about 10 - 15 percent of the roof is worn out and thin at these spots, most of the mineral on top is gone. If I blow all the dust etc off in these areas, apply an asphalt roof coating and then some mineral aggregate, ( and do a good job ) will that type repair last a few years or a few months? This roof is about 20 years old, but only gets a half day of sunshine, so it's actually in good shape for it's age. I'm in famously hot South Carolina. Many thanks !