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Hollon+Cannon Group (HCG) is a roofing and building envelope consulting firm specializing in providing architects and building owners with professional and independent guidance on their exterior wall and roofing projects. As roofing and waterproofing consultants HCG provides a wide variety of services designed to help clients from the initial investigation through final construction and beyond. See the Professional Services tab at hollon-cannon.com for detailed description of available service...

Hollon+Cannon Group (HCG) is a roofing and building envelope consulting firm specializing in providing architects and building owners with professional and independent guidance on their exterior wall and roofing projects. As roofing and waterproofing consultants HCG provides a wide variety of services designed to help clients from the initial investigation through final construction and beyond. See the Professional Services tab at hollon-cannon.com for detailed description of available services.