Trusted General Contractors in Mount Pleasant, SC

More often than not, it depends on the shingles. A shingle reaches a certain lifespan and a certain condition where it becomes impossible to take out the shingle without damaging the other shingles in the area. At this point, it generally is advised to just replace the roof.

Metal roofing panels do not deteriorate anywhere near as fast as shingles. Typically, metal roofing panels do not deteriorate for approximately 40 years; shingles, on the other hand, generally begin to deteriorate after 20 years. However, metal roofing panels will start to rust within 20-25 years, meaning that they will lose their curb appeal.

When it comes to metal roofing, there are multiple profiles that are designed for specific areas and roofs. The two common systems are a hidden fastener system and an exposed fastener system. The hidden systems are typically used in residential homes; the panels are smaller and more bendable to help increase curb appeal. These come in copper (which can last for up to 80 years!), aluminum, or galvanized steel. The exposed fastener system is used for commercial buildings, such as barns and industrial buildings; these have much larger panels, which require more maintenance and must be replaced every 15 years. However, these are cost-effective.

Both open cell and closed cell foam installation have been proven to not impact the lifespan of the shingles, or compromise them in any way. However, some adjustments to the utility vent would be required so the spray foam pressure does not close off the ventilation.