Cornerstone Cleaning

This morning I had my exterior windows cleaned by Cornerstone Cleaning, and I am absolutely thrilled with the results! Right from the start, their professionalism was evident. They arrived on time and were clearly highly skilled in their trade. They worked efficiently and meticulously, paying attention to every pane and corner. The difference they made is astonishing. My windows are now crystal clear—in fact, they are so clean, it barely looks like there's glass there! What truly made the experience exceptional, however, was their attitude. Michael and Kevin are incredibly personable and friendly. Their smiles were as bright as they made my windows, adding a genuinely pleasant touch to their excellent service. If you are looking for exterior window cleaners who deliver impeccable results w

Great service and very professional group of guys. Went above and beyond and cleaned my very large, unreachable windows (birds fly into the windows pretty regularly) even though they were hear to clean our roof & gutters. I really appreciated that. We will definitely be using Conerstone again.

We have hired Cornerstone for roof and gutter cleaning at.two different properties in Kitsap County over the years. They do excellent work and use effective safety practices. I also like that our property has always been completely cleaned up when they’re finished. I did notice their prices have gone up substantially since the last time we used them. But I did not shop around because I trust this company to do a good job safely.

Very responsive! Quick to contact, arrange visit for estimate and follow-up with appointment to do the work. Came prepared to reach the high places (3 stories). Last rainstorm revealed an overflowing gutter, sought assistance from Cornerstone. Had used them 3 years previously for gutters as well. Work was thorough. Testing complete. And notified of a gutter to investigate (but functional). Overall satisfied with gutter and roof cleaning. I cannot comment on price as I did not seek comparisons.

My standing seam metal roof in Port Townsend, WA was covered in years of moss and lichen. After conferring with a roofing contractor, I called Cornerstone Cleaning to estimate the job. The estimated price was quite reasonable. The crew showed up on time on the scheduled day. Since safety on a 12/12 pitch slippery surface was paramount, the cleaners used harnesses and ropes belayed to workers on the ground. The roof is now sparkling clean. They used a special tool and cleaning solution on the solar panels, which are now as productive as when they were new. I will now use Cornerstone in the future on a regular basis. I highly recommend this professional company.