The only unique company in Illinois with more than 20 years experience, specializing in leak repairs. Master Leak Repair is recommend by both commercial and residential property owners in Illinois and has an A+ rating with Chicago BBB. MLR uses infrared technology to find and track leaks coming from any type of roofs, sidings, windows, skylights, gutters, chimneys, windows and doors. Often roofing, siding and window companies fail to find and repair leaks that are not in their areas of expertise. Many of these leaks are a result of poor insulation, improper flashing & seal installation from various contractor companies which creates this water infiltration, ice damming or condensation that can lead to mold, mildew and rot. These circumstances can slowly damage homes and businesses structural and create a hazardous environment for tenants. We offer photo documentation from start to finish of each repair job that our clients obtain for their records.