Commercial Roof Inspection Checklist: What to Document on Site

Start with the basics. Confirm the property address, roof access, known roof system, recent service history, reported leaks, and who authorized the inspection. If the site has several roof levels or additions, name the sections before the walk starts. "North roof," "warehouse addition," and "office roof" are more useful than a folder full of unlabeled photos.

Safety belongs in the inspection plan. OSHA requires fall protection for roofing work on low-slope roofs when workers are exposed to unprotected sides or edges 6 feet or more above lower levels. OSHA's low-slope roofing requirements cover the available protection methods.

For every section, capture the basic context before close-up defect photos:

• roof section or level;
• roof system, if known;
• approximate age, if available;
• access point;
• overall condition;
• drainage layout;
• rooftop equipment and penetrations;
• areas that could not be safely inspected.

This prevents a common problem: a clear photo of a defect with no reliable way to locate it later.

A useful photo set shows both the problem and where it sits on the roof. Pair close-ups with wider location shots.

Typical photo groups include:

• wide view of each roof section;
• roof edges and perimeter conditions;
• seams and laps;
• flashing and termination details;
• penetrations and pipe boots;
• curbs and rooftop equipment;
• drains, scuppers and gutters;
• ponding or staining;
• membrane punctures, splits, blisters or open seams;
• previous repair areas;
• interior evidence of leaks, when access is available.

NRCA training separates visual inspection, leak investigation, moisture surveys and core sampling, so a roof walk should not be treated as a substitute for every diagnostic method. NRCA's roof repair and maintenance training covers those methods.

"Bad area near unit" is not a useful field note.

A better note records three things: location, condition and scale. For example:

South roof, west side of RTU-4: approximately 18-inch open seam with visible dirt line below the lap. No active interior leak confirmed during visit.

That sentence tells an estimator or service manager where to look, what was seen, and what was not proven.

Avoid diagnosing more than the inspection supports. If the membrane is stained, write "staining." If moisture was not tested, do not write "wet insulation." If hail was reported in the area but no functional damage was confirmed, keep the weather history separate from the field finding.

Drainage problems are easy to miss when there is no standing water during the visit. Look for evidence instead:

• dirt or debris rings around low areas;
• blocked drains or strainers;
• staining around scuppers;
• vegetation or sediment;
• sagging areas;
• water marks on parapets;
• repairs concentrated around drainage points.

A dry roof can still show where water routinely sits.

The open field of the membrane is often the easiest part to inspect. Details are where many service calls begin.

Document:

• parapet and edge metal;
• wall flashings;
• counterflashing;
• expansion joints;
• pitch pockets;
• pipe penetrations;
• equipment curbs;
• skylights;
• roof hatches;
• drains and overflow paths.

If a detail is inaccessible, say so. An inspection report should distinguish "no defect observed" from "not inspected."

At the end of the walk, sort findings into immediate attention, repair candidates, monitoring items and conditions that need more testing. That makes the report useful for the next decision instead of just documenting that somebody walked the roof.

CapXos now treats inspection as part of the same property workflow used for roof research and takeoff. In CapXos, contractors can photograph conditions while walking the roof, dictate observations from a phone, and keep those notes tied to the correct roof section. The findings can then be brought together in an inspection report instead of being split between a camera roll, text messages and a separate spreadsheet.

Inspect is currently free to use. The same property can stay connected to the map, inspection findings and later measurements, which matters when the person estimating the job was not the person who performed the first walk.

Before leaving the property, confirm that the file contains:

• property and roof-section names;
• overall photos for every inspected section;
• close-up and location photos for each defect;
• drainage observations;
• flashing and penetration notes;
• active leak locations, if known;
• areas not inspected;
• temporary repairs completed during the visit;
• measurements still needed;
• recommended next action;
• a clear follow-up date or owner request.

If the estimator has to ask what half the photos show, the inspection record is incomplete.