How Often Should A Slate Roof Be Replaced

Cracked broken loose or missing slates should be replaced as soon as possible by a roofer experienced in slate work.

How often should a slate roof be replaced.

28 january 2009 at 7 26pm. Slate roofs like all roofs should be inspected annually. Replacement on the other hand needs to take place at some point in the life of all slate roofs particularly those on older historical houses. After 45 75 years slate roofing is rarely subject to an entire roof replacement.

Replacing a slate roof. Roofer i do some work with says as a guide usually 50 of the origional slate can be reused and the rest would need to be new. The rule of thumb among slaters is to push for replacement once 20 30 of the slate has deteriorated beyond reasonable repair. However as with all building materials they will eventually begin to degrade.

Because slate is often called a 100 year roof homeowners sometimes assume that it doesn t need maintenance for a century. This is not the case. The suburban skyline roof. Slate is a timeless roofing choice and many older buildings have retained their original slate roofs as they are generally quite hardy and long lasting.

This means that you will be replacing this roof 2 4 times over the same 40 60 year period. If more than 10 percent of the total surface of the roof is damaged a. Dont know if that helps any but im sure a roofer will be along shortly. Installed properly slate roofs require relatively little maintenance and will last 60 to 125 years or longer depending on the type of slate employed roof configuration and the geographical location of the property.

Two major signs of imminent roofing replacement are powdering on the underside and major delamination or flaking. For instance a typical asphalt shingle roof lasts 20 to 25 years while a roof installed over an existing layer of shingles should be replaced after 20 years. Consequently you will end up spending at least double the amount and probably more than it would have cost you to initially install a metal roof. If damaged tiles are found all over the roof the tiles are probably too old to salvage and it s time to replace the roof.

The type of slate the quality of the slate roof pitch and weather conditions are some factors that can affect how long a slate roof will last. Some slates have been known to last over 200 years. An annual inspection is prudent as repairing small defects such as broken tiles or loose fastenings will ensure a long lasting roof. A slate roof can generally last at least 80 to 100 years with many lasting much more than that.