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Skylight Cleaning in San Francisco
Skylights are one of those features that look great when they are clean and quietly awful when they are not. In San Francisco, the combination of coastal salt air, fog residue, bird activity, and general urban grime means skylights get dirty faster than most homeowners expect. And because they are overhead, on a roof or ceiling slope, most people either ignore them or assume cleaning them is too complicated to bother with.
- 40 years of experience
Locally owned and operated - Buildings up to four stories
Water-fed pole and deionized water - Written quote first
Before any work starts - Fully insured
Safety certified for mid-rise buildings
It is not complicated, but it does take the right equipment and approach. Dirty skylights block natural light, leave streaks that are visible from inside the room, and can hide early signs of seal failure or frame wear that are worth catching before they become a bigger problem.
If your skylight looks gray or hazy from the inside, that is usually surface grime on the exterior glass. A proper cleaning removes that layer and restores the amount of light the skylight was designed to let in. It is often more light than people remember the fixture providing, because the buildup happens gradually and most homeowners adjust to the dimmer result without realizing it.
Skylights face straight up, which means they catch everything that settles out of the air. In San Francisco, that includes salt particles from marine air, mineral residue from fog, bird droppings, leaves, and general particulate from urban traffic. None of that falls on your vertical windows the same way it accumulates on a horizontal or pitched glass surface. Skylights need attention on their own schedule, separate from your regular window cleaning.
What Is Included
- Exterior glass cleaned with professional-grade equipment and deionized water for a streak-free finish
- Interior glass cleaned where accessible
- Frame and surrounding area wiped down
- Visual check of the glass surface and frame condition noted for your awareness
- Careful setup to protect your roof surface and interior during the cleaning process
Our Process
Assessment
We look at the skylight type, pitch, access, and condition before starting. Flat skylights, pitched glass panels, and dome-style units each have slightly different requirements in terms of access and cleaning method. We look at all of that before we touch anything.
Safe roof access
We use appropriate safety equipment and work carefully on your roof surface. We do not rush this step. Getting access right protects both the roof and the people doing the work.
Exterior cleaning
We apply the right cleaning solution for the grime level, then rinse with deionized water. Deionized water leaves no mineral deposits, so the glass dries spot-free. This matters especially for skylights because you are looking up at the glass against the sky, which makes any residue or streaking very visible from inside.
Interior cleaning
Where we can safely access the interior panel, we clean that side as well using streak-free methods. Interior glass on skylights tends to collect condensation residue and dust, which dulls the finish even when the exterior is clean.
Frame wipe-down
Dirt and debris around the frame gets cleaned up so the whole unit looks finished. Frames on skylights collect leaves, organic material, and grime that can work into the seal area if left in place.
Walk-through
We show you the result and mention anything we noticed about the frame or seal condition that might be worth a closer look. We are not inspectors, but if something looks like it deserves attention, we will say so.
Signs You Need Skylight Cleaning
- The room feels darker than it used to even on bright days
- You can see a gray or brownish film on the glass from inside
- There are visible streaks, water spots, or bird droppings on the exterior
- The last time the skylight was cleaned is more than a year ago, or you genuinely cannot remember
- You noticed the grime during a recent window cleaning and the skylight was left out
- The glass looks clear from a distance but shows smearing or deposits when the light hits it at an angle
San Francisco's fog and salt air accelerate buildup on any exposed glass. Skylights face straight up, which means they catch everything that falls or settles out of the air. They need attention just like your windows do, and often on a more frequent schedule because of their orientation.
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What It Costs
Skylight cleaning is priced based on the number of skylights, their size, roof pitch, and how accessible they are from both inside and out. A single standard skylight on a straightforward residential roof will cost less than a set of large commercial skylights on a complex layout.
The condition of the glass also affects the time required. A skylight that gets cleaned regularly takes less work to restore to a clear finish than one that has accumulated several seasons of buildup. We look at both factors when we put together the quote.
We give you a written quote before any work starts. No surprises after the job is done.
Call us at (415) 975-1522 or reach out through the site to describe your setup and get a number.
Related Services
If you are having your skylights cleaned, it is often a good time to look at the rest of your glass. We offer professional window cleaning for residential properties throughout San Francisco, commercial window cleaning for offices and small commercial properties, and condo, apartment, and mid-rise window cleaning up to 4 stories. For a broader look at what we do, visit our specialty cleaning services page.
We work throughout San Francisco. If you want to confirm your neighborhood is covered, check the service areas page.
Frequently Asked Questions
Can you clean skylights on a steep roof?
Yes. We assess roof pitch and access before every job and use appropriate safety equipment. If a skylight is not safely reachable, we will tell you upfront rather than attempt something risky.
Do you clean both the inside and outside of the skylight?
We clean the exterior glass on every job. We also clean the interior panel where it is safely accessible. Some fixed skylights or very high interior ceilings limit interior access, and we will let you know before we start if that is the case for your setup.
How is skylight cleaning different from regular window cleaning?
The main difference is access. Skylights are on the roof and face upward, so they require safe roof access, different equipment angles, and attention to the surrounding roof surface. The cleaning methods for the glass itself are similar, including deionized water for a streak-free finish.
Will you notice if there is a problem with my skylight seal or frame?
We are not skylight installers or roofers, but we do visually note anything that looks unusual, such as cracked frames, gaps, or signs of moisture between panes, and we mention it to you after the job. What you do with that information is up to you.
How do I get a quote for skylight cleaning in San Francisco?
Call us at (415) 975-1522 or send us a message through the site. Let us know how many skylights you have, roughly what size they are, and what kind of roof access looks like. We will get you a written quote before any work begins.
Why Bay Area Clients Choose Us
- Locally owned and operated.
- Proudly serving San Francisco, Oakland, Marin County, San Mateo and cities in between
- Fully insured and safety certified for mid-rise buildings
- Using only state-of-the-art equipment
- Specialized service for condos, small offices and apartments
- Reliable scheduling and satisfaction guaranteed
Contact Us
Dan Mount Cleaning Services
San Francisco, California 94123, United States
Request a FREE Quote: (415) 975-1522 dan@danmountcleaningservices.com
Hours
Open today | 07:00 am – 05:00 pm |
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