6 Ways to Maximize Skylight Lifespan Before You Need Replacement

Markelangelo's • September 22, 2026

A skylight brings natural light and a sense of openness to your Ottawa home. At Markelangelo’s, we often meet homeowners who are surprised when their skylight starts leaking or fogging up earlier than expected. Skylights are a real investment—and with the right maintenance, you can stretch their lifespan and avoid a hasty replacement.

Most skylights don’t fail because of poor products, but because regular upkeep gets overlooked. Keeping water out, stoppering leaks, and protecting the glass all matter. Our Ottawa clients rely on us to spot issues before they turn serious. Here are six tips you won’t find in the average how-to guide.

Tip #1: Clean With the Right Materials

A little effort goes a long way when keeping your skylight glass clear. Use a gentle, non-abrasive cleaner and a soft cloth—no scrubbing pads or harsh chemicals.

• Use a mild soap solution and rinse with clean water

• Avoid high-pressure washing or ammonia-based products

• Wipe both the inside and outside surfaces gently

Tip #2: Inspect Seals and Flashing Every Spring

Most leaks start where the skylight meets the roof deck, not with the glass itself. Spring is the best time to check for wear or cracks, especially after ice and snow have sat for months.

• Look closely for cracked, curling, or missing sealant

• Check that metal flashing isn’t bent, corroded, or lifting

• Run your hand around the interior frame to spot cold drafts

Tip #3: Watch for Warning Signs of Moisture

Early moisture signals are easy to miss but matter most for long-term survival. These aren’t just limited to drips on the floor.

• Watch for fogging or condensation between glazing layers

• Check drywall or paint near the skylight for bubbling or peeling

• Feel for cold, damp spots on the ceiling after rain

Tip #4: Clear Surrounding Roof Debris

Branches, leaves, and dirt build up around roof windows, especially during Ottawa’s windy autumns and after spring storms. Debris blocks proper drainage, making leaks more likely.

• Remove sticks and leaves from around the skylight frame

• Use a plastic scoop or gloved hand—never metal tools

• Check after every major weather event

Tip #5: Schedule Professional Inspections

General roofers may miss skylight-specific issues. Markelangelo’s inspects both the flashing and the roof area immediately around your window to prevent unexpected failures.

• Have a dedicated skylight check during yearly roof inspections

• Ask for a report on seal condition and any emerging wear

• Insist on professionals with Ottawa repair experience

Tip #6: Don’t Ignore Small Leaks or Stains

A little drip or minor stain should never be brushed off. Quick repairs save the entire unit and stop costly replacements.

• Pinpoint and patch minor leaks immediately

• Replace worn-out weather seals before water damages framing

• Monitor small changes—even a little condensation is a warning

Frequently Asked Questions

How do I maintain my skylight?

Routine cleaning, seasonal checks on flashing and seals, and prompt repair of any small leaks or stains will keep your skylight working reliably. Ottawa weather means extra caution in spring and fall is especially important.

What signs show it’s time to replace a skylight?

Persistent leaks, fogging between glass panes, visible cracks, or repeated failed repairs mean it’s time to consider replacement. If you spot water damage inside, act quickly to avoid bigger problems like mold or rot.

Can leaking skylights be repaired instead of replaced?

In many cases, yes. Sealing new flashing, reseating panes, or addressing moisture barriers can solve most issues—especially if caught early. Markelangelo’s always tries to repair before recommending a full replacement in Ottawa homes.

Keep Your Ottawa Skylight in Top Shape

With a few targeted habits, you can avoid early skylight failures and stretch your investment another decade or more. Markelangelo’s brings experience and a keen eye to every inspection in the Ottawa region. If you want honest advice or suspect a problem, get in touch—every small fix adds up to longer-lasting natural light in your space.

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