Step 1: Pre-Inspection Document Review (within 2 hours)
- Collect the original roof system specification, including membrane type (TPO, EPDM, PVC, modified bitumen, BUR, or metal), thickness in mils, and insulation R-value.
- Pull the last three years of repair invoices and any leak call logs with dates and interior locations.
- Confirm warranty status: NDL versus material only, expiration date, and any open claims.
- Review satellite imagery to calculate approximate square footage and identify rooftop equipment count.
- Note building age, last replacement date, and any tenant build out work that penetrated the deck.
- Request the original shop drawings or as built roof plan if available; these show drain locations, slope direction, and expansion joint placement that are not visible from satellite.
- Log any prior Viking Meadows Metal Roofing or third party inspection reports for trend comparison on blister count, seam condition, and ponding footprint.
Step 2: Exterior Ground-Level Walk (20 minutes)
- Photograph all four elevations at fixed distances of 15, 30, and 50 feet.
- Inspect gutters and downspouts for granule loss, sediment depth greater than 0.25 inch, and rust perforation.
- Check parapet caps for displacement, open joints exceeding 0.125 inch, and missing sealant.
- Scan fascia and soffit for staining patterns that indicate flashing failure above.
- Document grade conditions within 5 feet of the building for splash back damage to wall systems.
- Note any tree limbs within 10 feet of the roof edge; overhanging branches accelerate membrane abrasion and contribute to drain blockage.
- Record adjacent building heights and prevailing wind exposure, both of which influence uplift patterns and debris loading in Viking Meadows.
Step 6: Moisture Survey
- Run an infrared scan during the thermal differential window (typically 1 to 3 hours after sunset on a clear day).
- Mark suspected wet insulation areas with paint or chalk for verification.
- Confirm IR findings with a capacitance meter reading; flag any value over 50 on a 0 to 100 scale.
- Perform a 2-inch core sample at no fewer than two suspect locations; record insulation type, thickness, and saturation by weight.
- Plot wet areas on the roof plan as percentage of total field area.
- Patch every core with matching membrane and a target plate, sealed with manufacturer approved primer and sealant.
Step 3: Safe Roof Access and Fall Protection Setup
- Verify ladder rating at minimum Type IA (300 lb capacity) and tie off at the parapet.
- For roofs over 6:12 slope or with leading edge work, deploy a personal fall arrest system with 5,000 lb rated anchor points.
- Confirm parapet height: walls under 39 inches require active fall protection per OSHA 1910.28.
- Place toe boards or warning lines 15 feet from any unprotected edge during the survey.
- Inspect existing roof hatches for functional gas springs, intact rails, and a self closing latch before transiting.
Step 9: Findings Review with Property Management
- Walk through the report page by page, either on site or via screen share.
- Identify which items are warranty eligible and which fall to the owner.
- Sequence work by urgency and budget cycle.
- Provide a written estimate for any recommended repairs at no charge.
- Schedule a follow up inspection date, typically 6 or 12 months out, to track defect progression.
What the Free Assessment Does Not Include
- Destructive testing beyond the two confirmation cores noted in Step 6.
- Engineered load calculations for new rooftop equipment or solar arrays.
- Asbestos or hazardous material sampling, which requires a licensed abatement consultant.
- Code compliance review for full replacement, which is delivered as part of a paid design package.
For buildings approaching the decision point between continued repair and capital replacement, the Viking Meadows cost benchmarks in our guide to commercial roof repair vs replacement can help frame the conversation with ownership.
Step 8: Report Compilation and Deliverables
- Annotated roof plan showing every defect plotted by GPS or grid coordinate.
- Photo log with minimum 30 images for roofs under 25,000 sq ft, scaling up from there.
- Defect schedule classified by priority: Priority 1 (active leak), Priority 2 (12 month risk), Priority 3 (preventive maintenance).
- Estimated remaining service life in years, with assumptions stated.
- Repair budget ranges in three tiers: spot repair, sectional restoration, full replacement.
- Recommended maintenance interval based on system age, exposure, and current defect density.
If the report shows active intrusion, the next step is usually emergency stabilization rather than waiting on a full project bid. Our process for that handoff is documented in the commercial emergency roof repair workflow, which prioritizes tarping and dry in before water reaches insulation or interior finishes.
Step 4: Field Membrane Survey (within 2 hours depending on square footage)
- Walk the field in a grid pattern with passes spaced no more than 10 feet apart.
- Probe seams every 25 linear feet with a dull stainless probe; flag any opening over 0.0625 inch.
- Measure ponding depth 48 hours after the last rainfall; report any standing water exceeding 0.5 inch as a deficiency.
- Count and map blisters, ridges, and fishmouths per 100 square foot quadrant.
- Pull test a sample of mechanical fasteners; report any with less than 250 lb withdrawal resistance.
- Document UV degradation: chalking on TPO, alligatoring on modified bitumen, shrinkage on EPDM greater than 0.25 inch from termination bars.
- Record surface temperature with an IR thermometer at three points; readings above 160 F on white membrane indicate dirt loading or coating breakdown.
For buildings showing membrane fatigue but no deck damage, the report often points toward restoration rather than tear off. We cover that decision in detail in our breakdown of when to coat versus replace your commercial roof, including the cost ratios that drive the call.
Step 5: Penetration and Flashing Detail Inspection
- Inspect every pipe boot, vent, and curb for cracking, separation, and sealant pull back.
- Measure flashing height: minimum 8 inches above the finished roof surface per NRCA recommendation.
- Check behind appliances curbs for proper cricket installation on the uphill side of any unit wider than 24 inches.
- Document scupper and drain conditions, including strainer presence and debris accumulation depth.
- Photograph each detail at three angles: overview, mid range, and close up with a scale reference.
- Verify pitch pocket fill depth at minimum 2 inches of pourable sealer above the top of the pocket; flag any concave settling.
- Check gas line supports and conduit straps for membrane abrasion at every contact point along the run.
Step 7: Interior Verification
- Inspect the underside of the deck from the highest accessible level (ceiling tile lift or catwalk).
- Photograph stains with measurement reference; note diameter and color (brown indicates active, white indicates mineral leaching from old leaks).
- Cross reference interior stain locations with exterior deficiencies mapped in Step 4.
- Use a pin type moisture meter on exposed deck or structural members; report readings above 16 percent in wood or above 4 percent reference in steel adjacent gypsum.
- Interview building staff for leak history not captured in written logs, including dates, weather conditions, and any temporary patches applied.