BTC Group is a full-service Building Science Engineering firm, managing projects across Canada and internationally.Our personnel, based throughout Ontario and Canada, are qualified and experienced with in-house document production, CAD and plotting tools, and a wide array of investigative and monitoring equipment. The BTC Group can apply practical and cost-saving approaches to the design and construction of all types of roofing, waterproofing and building envelope projects. BTC Group Inc. has unparalleled experience in: Unbiased Design Roof And Building Envelope Repair Planning Quality Assurance Legal Testimony Roof Management Services Sustainable Roofing Reserve Fund Studies and Performance Audits Bulletin 19 reviews