2. Customers rave about the window cleaning services provided by Entretien McGill Inc. They appreciate the company's expertise in handling vertical challenges and dangerous operations above ground, ensuring sparkling clean windows that make any business image shine. With reliable and fast services, high safety standards, and highly skilled professionals, Entretien McGill Inc consistently exceeds customers' expectations. 6. Unique facts about Entretien McGill Inc include their establishment in 1975, their specialization in high-rise window cleaning, and their commitment to meeting clients' requirements with energy and efficiency. 7. Entretien McGill Inc specializes in high-rise window cleaning, offering exceptional services that ensure businesses' images sparkle with cleanliness. With a focus on vertical challenges and dangerous operations above ground, the company's skilled professionals deliver reliable and fast results that exceed expectations. Their high standards and commitment to safety make them a top choice for window cleaning services in Montreal.