how to clean skylight windows from outside

Daniel Parker

2 min read

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29-01-2025

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Skylights bring natural light and a feeling of openness to your home. But cleaning them, especially those on a high roof, can feel daunting. This guide shows you safe and effective ways to clean skylight windows from the outside, maximizing your view and preserving their shine.

Assessing Your Skylight and Preparing for the Clean

Before you start, assess your skylight's location and condition. Consider:

• Height and Accessibility: How high is your skylight? Can you reach it safely from a ladder, or will you need scaffolding? Safety is paramount. Never attempt to clean a skylight if you feel unsafe.
• Skylight Material: Knowing if your skylight is made of glass, polycarbonate, or another material will determine the appropriate cleaning solution.
• Frame Material: The frame material (wood, metal, vinyl) also influences your cleaning choices. Some materials are more sensitive to certain chemicals.
• Weather Conditions: Avoid cleaning on windy days or when rain is imminent. Sunlight can also make cleaning more difficult.

Gather Your Supplies:

• Ladder or scaffolding: Choose equipment appropriate for the height and your comfort level. Ensure it's stable and secure. Have a spotter if possible.
• Bucket: Large enough to hold your cleaning solution.
• Cleaning solution: For glass skylights, a mixture of warm water and mild dish soap is usually sufficient. For other materials, consult the manufacturer's instructions. Avoid abrasive cleaners.
• Squeegee: A long-handled squeegee makes reaching high areas easier.
• Microfiber cloths: For wiping and drying.
• Soft-bristled brush: To loosen stubborn dirt.
• Safety harness: If working at a significant height, a safety harness is crucial.

Step-by-Step Cleaning Process

1. Preparation is Key:

Clear the area around the skylight of any debris or obstacles. If using a ladder, place it on a stable, level surface. Always have a spotter.

2. Pre-Clean:

Use a soft-bristled brush to gently sweep away loose dirt, leaves, and debris. This prevents scratching the skylight during the cleaning process.

3. Apply Cleaning Solution:

Mix your cleaning solution (water and mild dish soap). Use a sponge or cloth to apply it evenly to the skylight surface. Don't soak it; a light mist is sufficient.

4. Scrubbing (If Necessary):

For tougher stains, use a soft-bristled brush or a non-abrasive sponge to gently scrub the surface. Avoid excessive scrubbing, as it could scratch the glass.

5. Squeegee Time:

Start at the top of the skylight and work your way down, overlapping each squeegee stroke slightly. This prevents streaking. Rinse the squeegee blade frequently to keep it clean.

6. Final Wipe:

Use a microfiber cloth to wipe any remaining streaks or residue.

7. Inspect Your Work:

Step back and admire your sparkling clean skylight! Check for any missed spots or streaks before descending your ladder.

Cleaning Different Skylight Materials

While the basic steps are similar, different materials require different approaches:

Glass Skylights: These are generally the easiest to clean. The water and mild soap solution usually works perfectly.

Polycarbonate Skylights: Polycarbonate is more prone to scratching than glass. Use a softer brush and gentler cleaning solution.

Acrylic Skylights: Similar to polycarbonate, use a soft cloth and gentle solution.

Safety First!

• Never overreach.
• Always have a spotter.
• Use appropriate safety equipment.
• Check the weather conditions before you start.
• If you are uncomfortable cleaning your skylights yourself, hire a professional window cleaning service.

By following these steps and prioritizing safety, you can keep your skylights sparkling clean and enjoy the beauty of natural light for years to come. Remember, regular cleaning (at least once or twice a year) will prevent dirt buildup and make future cleanings easier.