#1 Rated Window Cleaning Service

Streak-free Window Cleaning From Madison to Milwaukee

Quality Window Cleaning

The young men who came to wash my windows were professional, efficient, polite and kind. My windows sparkle! I cannot say enough good things about this company and the two young men who came to my house and did the work! DeMark's can be proud of the people they employ. I will definitely use the company again!

Catherine T.
Demarks professional cleaning windows on brick house with beige siding

Bring Your Reflection Back With Clean Windows

Enhance The Curb Appeal of Your Home

Clean windows are a reflection of your home and once dust hits them, the beauty of their appearance fades. The surface of your window glass is porous and filled with peaks and valleys. They easily capture and trap airborne debris diminishing their quality and can lead to decreased R‑Value, or the measure of resistance to heat gain or loss of thermal pane windows. This is why hiring our professionals at DeMark’s Window & Pressure Cleaning will help with making sure the quality of your windows is maintained.

The sparkle in your windows will return with our special cleaning process. We will clean the interior and exterior of your windows along with cleaning the window screens as well. The Screen Washer thoroughly cleans the entire screen and frame, using a unique brushing system that scrubs both sides of the screen at the same time. To begin the window cleaning process, our DeMark’s cleaning professional will:


What Our Clients Say About Us


With over 200+ 5 Star Google reviews.

Quality. Value. Peace of Mind.

See Clearly With Clean Windows

Streak-free Shine To Enhance Your View

You will not only see your reflection come back in clean windows but also the beauty that lies beyond it.

Clean windows almost look like zero windows – that’s how clear the view is! Clarity you forgot was possible is instantly noticeable once you’ve had a professional window cleaning service. The dust on your windows will be eliminated and the worry of dirty windows will be gone. Our years of experience washing windows will allow us to tackle those hard-to-reach windows, and most importantly leave them streak-free. 

Window Cleaning

Satisfaction Guaranteed

We guarantee satisfaction with our hard work and professionalism.

Hassle-free customer service

Our customer service representatives are here for you.

Professional and Friendly Staff

We strive to be professional and friendly with the best service.

What Makes DeMark's Different?

You will receive experience and knowledge when you choose to have your exterior areas cleaned. We take pride in providing knowledge about our process with our work.

Professionalism and friendliness are what drives us to be the best. We work hard to show our customers we care about their home and their time.

We use advanced technology cleaning equipment and products for the best results when cleaning your exterior areas. 

Your home will be cleaned with the best cleaning products in the market and will shine with beauty after our professional cleaning process.

Demarks cleaning professionals cleaning windows on brick house with brown siding
Demarks cleaning professional cleaning window on beige house

Get Rid of the Dirt In Your Windows

Don't Leave Your Windows Dirty

Do your windows have dirt on them? Unclean windows say a lot about the love and care of your home. If your windows have been left dirty for a long period of time, it is a matter of time before the pests and other dust particles begin to affect the rest of your home. Besides becoming a nesting area for insects, your home will lose structural beauty because of dirty windows. 

Our professional window cleaners at DeMark’s can bring your windows back to life, but if they are left unclean the integrity of your home will be faced with:


Professional. Affordable. Reliable.

Make Your Neighbor Jealous Because Your Home Looks So Good

You Will Have Guaranteed Satisfaction

Guaranteed Satisfaction With Demark's Window Cleaning Process

Our cleaning professionals will leave you in awe with high satisfaction in our professional cleaning process.

The glow of beauty will return once our DeMark’s professionals clean your windows. Your home will feel brand new and the look of your home will be refreshing. DeMark’s Window & Pressure Cleaning knows your windows are a reflection of your home, which is why we guarantee professional results every time. 

DeMark’s Window & Pressure Cleaning will give you satisfaction and help with welcoming elegance back to your home after providing superior cleaning to the interior and exterior areas of your windows. If you need to get the sparkle back in your windows, call our DeMark’s professionals today. 

Demarks cleaning professional cleaning windows on brown home

Our Service Areas

Get Ready For Amazing Results

Waukesha County

Washington County

Ozaukee County

Milwaukee County


What's Next?



One quick call to our world-class customer service team will answer your questions and help you solve your problems.



With scheduling made easy, you’ll be able to pick a time that works for you. Your time is valuable. We get it!



Sit back and relax knowing that experts will be doing the work and you won't have to lift a finger.