Your Business does not have to come to a halt when you replace or repair a damaged roof. We will work with and meet the needs of Property Owners, Property Managers, Landlords and their tenants by creating a well organized disruptive free course for your needs. Call Atlas Building Services today for a free Estimate 416 826-3729. Roofing by Atlas Building Services. Roofing Specialists Toronto, Etobicoke, Mississauga, GTA.