CRL GT204 Black 1/8" x 3/8" Butyl Glazing Tape

CRL GT204 Black 1/8" x 3/8" Butyl Glazing Tape

C.R. Laurence GT204 Black 1/8" x 3/8" Butyl Architectural Glazing Tape is expertly crafted to meet the demands of modern glazing applications. This extruded, preformed tape features a durable butyl rubber formulation that is resistant to age and weather, ensuring a long-lasting seal between surfaces. With a 100% solids content and a hardness of 20 Durometer Shore "A" at 77°F (25°C), this tape is ideal for creating a flexible weather barrier that accommodates normal expansion and contraction due to temperature fluctuations. Designed as an exterior primary spacing and glazing seal, the GT204 is perfect for glazing glass into window sashes and sealing various architectural surfaces, including metal, wood, and plastic joints. Its impressive service life of a minimum of 20 years and ability to endure service temperatures ranging from -40°F to 190°F (-40°C to 88°C) makes it a reliable choice for any project. This tape is available in both gray and black, with a roll length of 25 feet (8 m) and a thickness of 1/8 inch (3 mm). Compliant with AAMA standards, the GT204 ensures professional-grade performance, making it an essential addition to your glazing toolkit.

Black 1/8" x 3/8" Butyl Architectural Glazing Tape

• Age and Weather Resistant Butyl Rubber Formula
• 100% Solids Content
• Meets AAMA Certification
• Used as an Exterior Primary Spacing and Glazing Seal
• Available in Gray and Black

CRL Butyl Architectural Glazing Tape is an extruded, preformed tape furnished on release paper rolls. Based on a butyl rubber formulation with proven age and weather resistant properties, it is designed to create a long lasting, flexible weather seal between two surfaces that will be subjected to normal expansion/contraction and wind loading forces. It is used as an exterior primary spacing and glazing seal when glazing glass into a window sash; also used to seal other architectural surfaces such as metal to metal joints, wood to glass, metal to plastic, etc. The thickness is designed to be compressed approximately 10 percent at installation to accommodate surface alignments.


Typical Properties
Base Polymer: Butyl rubber (polyisobutylene)
Solids Content: 100% solids (no asbestos)
Cure Time: Fully cured before application
Hardness: 20 Durometer Shore "A" @ 77° (25°C)
Temperature Range: Application 20°F (-7°C) to 120°(49°C), Service -40°F (-40°C) to 190°F (88°C)
VOC Content: 0%
Joint Movement: ±15% of joint width
Service Life: 20 year minimum

Applicable Standards: AAMA 804.3, 806.3, and 807.3. ASTM C1281

Good Glazing Practices
The following "Good Glazing Practices" are recommended when using CRL Glazing Tapes. Surfaces to be adhered should be free of frost or standing water, brushed clean, solvent washed (MEK, Toluene or Naptha) and wiped dry. At installation, positive contact and approximately 10 percent compression is recommended to fully marry surfaces to be joined. Glazing tapes kept under compression with clips or wedges provide the best seals.

Always use setting blocks (80 durometer Shore "A" hardness) placed at the sill quarter points. Spacing shims are recommended to accommodate wind loading when glass lite is over 100" (50 durometer Shore "A" hardness). Tape placement on the sill rabbet is not to be below the sight line unless a cap bead is specified, then tape is placed 3/16" (4.8 mm) below the sight line to allow for the cap bead. Do not overlap tape to join; always butt ends without stretching. To keep the tape surface clean, leave the release paper in place until ready-to-set the glass.


Product Warning:

Limitations: For applications above two floors use a spacer, shim, or a structural cap bead (such as silicone) to prevent over compression or use CRL 100+ Load Bearing Glazing Tape.

Resources

• LEEDTape.pdf
• LEEDTape.pdf
• Specifications AVD3788-GT.pdf