Siga Fentrim 430 Grey 4" x 82' High-Performance Exterior Air Barrier Sealing Tape

The SIGA Fentrim 430 Grey is a high-performance, fleece-backed acrylic flashing tape designed for superior exterior air sealing and weatherproofing around window and door frames and for above-grade masonry connections. It is notable for its ability to adhere strongly to various substrates like concrete, masonry, and wood without requiring a primer, even in cold temperatures.

Key Features and Specifications

• All-Weather Performance: The acrylic adhesive provides strong, stable adhesion in a wide range of temperatures, including cold weather application down to 14°F (-10°C).
• Durable and Abrasion-Resistant: It features a robust, polyolefin (PO) fleece backing that resists jobsite abrasions and damage.
• Vapor Permeable: Unlike some traditional tapes (like asphalt or butyl tapes), it is watertight yet semi-permeable, allowing walls to dry while still blocking bulk water and creating a continuous air barrier.
• Easy Installation: It includes a siliconized split-release liner that helps with quick and precise application, especially in corners and tight areas.
• UV Exposure: It can withstand UV exposure for up to 4 months.

6 rolls per box. Sold individually.