TPO Single Ply Roof Seam Inspection

Inspection template for evaluating TPO single-ply roof seams, including seam width, heat weld quality, peel test results, and termination details.

Inspection Details

• Project / roof area identified
  Record the building, roof section, gridline, elevation, or area inspected.
• Inspection date and time recorded
  Document when the seam inspection was performed.
• Ambient conditions suitable for inspection
  Record whether temperature, moisture, and surface conditions were suitable for seam evaluation per manufacturer guidance.
• Inspector name and company
  Identify the inspector or competent person performing the inspection.

Seam Width and Overlap

• Seam width measured within specification
  Measure the finished seam width at representative locations.
• Overlap is consistent and continuous
  Confirm the membrane overlap is continuous with no open laps, fishmouths, or voids.
• Seam alignment is straight and properly lapped
  Rate seam alignment and lap consistency along the inspected run.
• No visible contamination at seam interface
  Check for dirt, moisture, adhesive residue, or other contamination that could compromise weld integrity.

Heat Weld Quality

• Weld bead is continuous and uniform
  Verify the weld bead is consistent along the seam with no skips, voids, or burn-through.
• Heat weld shows proper fusion without scorching
  Rate the weld appearance for proper fusion, edge seal, and absence of overheating damage.
• No wrinkles, fishmouths, or bridging at seam
  Check for wrinkles, fishmouths, bridging, or other defects that can reduce seam performance.
• Hand probe or edge check confirms secure weld
  Verify the seam edge is secure and does not lift under a light probe where permitted by site procedure.

Peel Test Verification

• Peel test performed at required locations
  Confirm peel testing was completed at the specified frequency and locations.
• Peel test result recorded
  Record the outcome of the peel test for the inspected seam segment.
• Peel strength documented
  Record measured peel strength or pull resistance where testing equipment is used.
• Failed test locations marked and isolated
  Verify failed areas are identified for repair, retest, and documentation.

Termination and Edge Details

• Termination bars or edge details are secure
  Check that terminations, bars, and edge securement are tight, continuous, and properly fastened.
• Sealant and flashing at terminations are intact
  Verify sealant, flashing, and cover details at terminations are intact with no gaps, voids, or splits.
• Penetrations and transitions adjacent to seam are properly detailed
  Rate the condition of adjacent penetrations, corners, and transitions that affect seam performance.