Membrane Types Most Vulnerable
  • TPO (Thermoplastic Polyolefin): Prone to chemical breakdown from animal fats, resulting in bubbling, softening, seam failures, and leaks.[4][6][1]
  • EPDM Rubber: Vulnerable to animal or vegetable oils and fats, which cause swelling and deterioration of both membrane and adhesives.[2][4]
  • Modified Bitumen/Built-Up Roof: Animal and vegetable greases will break down asphalt binders, causing swelling, wrinkling, and loss of water resistance.[8][7][4]
  • PVC Membrane: Much more chemically resistant, but heavy, prolonged exposure can still lead to localized damage if not managed—maintenance is still critical.[3][5][6]
Key Damage Mechanisms
  • Softening or loss of membrane properties: Membranes become spongy, lose strength and waterproofing ability.[4][8]
  • Blistering, bubbling, and cracking: Acids in grease degrade roofing material, especially under heat, causing swelling and cracks.[9][4]
  • Delamination and seam failure: Adhesives and tapes lose effectiveness, leading to seam openings and leaks.[1][8]
  • Premature roof system failure: Prolonged exposure can void warranties and necessitate early replacement at significant cost.[7][8]