Profile: Roofing Supply Group, LLC specializes in supplying roofing supplies and related materials. Lamarite® composite shingles offer the natural beauty of slate or shake. Being robust and enduring, the shingles are listed for UL class A fire resistance and UL Standard 2218, class 4 impact resistance. Lomanco® power ventilators are designed as exhaust vents, and require proper intake to create a balanced ventilation system. They feature aluminum construction, deep drawn flange & unique rain shield which keep water out, balanced fan blades for quiet operation, and 8x8 aluminum screen attached for insect protection.