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GCA Butyl Strip



GCA® is a high performance butyl tape suitable for use in steel and aluminium roofing systems. It has been carefully formulated to provide a long-life, airtight seal to help buildings comply with Building Regulations Approved Document Part L Standard.
Product uses

  • External Metal Sheeting – sealing end and side laps in steel and aluminium roofing systems
  • Metal Liner Sheeting – sealing end laps
  • Sealing rooflights
  • Sealing metal flashings
  • Ridge and eaves sealing in combination with foam fillers
  • Sealing penetrations to roof and wall cladding


Technical Approvals

National Federation of Roofing Contractors (NFRC) Class A Performance – Third party certification by a UKAS accredited laboratory.