Greg Martineau Projects (GMP) has all the certifications required by law to install windows, doors and siding in Calgary and the rest of Alberta. If you would like to contact the trade organizations that we belong to, we have provided more details and websites for the Calgary Home Builder Association, Calgary Residential Rental Association, Alberta Building Envelope Council, Canadian Condominium Association, and the Calgary Construction Association. GMP is also registered with the Better Business Bureau (BBB).