CRL Butyl Architectural Glazing Tape is a high-quality, preformed tape fabricated from butyl rubber. It boasts exceptional weather-resistant properties and is specifically engineered to form a durable and flexible weather seal between surfaces that will be exposed to normal expansion/contraction and wind-loading forces. It serves as an ideal exterior primary spacing and glazing seal when installing glass into a window sash, as well as for sealing other architectural surfaces such as metal-to-metal joints, wood-to-glass, and metal-to-plastic. During installation, the tape is designed to be compressed by approximately 10 percent to accommodate surface alignments effectively.
Key Properties:
Base Polymer: Butyl rubber (polyisobutylene)
Solids Content: 100% (no asbestos)
Cure Time: Fully cured before application
Hardness: 20 Durometer Shore "A" @ 77°F (25°C)
Temperature Range: Application: 20°F (-7°C) to 120°F (49°C), Service:
40°F (-40°C) to 190°F (88°C) - VOC Content: 0%
Joint Movement: ±15% of joint width
Service Life: Minimum 20 years Applicable Standards: AAMA 804.3, 806.3, and 807.3. ASTM C1281
Best Practices For optimal results, ensure that the surfaces to be adhered are thoroughly cleaned and free of frost or standing water. Use setting blocks (80 durometer Shore "A" hardness) at the sill quarter points and spacing shims for glass lites over 100" with a 50 durometer Shore "A" hardness. During installation, aim for positive contact and approximately 10 percent compression to fully unite the surfaces. Additionally, ensure that the tape surface remains clean by leaving the release paper in place until ready to set the glass.
Product Warning: Limitations: For applications above two floors, employ a spacer, shim, or a structural cap bead (such as silicone) to avoid over-compression, or utilize CRL 100+ Load Bearing Glazing Tape.
