CRL GT205 Gray 1/8" x 3/8" Butyl Glazing Tape

CRL GT205 Gray 1/8" x 3/8" Butyl Glazing Tape

C.R. Laurence GT205 Gray 1/8" x 3/8" Butyl Architectural Glazing Tape offers a robust solution for creating durable weather seals between surfaces. Crafted from a high-quality butyl rubber formulation, this tape is designed to withstand the rigors of age and weather, ensuring a long-lasting performance in various applications. With 100% solids content and no VOCs, it meets stringent AAMA certification standards, making it ideal for use as an exterior primary spacing and glazing seal. The GT205 tape is specifically engineered to compress approximately 10% during installation, accommodating the natural expansion and contraction of materials under wind loading forces. This flexibility enables reliable sealing of glass into window sashes and other architectural surfaces, including metal, wood, and plastic joints. With a service life of at least 20 years and a temperature range from -40°F to 190°F, this tape is built to endure. Available in gray and black, the tape comes in a convenient 25-foot roll, with dimensions of 1/8 inch in thickness and 3/8 inch in width. For optimal results, proper installation practices are recommended, including ensuring clean surfaces and achieving positive contact during application. Experience the reliability of C.R. Laurence GT205 for your glazing needs.

Gray 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
• Specifications AVD3788-GT.pdf