C-Thru Windows is a full-service, residential and commercial window-cleaning company. We also also offer a variety of other maintenance services, ranging from gutter-cleaning, to whole house power-washing to tree pruning.

Based in South Lyon, Michigan, we work in a 45-mile radius, including Oakland, Livingston and Washtenaw counties and parts of Wayne County. Owner Terry Bonkowski already had 15 years of experience in the window cleaning industry when he established C-Thru Windows in 2002.

We pride ourselves in providing quality, professional work, so you can have peace of mind that the job will be done right.

We are fully insured with million-dollar liability, protecting from damage or injury. We also carry workers compensation insurance, so our clients can rest easy, knowing we and they are protected.

We are proud members of the South Lyon Chamber of Commerce.

Our Mission Statement
Providing service to the public, with big business certitude,
and small business attitude, with fair prices, and exceptional quality.