How To Fix Skylight Leaks

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What Causes a Skylight to Leak?

A skylight can cause a roof leak due to improper installation, aging materials, or external damage. Common installation mistakes include improper sealing of the flashing, failure to use high-quality waterproof membranes, and incorrect slope or positioning. Common material issues include low-quality flashing that corrodes over time and sealants that dry out or crack. In Denver, where temperature fluctuations and heavy snowfall can put additional stress on roofing materials, skylights are particularly vulnerable to leaks over time.

How to Identify a Skylight Leak

To determine if your skylight is leaking, check for water stains, peeling paint, or mold growth around the skylight or ceiling. Sometimes, condensation can mimic a leak, so make sure the issue isn’t excessive indoor humidity before taking action. If you notice dripping during rain or melting snow, chances are the skylight seal, flashing, or surrounding roof area has been compromised.

Can You Fix a Skylight Leak Yourself?

Fixing a skylight leak yourself depends on the severity of the issue. Minor issues like resealing gaps with caulk can be a DIY project, but larger problems, such as damaged flashing or structural issues, require professional attention.

When a DIY Fix Is Possible

You can attempt a DIY repair if the leak is due to minor cracks in the sealant, debris buildup, or clogged weep holes. Reapplying high-quality exterior caulk around the skylight frame can often resolve small leaks.

When to Call a Professional Roofer

If the leak persists after resealing or if you suspect flashing or roof damage, it’s best to call a professional roofer like Maxx Roof LLC. Signs of flashing damage include rust, gaps, or improper alignment around the skylight. If the surrounding shingles are curling, missing, or appear water-damaged, this is another indicator that professional repairs are necessary. Improper repairs can lead to bigger problems, including interior water damage and mold growth.

Step-by-Step Guide to Fixing a Skylight Leak

Inspecting the Skylight and Roof Area

Start by inspecting the skylight from inside and outside. Check for cracks in the lens, damaged flashing, and missing or lifted shingles nearby. Remove debris like leaves or dirt that might be blocking drainage channels.

Resealing the Skylight with Caulk

If you identify small gaps in the sealant, clean the area thoroughly and apply a high-quality exterior-grade caulk. Use a waterproof silicone or polyurethane caulk designed for roofing applications to ensure durability against Denver’s seasonal weather extremes.

Replacing Flashing Around the Skylight

If the flashing is rusted, bent, or missing, you’ll need to replace it. Remove the old flashing, install a new waterproof underlayment, and secure fresh flashing around the skylight frame. This prevents water from seeping through gaps where the skylight meets the roof.

Checking and Fixing the Roof Shingles

If missing or damaged shingles around the skylight are contributing to leaks, replace them immediately. Use roofing nails and sealant to secure the new shingles properly, ensuring a tight barrier against moisture penetration.

Preventative Maintenance for Skylights

To prevent leaks, perform regular roof inspections, especially after storms or heavy snowfall. Clean skylight surfaces, remove debris from around the flashing, and check for signs of wear on seals and caulking. Applying a fresh layer of sealant every few years can also prolong the lifespan of your skylight.

When to Replace a Skylight Instead of Repairing It

If your skylight is over 15-20 years old, has extensive cracks, or frequently leaks despite repairs, replacing it might be the best option. Newer skylights come with better insulation and UV protection, improving energy efficiency and reducing condensation issues. Some popular energy-efficient skylight options include models with low-emissivity (Low-E) glass coatings, argon gas-filled panes, and solar-powered shades for added temperature control.

How Much Does It Cost to Fix a Skylight Leak?

The cost to fix a skylight leak varies depending on the severity of the issue. Resealing with caulk costs around $100-$300, while flashing replacement can range from $300-$800. If a full skylight replacement is necessary, expect to pay between $800-$2,500, depending on the size and type of skylight. For the most accurate pricing, it’s best to consult with a professional roofer and request a detailed estimate.

Why Choose Maxx Roof LLC for Skylight Repairs?

At Maxx Roof LLC, we specialize in professional skylight repair and replacement throughout the Denver area. Our expert team ensures watertight installations that withstand Colorado’s weather conditions. Whether you need minor repairs or a full skylight replacement, we offer high-quality materials, competitive pricing, and industry-leading warranties to protect your investment. Our past customers have praised our quick response times, expert craftsmanship, and friendly customer service. Contact us today for a free inspection and estimate!

We Service All Of Denver And Nearby Cities

Our service area covers Denver, CO and all nearby cities, so if your home or commercial property is located anywhere in the Denver region, give us a call today. If your property is located in the mountains or outside of our normal service area, we may be able to provide service still, so don’t hesitate to give us a call and discuss your roofing needs.

At Maxx Roof LLC, we provide skylight repair services across Denver, CO and the neighboring areas. Some of the nearby cities that we service are: 

  • Denver, CO
  • Lakewood, CO
  • Castle Rock, CO
  • Arvada, CO
  • Aurora, CO
  • Westminster, CO
  • Boulder, CO, Broomfield, CO
  • Littleton, CO
  • Englewood, CO
  • Centennial, CO
  • Parker, CO
  • Longmont, CO
  • Lafayette, CO
  • Superior, CO
  • Thornton, CO
  • Wheat Ridge, CO
  • Golden, CO
  • Morrison, CO
  • Brighton, CO
  • Commerce City, CO
  • Watkins, CO
  • Highlands Ranch, CO
  • Lone Tree, CO
  • Edgewater, CO
  • Gunbarrel, CO
  • Firestone, CO
  • Erie, CO
  • Strasburg, CO
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