The answer to 'roof decking warranty' is that the warranty on roof decking, also known as roof sheathing, typically ranges from 25 to 50 years. Roof decking is the structural layer that supports the roof's shingles or other roofing materials. Most manufacturers offer a limited warranty on their roof decking products, covering defects in materials and workmanship for a specified number of years. The actual length of the warranty can vary depending on the brand and type of decking used.
It's important to note that the warranty on the roof decking is separate from the warranty on the roofing materials themselves, such as asphalt shingles or metal roofing. The roof decking warranty covers the structural integrity of the underlying support system, while the roofing material warranty covers the performance and weatherproofing of the outer layer.