Warning Signs That Indicate Poor Roofing Practices

Don’t Let Hidden Roofing Mistakes Jeopardize Your Home

When hiring a roofing contractor, it’s easy to assume the job will be done professionally. But for many homeowners in Santa Monica, CA, the reality is quite different. Poor roofing practices aren’t always obvious at first—but over time, they can lead to costly repairs, safety hazards, and even structural damage. That’s why it’s crucial to know the red flags that suggest something isn’t right. At Economy Roofing, we believe in educating homeowners so they can protect their investment and avoid the pitfalls of shoddy workmanship.

Improper Shingle Installation

Misalignment, Overhang, and Nail Placement

One of the most common errors made by careless roofers is poor shingle installation. Misaligned shingles, excessive overhang at the eaves, or improper nail placement can weaken the integrity of your entire roofing system. Nails driven too high or too shallow fail to secure shingles properly, leading to blow-offs during strong winds or storms.

Signs to Watch For:

• Uneven or crooked shingle lines

• Loose or flapping shingles after recent winds

• Visible nail heads or nail pops

Inadequate Ventilation

A Silent Threat to Your Roof’s Lifespan

Poor attic ventilation may not be visible right away, but it can destroy a roof from the inside out. Trapped heat and moisture accelerate material breakdown, promote mold growth, and cause ice dams during cold weather. This is one of the most overlooked areas by inexperienced contractors.

Proper airflow—supported by ridge vents, soffits, and intake systems—is essential for extending the life of your roof. Brands like Malarkey and Owens Corning emphasize proper ventilation as part of their warranty and performance guidelines.

Poor Flashing and Sealing Techniques

Where Most Leaks Begin

Flashing protects roof penetrations like chimneys, skylights, and vents. Sloppy flashing work, such as failing to embed flashing under the shingles or sealing it with only caulk, invites leaks and moisture damage. Quality flashing must be installed with precision and layered correctly with the roofing materials to ensure durability.

Look out for:

• Water stains near vents or chimneys

• Mold in the attic corners

• Caulking-only solutions (a temporary fix)

Lack of Underlayment or Moisture Barrier

Cutting Corners Beneath the Surface

Roof underlayment is a moisture-resistant barrier that provides backup protection if shingles fail. Unethical roofers may skip this step to save on materials or time. Without it, even minor roof penetrations can result in widespread water damage.

If your roofer doesn’t mention underlayment—or worse, tries to convince you it’s optional—it’s a clear sign of poor roofing practice.

No Written Contract or Warranty

Protecting Yourself Against Liability and Defects

Any roofing job should include a detailed contract outlining materials, labor, timeline, and warranty coverage. Contractors who avoid putting things in writing or offer suspiciously short warranties are typically those who cut corners and don’t stand behind their work.

Always ask about manufacturer-backed warranties, especially when working with certified providers of products from Malarkey, Owens Corning, or similar brands.

How to Avoid These Issues

The best way to avoid poor roofing practices is by choosing a reputable, licensed contractor who adheres to industry standards and takes pride in craftsmanship. In Santa Monica, CA, Economy Roofing is committed to honest communication, expert installation, and long-term performance.

Whether you’re getting a full roof replacement or minor repairs, make sure your roofer:

• Is certified by major brands

• Offers a written proposal and warranty

• Explains materials and installation steps

• Has local reviews and a proven track record

Read also our blog: Five Signs You May Need a Roof Replacement Soon