Tunnel And Utility Tunnel PU Waterproof Coating One Component Cold Applied By Troweling Or Brushing
Price:
USD 1.4‑1.5/kg
MOQ:
1000kg
Delivery Time:
Negotiable
Brand:
shhous
Product Description
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
- One‑component ready‑to‑use: No weighing or mixing of A/B components. Avoid quality defects caused by wrong ratio, simple operation.
- Moisture‑curing film formation: Cured by air moisture to form dense seamless rubber film with great impermeability.
- High strength & elasticity: High tensile strength and excellent elongation‑at‑break, bridges micro‑cracks and accommodates substrate settlement and thermal deformation.
- Excellent adhesion: Firm bonding to concrete and cement‑mortar substrate, resists hollowing, blistering and delamination.
- Water & chemical resistance: Good resistance to long‑term water immersion, acid, alkali and salt, durable for water‑tank and sewage conditions.
- Good low‑temperature flexibility: Remains elastic at low temperature, anti‑brittle for cold‑climate construction.
- Perfect for complex details: Liquid‑applied to fully cover pipe roots, corners and floor drains for easy detail reinforcement.
- Safe cold‑applied work: Brush or trowel at ambient temperature without open‑flame. Coal‑tar‑free, low‑odor and eco‑friendly.
- Notice: Not UV‑resistant. Direct exposure is forbidden. Protective covering is required for exposed areas.
Key Construction Points
| No. | Item | Precautions |
| 1 | Substrate | Substrate must be solid & dry, free of standing water, dust and oil; interface treatment required for damp surface |
| 2 | Mixing Ratio | Weigh A & B strictly by weight ratio; wrong ratio causes uncured sticky or brittle film |
| 3 | Stirring | Electrically stir 3-5min until uniform; poor mixing causes partial curing failure |
| 4 | Pot-life | Use up within pot-life after mixing; discard gelled material, do not dilute with water |
| 5 | Coating Layers | Apply thin multi-coats in cross directions; avoid heavy coat to prevent blistering & sagging |
| 6 | Temperature/Humidity | Construct at 5℃-35℃; low temp slows curing; avoid rainy and dewy days |
| 7 | Ventilation | Keep ventilated, avoid inhaling volatile gas, wear protective equipment |
| 8 | Details | Apply extra reinforcement layer on corners, pipe roots and floor drains first |
| 9 | No Direct Exposure | Film is not UV-resistant; mortar protective layer mandatory for exposed areas |
| 10 | Tool Cleaning | Clean tools with special cleaner before curing; hard to clean after curing |
| 11 | Curing Protection | Avoid rain, ponding, treading and sharp-object damage during curing |
| 12 | Moisture Content | Standing water reduces adhesion and causes blistering; moisture content must meet requirement |
Application Scope
- Underground waterproofing for basement slab, side wall and roof slab.
- Waterproofing for damp indoor areas such as kitchen, bathroom and balcony.
- Waterproof & anti‑corrosion for water tanks, sewage tanks and canals.
- Non‑exposed roof, gutter and underground garage waterproofing.
- Municipal waterproofing for metro, utility tunnel and tunnel projects.
- Extra reinforcement for weak positions: pipe roots, corners and construction joints.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Weifang Shihua Chemical Building Material Co., Ltd.
Location
Shouguang City, Shandong Province, China
Contact Person
Faye Wang