How long do slate shingles last?
Slate is one of the most durable, long-lasting roofing options available. In fact, in some instances, the nails used to attach the shingles rust out long before the shingle goes bad. You can be sure they will easily last for thirty years, and with some routine maintenance, may last another 30 years. In some instances, slate shingles may last up to a hundred years.
Common problems with slate shingles
Slate shingles are heavy — after all, they are made from rock. This may require additional reinforcement of some of the roof framing on homes. Slate roofs are also not meant to be walked on — the slate tiles can easily break in half or shatter. This can make upkeep of gutters difficult, at best. Typically, slate is used on very steeply pitched roofs. It requires specialized installation (roofers that specialize in using slate), and frequent maintenance to check for problems.