It’s extremely durable. If you have your metal roof installed well and take care of it, it should last as long as the house and will easily survive wind storms, snow and rain water. Metal is also resistant to mildew, fire, insect infestation and rot.
Most metal roofs are noncombustible so they are rated with a Class A fire rating, which is the most resistant. However, if the metal roofing is installed over wood shingles, it will likely have a lower fire rating. Warranties will vary, but many companies will guarantee their metal roofing product to last between 20 to 50 years and paint finishes will often have a 30-year limited warranty.
