Noticed your roof shingles starting to curl, lift, or warp at the edges? You’re not alone. Curling shingles are one of the most common signs of roof aging or improper installation, and if left unaddressed, they can lead to serious issues—like leaks, insulation problems, and even full roof failure.

In this guide, we’ll explain what curling shingles are, what causes them, how to fix them, and most importantly—how to prevent them.

What is a curling shingle?

A curling shingle is a roofing tile that has begun to bend upward or downward, either at the corners or along the edges. This curling can break the waterproof seal between shingles, exposing your roof to moisture and damage.

Curling usually starts gradually and may go unnoticed until water stains, drafts, or visible roof damage appear.

Why are your tiles warping? 5 common reasons

1. Poor ventilation

Improper attic ventilation causes heat and moisture to build up under the roof deck, prematurely aging your shingles and causing them to curl.

2. Multi-layered roofs

Installing new shingles over old ones (a "roof overlay") traps heat and moisture, which can accelerate curling in both layers.

3. Improper installation

Shingles not nailed properly or aligned with manufacturer specifications are more likely to lift or curl over time.

4. Misalignment

If shingles are misaligned or overlapping incorrectly, water can seep under them, causing warping and decay.

5. Wear & tear

Shingles naturally degrade over time due to UV exposure, weather changes, and age. Curling is often a sign it’s time for replacement.

What are the effects of curling shingles?

While a few curled edges may seem cosmetic, the consequences can escalate quickly:

• Water infiltration and roof leaks

• Loss of insulation and higher energy bills

• Wind uplift and shingle blow-off during storms

• Shortened roof lifespan

• Decreased curb appeal and home value

How to fix curled shingles?

Step 1: Inspect the area

Look for curled, cracked, or missing shingles. Determine if the problem is localized or widespread.

Step 2: Lift and reseal

If only the corners are curling, apply roofing adhesive underneath and press down firmly. Use a brick or weighted object to hold it in place until it seals.

Step 3: Replace damaged shingles

If curling is severe or the shingle is cracked, it’s best to remove and replace it entirely.

Step 4: Check flashing and underlayment

Make sure nearby flashing and underlayment are intact to prevent future water entry.

Step 5: Seal and secure

Once repaired, apply a roofing sealant along edges to ensure a watertight bond.

Note: For widespread curling, a full roof replacement may be more cost-effective and safer.

Preventive measures to avoid future shingle curling

• Ensure proper attic ventilation with balanced intake and exhaust

• Avoid roof overlays—opt for full tear-offs when replacing a roof

• Use quality materials with proper installation by certified roofers

• Schedule annual roof inspections to catch early signs of damage

• Keep gutters clear to reduce moisture buildup at roof edges

Roof inspection can help

Early detection is key. At Masterpiece Roofing, we offer comprehensive roof inspections that identify shingle curling, water damage, poor ventilation, and other issues—before they turn into expensive repairs.

Looking for roof inspection near me? Contact Masterpiece Roofing

Our expert team serves homeowners across New England with detailed inspections, transparent reporting, and solutions tailored to your roof's condition. Whether it’s a minor fix or time for a new roof, we ensure the job is done right.

Book your professional roof inspection today with Masterpiece Roofing, your trusted local roofing experts.