GCA
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
Performance
Unit | Nominal Value | Test Method | |
Dynamic Tensile Adhesion | N/cm2 | 30 | H5 |
Dynamic Shear Adhesion | N/cm2 | 12 | H15 |
90° Peel Adhesion | N/cm | 7 | H48 |
180° Peel Adhesion | N/cm | 14 | H41 |
Specific Gravity | g/cm3 | 1.6 | H6 |
Moisture Vapour Transmission Rate | g/m2/24hr/mm | 0.15 | ISO9932 / BS ISO 15106 |
Service Temperature Range | °C | -40 to +110 |
H = HS Butyl Test Method
Technical Approvals
National Federation of Roofing Contractors (NFRC) Class A Performance – Third party certification by a UKAS accredited laboratory.
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