Find a Roof Leak Like a Pro

by | Jun 18, 2025 | Emergency Roof Repair, Insurance Claim Roofs, Roof Repair

Roof Leak

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When you need a roof contractor you can rely on the team of experts at Ernie’s Roofing. We specialize in a wide range of services from new construction, maintenance, and repairs for your home or business.

How to Find a Roof Leak Like a Pro: Denver Homeowner’s Guide

When it Leaks, It Speaks. Here’s How to Listen.

Roof leaks are more than just annoying—they can silently cause thousands in water damage, mold growth, and structural rot. At Ernie’s Roofing, we’ve spent over four decades helping Denver homeowners find and fix leaks fast and right the first time.

Here’s a quick step-by-step overview based on time-tested inspection methods to help you find a roof leak and understand what signs to look for.

🔍 How to Find a Roof Leak — Key Inspection Tips

  • Start with a Visual Roof Scan
    Look for discolored shingles, moss, lichen, or debris buildup—especially on north-facing or shaded slopes.

  • Check for Raised or Buckled Decking
    Warped decking lines (usually in 4 ft. sections) can indicate loose nails or wood expansion from moisture.

  • Inspect Nail Placement Near Keyways
    Nails too close to shingle seams (keyways) can let in water during storms or freeze-thaw cycles.

  • Pipe Boots are Leak Prone
    Improperly installed or aged pipe boots are one of the most common leak sources on asphalt shingle roofs.

  • Avoid Ice & Water Shield Over the Flange
    If ice and water barrier isn’t bonded properly (especially in cold weather), it can trap water underneath and cause leaks.

  • Use Professional-Grade Sealants
    Skip cheap tar and go for sealants like GSL 4500 that work in all temperatures and conditions.

  • Watch for Scrapes or Cuts from Poor Craftsmanship
    Shingles damaged during installation—especially from improper blade cuts—can weaken the surface and cause seepage.

  • Beware of Lateral Water Movement
    Water may not always go straight down—it can follow surface tension around raised areas, nails, or improperly installed flashing.

  • Inspect Valleys Carefully
    Metal or California valleys often shed water better than traditional closed-cut valleys, which can trap water at sharp angles.

  • Look Under the Shingles if Needed
    If no damage is visible topside, gently lift shingles near the leak area to check for hidden nails or water trails underneath.

Roof Leak
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720 346 ROOF
1195 W Custer Pl , 80223

🧰 Bonus Tip from the Pros at Ernie’s Roofing

If you suspect a leak but can’t find visible signs on the roof, don’t ignore interior signs like ceiling stains, peeling paint, or musty odors. It may be time to access the attic and trace water paths from within.

🙋‍♂️ 10 Most Asked Questions About Roof Leaks

1. What’s the most common cause of a roof leak?

  • Pipe boots and flashing are the #1 culprits.

  • Improper nail placement and aging shingles also top the list.

  • Roofs 10–15 years old are especially vulnerable.

2. How can I tell if decking is lifting?

  • Look for straight or slightly wavy raised lines about 4 feet long.

  • These often indicate loose or missing nails underneath.

  • You might also feel “soft spots” when walking on the roof.

3. Should nails be visible between shingles?

  • No. If nails are visible in the keyway, that’s a sign of poor installation.

  • Nails should be covered and properly sealed to prevent water intrusion.

4. What’s wrong with using tar for sealing?

  • Tar dries out, cracks, and fails over time.

  • We recommend using high-quality roofing sealants that are flexible and weather-resistant.

5. Can water travel sideways under shingles?

  • Yes. Surface tension, gravity, and obstructions can cause water to run laterally.

  • This is why proper installation of flashing and underlayment is crucial.

6. Is moss or algae on the roof a problem?

  • Yes. It traps moisture and can accelerate wear on shingles.

  • It’s also a sign that your roof isn’t getting enough sun exposure.

7. Do valleys cause leaks?

  • If poorly constructed, yes. Closed-cut valleys can trap water at sharp cut angles.

  • California or metal valleys typically perform better over time.

8. What’s the lifespan of a typical Denver asphalt shingle roof?

  • About 15–20 years depending on maintenance, sun exposure, and ventilation.

  • Leaks often show up around year 10–15.

9. How do I check for leaks from inside the attic?

  • Look for wet insulation, dark wood stains, or visible drips after rain.

  • Use a flashlight and follow the trail uphill toward the roof decking.

10. Should I try to fix a leak myself?

  • Small leaks like a missing shingle may be DIY-friendly.

  • However, if flashing, pipe boots, or decking are involved, call a pro—like Ernie’s Roofing—to ensure it’s done right.

🛠️ Get Expert Leak Repair in Denver, CO

Don’t wait for a small leak to become a major problem. Whether you need a quick fix or full roof inspection, Ernie’s Roofing is here to help.

📍 Serving Denver and the Front Range Since 1978

  • Emergency Roof Repair

  • Leak Detection & Repair

  • Pipe Boot Replacement

  • Flashing & Valley Inspections

  • Seamless Gutter Systems

  • Free Estimates & Roof Evaluations

📞 Call Ernie’s Roofing Today: 720-346-ROOF
🌐 Visit Us Online: https://erniesroofing.com

OUR SERVICES

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Get more information concerning our service, do not wait to call us at 720 346 ROOF today. We’ll be more than happy to schedule a meeting with you.

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Residential Roofing Contractor

Ernie’s Roofing specialize in residential roofing in Denver and have a team of experienced professional Roofers available to help you get the job done right The First Time. From minor repairs and maintenance to full–scale roof replacements,

Commercial Roofing

We construct, repair, as well as maintain Commercial Roofing systems for services both large and also small, creating personalized services that conserve our client’s time, cash, and also power. Call us at 720 346 ROOF and book a consultation today.

Hail Damage

Their knowledgeable staff is ready to help you assess the damage caused by storms and provide you with a comprehensive repair evaluation & plan. We specialize in all types of roof damage, including hail, wind, and even lightning strikes. Hail Claim Help

INSURANCE CLAIMS HELP

Our team of experienced insurance claim specialists will work with you to ensure that the insurance claim process is as stress-free as possible. We will work with your insurance company to provide all necessary documentation and estimates to ensure that your claim is processed quickly and correctly.

Wind Damage

When it comes to roof damage, it can be difficult to determine whether the damage was caused by hail or wind. While both types of damage can cause similar symptoms, they have different causes and require different repair methods.

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