September 7, 2026
How to Inspect a Roofer’s Previous Work in North Dallas
To properly inspect a roofer's previous work, you should visit a completed local project to check for straight shingle lines, consistent overhang at the drip edge, and neat flashing around chimneys, while also verifying the contractor's documentation of hidden components like synthetic underlayment and ice and water shield. Reviewing a gallery of photos is a start, but physical inspections and talking to past clients provide the most reliable evidence of quality.
Key Takeaways
- Look for Symmetry: Straight shingle courses and even starter strips are signs of a disciplined crew.
- Verify Hidden Layers: Ask to see photos of the decking and underlayment before the shingles were installed.
- Focus on Transitions: The quality of a roof is determined by how well the contractor seals penetrations and valleys.
- Check the Perimeter: Drip edge installation and gutter clearance reveal how much the roofer cares about long-term water management.
Why Inspecting Past Projects is Essential
Homeowners in North Texas often feel pressured to make quick decisions after a spring hailstorm. However, the best way to ensure your investment is protected is by looking at what a contractor has already done. A roofer can say anything during a sales pitch, but their finished work in neighborhoods like Farmersville or McKinney tells the real story.
Flying Cow Roofing recommends that seeing a roof that has survived two or three Texas summers provides more insight than a brand-new installation. Heat and wind are the ultimate tests for asphalt shingles. By visiting a site that is a year or two old, you can see if the shingles are lifting or if the color is fading unevenly.
If you are ready to see what a professional installation looks like on your own home, you can schedule a free roof inspection with our team to get a detailed baseline of your current roof's condition.
Identifying High-Quality Installation Details
When you arrive at a property to view a contractor's work, start with the visual alignment of the shingles. In North Texas, high winds are common, and shingles that are not laid perfectly straight are more susceptible to wind uplift. Look at the "courses" or horizontal rows of shingles to ensure they do not wavy or dip.
Checking the Shingle Overhang
The shingles should extend past the drip edge by about half an inch to three-quarters of an inch. If they are too short, water will run behind the gutter and rot the fascia board. If they are too long, they may crack or blow off during a storm.
Inspecting the Drip Edge
The drip edge is a metal flashing installed along the edges of the roof. It should be tucked neatly under the shingles and over the fascia. Check for consistent color and secure fastening. Gaps in the drip edge are a common entry point for pests and moisture.
Installation Quality Checklist
- Uniformity: Do the shingle patterns look consistent across the entire slope?
- Alignment: Are the vertical joints staggered correctly to prevent water channels?
- Cleanliness: Is the property free of stray nails, shingle scraps, and old felt?
- Nailing: Are there any "high nails" visible or shingles that appear to be sliding?
Evaluating Flashing and Penetrations
The most common areas for leaks are not the shingles themselves, but where the roof meets a wall, chimney, or pipe. These areas require specialized metalwork known as flashing. In the North Dallas area, heavy rain can overwhelm poorly flashed areas in minutes.
| Feature | What to Look For | Red Flag |
|---|---|---|
| Chimney Flashing | Multi-layered step flashing and counter-flashing | Heavy use of caulk or roof cement |
| Pipe Boots | Snug fit around the PVC or lead pipe | Cracked rubber or loose collars |
| Valley Liners | Clean metal or woven shingles | Exposed nails in the center of the valley |
| Wall Returns | Flashing tucked behind siding or masonry | Metal just nailed to the outside |
The Importance of Step Flashing
Every time a roof slope meets a vertical wall, the roofer should use step flashing.
- This involves individual pieces of metal bent at a 90-degree angle and woven between every shingle.
- Some contractors try to save time by using one long piece of metal, but this is a major failure point.
- Flying Cow Roofing recommends that homeowners specifically ask for photos of the step flashing before the siding or counter-flashing is finalized.
Asking for Documentation of Hidden Work
A roof is a system, and the most important parts are often invisible once the shingles are nailed down. A reputable contractor will document the "dried-in" phase of the project. This refers to the period after the old shingles are removed and the new underlayment is installed.
Decking Inspection Records
Before the new roof goes on, the wood decking must be inspected. According to International Code Council building standards, any rotted or damaged wood must be replaced to provide a nailable surface. Ask the roofer for photos of your deck once the old materials were stripped. If they cannot produce photos of the bare wood, they may have "covered up" rot.
Underlayment Quality
Modern roofing systems utilize synthetic underlayment rather than old-fashioned organic felt. Synthetic materials are much more tear-resistant and provide a better secondary water barrier. When reviewing a roofer's previous work, ask what brand of underlayment they used and if they have photos showing it flat and wrinkle-free.
Critical Hidden Components
-
Ice and Water Shield: In North Texas, this should be installed in valleys and around penetrations, even if not strictly required by every local municipality.
-
Starter Shingles: These are specific shingles installed at the eaves to prevent the first row from blowing off.
-
Ridge Ventilation: Look at the top of the roof. There should be a continuous vent or individual pods that allow heat to escape the attic.
-
Nail Patterns: While you can't see them later, asking for a photo of the nailing pattern ensures the crew followed manufacturer specs (usually 4 to 6 nails per shingle).
Assessing the Perimeter and Gutters
A roofer's work extends to how they handle the edges of your home. If a contractor replaces a roof but damages the gutters or leaves the eaves looking messy, it reflects poor craftsmanship. Many North Dallas homes have complex gutter systems that must be carefully handled during a tear-off.
If your gutters were damaged during a previous installation or simply need an upgrade to handle Texas downpours, you might consider professional gutter installation to complement your new roof.
Gutter Clearance and Protection
Check if the shingles are interfering with the flow of water into the gutters. There should be a clear path for debris to wash through. Furthermore, look for "kick-out flashing" at the end of wall-to-roof transitions. This small piece of metal directs water away from the siding and into the gutter, preventing wall rot.
Fascia and Soffit Integrity
Look closely at the wood just below the roofline. Is it freshly painted, or are there water stains? A quality roofing job includes identifying and reporting fascia damage before the new drip edge is installed. If the roofer ignored rotting wood at the perimeter, the new roof is essentially built on a failing foundation.
Comparing Material Performance
Not all shingles are created equal, especially in the volatile North Texas climate. When inspecting a roofer's previous work, find out which manufacturers they prefer. At Flying Cow Roofing, we often recommend premium materials like Malarkey Vista or CertainTeed Belmont because of their superior impact resistance and wind ratings.
| Material Type | Wind Resistance | Hail Rating | Expected Lifespan in TX |
|---|---|---|---|
| Standard Architectural | 110 - 130 mph | Class 1 or 2 | 15 - 20 Years |
| Performance Shingles | 130+ mph | Class 3 or 4 | 20 - 25 Years |
| Stone Coated Steel | 140+ mph | Class 4 | 40 - 50 Years |
Why Impact Resistance Matters
The Insurance Institute for Business & Home Safety conducts extensive testing on how shingles handle hail. In North Dallas, a Class 4 impact-resistant shingle can often lead to insurance premium discounts. When you look at a roofer's past work, ask if they discussed these options with the homeowner. A contractor who only sells the cheapest option might not be looking out for your long-term costs.
Evaluating Post-Job Professionalism
The final inspection of a roofer's work happens on the ground. A professional crew treats your property with respect. If you visit a house where a roofer recently finished, look at the landscaping and the driveway.
Debris Management
Roofing generates thousands of pounds of waste. A high-quality contractor uses protective measures like "Catch-All" systems or heavy-duty tarps to protect bushes and flowers. They also use magnetic sweeps to pick up stray nails. If you find nails in the flower beds of a past client's home, it is a sign of a rushed cleanup.
Communication and Documentation
Verify that the contractor provided a final packet to the homeowner. This should include the manufacturer's warranty registration and a written workmanship warranty. Per the Texas Department of Insurance, homeowners should always keep a copy of their contract and all invoices related to roof repairs for their records.
For more information on how to navigate the aftermath of a storm, you can read our guide on what to do after a hail storm.
Frequently Asked Questions
Can I ask a roofer for the addresses of their past jobs?
Yes, a reputable roofer should be able to provide a list of local addresses where they have completed work recently. You don't need to knock on the door; simply driving by to see the curb appeal and the neatness of the installation can tell you a lot about their standards.
How do I know if they replaced the flashing or just painted it?
New flashing will usually have a clean, unblemished appearance and will be a consistent color. If the flashing looks dented, rusted, or has layers of old sealant around the edges, it likely wasn't replaced. Freshly painted old flashing is a common shortcut you should watch for.
What is the most important thing to look for in a valley?
In North Texas, "open" valleys with metal liners are often preferred for shedding large amounts of water and debris. If the valley is "closed" (shingles woven together), ensure there are no nails within 6 inches of the center line, as these are primary leak points.
Why does the brand of shingle matter if the labor is good?
Even the best crew cannot fix a low-quality product. Using brands like Malarkey or CertainTeed ensures that the shingles have the necessary polymer-modified asphalt to withstand the thermal expansion and contraction caused by the North Texas sun.
Should the roofer provide photos of the installation process?
Absolutely. A professional contractor should document the tear-off, the decking condition, the underlayment, and the final product. This "photo trail" is your best defense if you ever need to file a warranty claim with the manufacturer.
What if I see "shadow lines" on the roof?
Shadow lines are often intentional in architectural shingles to provide depth. However, if you see actual shadows caused by shingles that are buckling or not laying flat, this indicates a ventilation issue or poor fastening that needs to be addressed immediately.
If you have concerns about your roof or want to see examples of our recent projects in the North Dallas area, contact us today to speak with a roofing professional.