How come so many home improvement companies steal from their clients? The simple reason for this is that they see an industry that is not monitored well by local authorities and try to exploit it. Many homeowners know nothing about home improvement and simply trust any nonsense that the company feeds them. This is why every other day we hear about terrible scams. Royal Roofing & Siding Long Island 70 Sunrise Highway #500 Valley Stream, New York 11581 (516) 252-3001.