Roof Inspection Checklist for Homeowners

Step 1: Inspect the Roof Surface From the Ground

Walk around the entire perimeter of your home and examine every visible roof slope. Use binoculars for a closer look at surfaces that are far above ground level. You are looking for the following:

Missing shingles: Any gap in the shingle coverage where the underlayment or decking is exposed. Missing shingles require prompt professional repair because they allow water to reach the roof structure directly.

Curling or lifting shingles: Shingle edges that turn upward or tabs that have lifted away from the surface below. This indicates the shingle's seal strip has failed, making it vulnerable to wind damage and water infiltration.

Discoloration or dark streaks: Dark streaks across the roof are usually algae growth (Gloeocapsa magma), which is cosmetic rather than structural. However, widespread green or thick buildup indicates moss, which holds moisture against the shingles and accelerates deterioration.

Sagging areas: Any visible dip or sag in the roofline suggests structural problems with the decking or framing underneath. This is a serious finding that requires immediate professional attention.

Step 2: Check Gutters and Downspouts

Gutters are accessible from the ground or a low ladder and reveal important information about roof condition.

Granule accumulation: Check the bottom of your gutters and the areas where downspouts discharge. Small amounts of granules are normal, especially after a new roof is installed. Heavy granule buildup in gutters from an older roof indicates accelerated shingle wear.

Sagging or separation: Gutters that sag between hangers or have pulled away from the fascia board are not draining properly. Water backs up, overflows, and can work its way under the roof edge.

Debris and clogs: Gutters full of leaves, pine needles, or other debris block water flow. After cleaning, run a hose through each gutter section to verify water flows freely to the downspout.

Downspout discharge: Verify that downspouts extend at least four feet from the foundation or connect to underground drains. Water pooling at the foundation causes basement and foundation problems unrelated to the roof, but also indicates the gutter system is not doing its complete job.

Step 3: Examine Flashing and Roof Edges

Look at the visible flashing from the ground level, focusing on the areas where the roof meets vertical surfaces.

Chimney flashing: Check the metal flashing where the roof meets the chimney on all sides. Look for visible gaps, rust, or areas where the flashing has pulled away from the chimney mortar. If you can see daylight between the flashing and the chimney from the ground, that gap is large enough to cause a leak.

Wall flashing: Where the roof meets a vertical wall (such as a dormer or a second-story wall), check for lifted or separated flashing.

Drip edge: The metal strip along the roof edges should be intact and properly aligned. Bent, missing, or rusted drip edge allows water behind the fascia board.

Soffit condition: Look at the underside of the roof overhang. Peeling paint, staining, rot, or visible holes indicate moisture problems or animal entry points that need attention.

Step 4: Inspect the Attic Interior

This step requires entering the attic, which in most homes means pulling down the attic stair or removing a ceiling access panel. Bring a flashlight and step carefully on the joists or attic flooring.

Daylight penetration: Turn off the flashlight and look for any pinpoints of daylight coming through the roof deck. Light means water can also get through.

Water stains: Look at the underside of the roof decking and the rafters or trusses for dark stains indicating past or current leaks. Fresh stains may be wet to the touch. Old stains that are dry and uniform may indicate a leak that has been repaired.

Mold or mildew: Any fuzzy growth, black spots, or musty smell in the attic indicates excessive moisture from either a roof leak or inadequate ventilation.

Ventilation: Verify that soffit vents are not blocked by insulation pushed against them. Check that ridge vents, box vents, or gable vents are present and appear unobstructed. Proper airflow keeps the attic dry and extends shingle life.

Insulation: Insulation should be evenly distributed and at or above the recommended depth for your climate zone (typically R-38 to R-60, or about 10 to 16 inches of fiberglass batts). Compressed, displaced, or wet insulation needs attention.

Step 5: Check Interior Ceilings and Walls

Walk through the top floor of your home and examine the ceilings and upper walls for signs of roof leaks that have penetrated into the living space.

Water stains on ceilings: Brown or yellowish rings on the ceiling directly below the attic indicate water has passed through the roof, through the attic, and into the living space. This is an active leak that needs prompt repair.

Bubbling or peeling paint: Moisture trapped behind the paint surface causes bubbling, peeling, or flaking on ceilings and upper walls.

Sagging drywall: A ceiling that appears to sag or bulge has likely absorbed water, which adds weight and weakens the drywall. Severely water-damaged drywall can collapse.

Step 6: Document and Schedule Repairs

Photograph every issue you identify and note its location relative to specific features (above the garage, near the back chimney, in the northeast corner of the attic). This documentation helps the professional roofing contractor locate and address each issue efficiently when you call for service.

For gutter cleaning and minor debris removal, most homeowners can handle these tasks themselves with basic safety precautions. For anything involving the roof surface, flashing, structural issues, or active leaks, hire a licensed roofing professional. The risk of injury from roof work and the potential for amateur repairs to make problems worse both outweigh the cost of professional service.