Proudly serving Peterborough, Muskoka and the Kawartha Lakes areas for over 75 years, A.M Johnston Masonry (formerly known as R.L Johnston Masonry) is now in our fifth generation of expert masons. Specializing in residential and commercial stone and concrete masonry work, we’re dedicated to providing courteous customer service and superior quality workmanship that meet or exceed your expectations. Who better to clean and repair your chimney than the people who designed and built them?