Tunnel And Utility Tunnel PU Waterproof Coating One Component Cold Applied By Troweling Or Brushing

One-component Polyurethane Waterproof Coating For Tunnel And Utility Tunnel Municipal Project

Product Introduction

One‑component polyurethane waterproof coating is moisture‑curing reactive polymer waterproof material, manufactured from polyether polyol, isocyanate, fillers and functional additives. Ready‑to‑use out of drum. It cures by chemical reaction with moisture from ambient air to form continuous, dense, rubber‑like seamless waterproof film at room temperature. No on‑site proportioning required to avoid mixing errors. Widely applied for non‑exposed civil, industrial and municipal waterproof projects.

Product Features

1. One‑component ready‑to‑use: No weighing or mixing of A/B components. Avoid quality defects caused by wrong ratio, simple operation.
2. Moisture‑curing film formation: Cured by air moisture to form dense seamless rubber film with great impermeability.
3. High strength & elasticity: High tensile strength and excellent elongation‑at‑break, bridges micro‑cracks and accommodates substrate settlement and thermal deformation.
4. Excellent adhesion: Firm bonding to concrete and cement‑mortar substrate, resists hollowing, blistering and delamination.
5. Water & chemical resistance: Good resistance to long‑term water immersion, acid, alkali and salt, durable for water‑tank and sewage conditions.
6. Good low‑temperature flexibility: Remains elastic at low temperature, anti‑brittle for cold‑climate construction.
7. Perfect for complex details: Liquid‑applied to fully cover pipe roots, corners and floor drains for easy detail reinforcement.
8. Safe cold‑applied work: Brush or trowel at ambient temperature without open‑flame. Coal‑tar‑free, low‑odor and eco‑friendly.
9. Notice: Not UV‑resistant. Direct exposure is forbidden. Protective covering is required for exposed areas.

Key Construction Points

Application Scope

1. Underground waterproofing for basement slab, side wall and roof slab.
2. Waterproofing for damp indoor areas such as kitchen, bathroom and balcony.
3. Waterproof & anti‑corrosion for water tanks, sewage tanks and canals.
4. Non‑exposed roof, gutter and underground garage waterproofing.
5. Municipal waterproofing for metro, utility tunnel and tunnel projects.
6. Extra reinforcement for weak positions: pipe roots, corners and construction joints.