YY-901 | Waterproof Butyl Adhesive Tape

Product Overview

YUNYAN YY-901 is a self-adhesive waterproof repair tape built with an aluminum-foil facing, a butyl-rubber sealing layer, and a removable release liner. It is designed for fast sealing and localized leak repair on compatible roofing, sheet-metal, gutter, pipe, wall-joint, and construction surfaces.

For dependable results, specify Waterproof Butyl Adhesive Tape as part of a complete system, verify substrate compatibility, and follow the approved technical data sheet and site trial.

Key Features & Benefits

· Designed to reduce water penetration through compatible mineral or building substrates.

· Supports practical application on repair, renovation, and new-build waterproofing work.

· Formulated for reliable adhesion when the substrate is sound, clean, and correctly prepared.

· Suitable for professional project use with conventional construction tools.

· Can be integrated into a complete waterproofing system with compatible primers, reinforcement, or protective finishes.

Recommended Applications

· Roofs and balconies.

· Basements and retaining walls.

· Bathrooms and wet areas.

· Concrete and masonry substrates.

· Localized leak-repair and renovation work.

Application Guide

1. Confirm that the substrate is structurally sound, clean, and free from dust, oil, laitance, loose material, and standing water.

2. Prepare, mix, dilute, or condition the product strictly in accordance with the approved TDS and job-site trial.

3. Apply an even, continuous layer using the method specified for the product; reinforce joints, cracks, corners, and penetrations where required.

4. Protect the fresh work from rain, freezing, contamination, and premature traffic until the system has cured.

Packaging, Storage & Safety