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STICKS FAST. STAYS PERMANENT. — INDUSTRIAL-GRADE ADHESION FOR VAPOR BARRIERS & PLASTIC LINERS:
Seal Tec's 9 mil polyethylene vapor barrier tape features a heavy-duty pressure-sensitive adhesive that sticks fast and stays permanent — bonding instantly to poly sheeting, plastic liners, underlayment, metal building insulation, and polyethylene surfaces for a rock-solid, airtight seal every single time. High conformability without excessive stretch means the tape forms a tight seal without losing adhesion over time. No lifting, no curling, no peeling. Built for the surfaces that matter most in moisture barrier applications.
WATERPROOF, UV, WEATHER & OIL RESISTANT — PERFORMS IN ALL CLIMATES: Engineered for real-world conditions, Seal Tec holds strong in extreme heat, freezing cold, high humidity, and direct UV exposure. Fully waterproof and oil-resistant, this tape creates a strong airtight seal that effectively blocks moisture vapor — helping maintain a clean, dry healthy enviroment in crawl spaces, basements, and attics. Won't degrade, discolor, or lose grip long after competing tapes have given up.
HEAVY DUTY 9 MIL THICKNESS — 4 INCH x 180 FT OF SERIOUS COVERAGE: At 9 mil thick, Seal Tec is tougher, more durable, and more puncture-resistant than standard vapor barrier tapes. Each 180-foot roll delivers generous coverage for large-scale installs, seam sealing, overlapping joints, penetrations, edge sealing, and repairs — giving contractors and DIYers the confidence to tackle any job size without running short.
PERFECT FOR CRAWL SPACE ENCAPSULATION, BASEMENT MOISTURE CONTROL & UNDERLAYMENT: Seal Tec is purpose-built for crawl space and basement encapsulation — sealing overlaps, seams, transitions, and penetrations where plastic sheeting meets to create a continuous moisture barrier. Ideal for joining vapor barrier runs, patching tears, sealing edges and penetrations, securing underlayment joints for floating floors and carpet padding, and creating dust barriers during renovation and construction projects. Also perfect for metal building insulation repair — sealing old, dirty, or torn insulation seams cleanly and permanently.
CONTRACTOR TRUSTED, DIY APPROVED — SEAL IT RIGHT THE FIRST TIME: From professional contractors and builders to first-time DIYers, Seal Tec delivers consistent, no-fail performance on every job in every climate. Designed for straightforward application — flexible enough to handle corners and transitions with ease, making installs faster and cleaner whether you're a seasoned pro or tackling your first encapsulation project. The glossy bright white finish pairs cleanly with white vapor barriers and insulation for a polished, professional result. When moisture control matters, trust Seal Tec.
Specs:
- 4 inches wide x 180 feet long
- 9 mil thickness
- Waterproof, UV-resistant, moisture barrier
Ideal for:
-Crawl space encapsulation
-Basement vapor barriers
-Underlayment seam sealing
-Insulation and plastic liner repairs
Ships fast, packed securely. Questions? Message us anytime — we're happy to help.
