If you’re planning a residential roof replacement in NY, it’s important to know how many roofing layers are legally allowed. In most parts of New York, building codes permit up to two layers of asphalt shingles. Adding a third layer may violate code and compromise your roof’s safety. During a residential roof replacement, many homeowners choose to remove existing layers to inspect for... https://www.dssroofing.com/residential-roofing-services/residential-roof-replacements/