A skylight is a beautiful way to brighten your home with natural light. But when it starts leaking, that same source of sunshine can quickly turn into a source of stress and water damage. A timely skylight leak repair isn’t just about stopping the drip—it’s about protecting your home’s structure, insulation, and interior finishes from costly long-term damage.
Don’t wait for a small leak to turn into a major issue. Here’s what you need to know about spotting, diagnosing, fixing, and preventing skylight leaks.
How to Spot a Leaking Skylight
Not all skylight leaks are obvious. Water often travels along rafters or ceiling joists before showing visible signs indoors. Watch for these common warning signs:
- Visible Water Drips: The clearest sign of a problem—especially if dripping occurs during or after rainfall.
- Water Stains or Discoloration: Brown or yellow stains on your ceiling or drywall near the skylight often indicate long-term moisture infiltration.
- Peeling or Bubbling Paint: Paint lifting or bubbling near the skylight frame or ceiling is a strong sign of hidden leaks.
- Musty Odours: Persistent damp or mildew smells suggest water has entered wall or ceiling cavities.
- Visible Cracks or Gaps: Check the seals around the skylight glass and frame for deterioration or separation.
Common Causes of Skylight Leaks
Before you can fix a leak, you need to identify where it’s coming from. Surprisingly, not every “skylight leak” starts with the skylight itself—about half are caused by surrounding roofing components.
1. Condensation vs. Leak
Sometimes what looks like a leak is actually condensation. Warm, humid indoor air can condense on the cold glass of your skylight—especially in bathrooms or during Calgary’s cold winters.
If water only appears during temperature drops (not after rain), improving ventilation or clearing the skylight’s drainage (weep) holes may solve the issue.
2. Faulty Flashing
Flashing is the metal barrier that seals the joint between your skylight and roof. When it’s installed improperly, rusted, or pulled away due to temperature shifts, it can allow water to seep in, leading to skylight leak repairs. Flashing problems are among the top causes of leaks and often require professional repair.
3. Deteriorated Seals or Gaskets
Over time, UV rays and temperature extremes break down the rubber gaskets and sealants around the skylight. Cracked or shrinking seals let water bypass the skylight frame and enter your home.
4. Cracked Skylight Glass
Hail, debris, or even thermal stress can cause cracks in the skylight pane. Small cracks can expand with each freeze-thaw cycle—something Calgary homeowners know all too well—leading to leaks and potential safety hazards.
Skylight Leak Repair in Calgary: Options & Costs
Once you’ve confirmed a leak, whether it’s severe or minor, calling a professional for your skylight leak repair is the best—and safest—option. In regions like Calgary, where extreme weather and freeze-thaw cycles are common, professional expertise ensures long-lasting repairs.
Typical Costs for Skylight Leak Repair in Calgary
- Flashing repairs or replacement: $500–$1,500
- Complete skylight replacement: $1,500–$3,500+ (including labor and materials)
A professional roofer will also assess your entire roof-to-skylight system to ensure no underlying issues are left unaddressed.
How to Prevent Skylight Leaks
The best repair is prevention. Regular maintenance and inspections help extend your skylight’s lifespan and reduce the risk of leaks.
- Inspect Twice/Year: Check seals, flashing, and shingles around your skylight every spring and fall.
- Keep it Clean: Remove leaves, debris, and snow buildup around the skylight to allow proper water drainage.
- Maintain Ventilation: Proper attic airflow reduces condensation.
Need Skylight Leak Repair in Calgary? Call Your Trusted Local Experts
If you’re dealing with a leaking skylight or want to prevent future issues, A. Clark Roofing & Siding can help. With over 70 years of experience, our team provides expert skylight leak repair in Calgary—from seal and flashing replacements to full skylight upgrades built to handle Alberta’s demanding weather.
We use high-quality, leak-resistant products and proven installation techniques to ensure your skylight performs beautifully and stays watertight for years to come. To learn more about skylight leak repair in Calgary, contact A. Clark Roofing & Siding.
