HYDRO-BLOK® Joint Sealant is a polyurethane-based waterproofing sealant formulated for use within HYDRO-BLOK® shower systems. It creates a flexible, watertight bond across seams, joints, and panel connections to support moisture control in wet-area installations.
The non-sag formulation allows controlled application on vertical and horizontal surfaces, while primerless adhesion supports direct bonding to HYDRO-BLOK® components and compatible construction substrates.
Key Features
- Polyurethane-Based Sealant: Forms a flexible, waterproof seal suitable for shower system assemblies.
- Primerless Adhesion: Bonds directly to HYDRO-BLOK® panels and common construction materials without primer.
- Non-Sag Consistency: Supports clean application on vertical joints and seams.
- Flexible Performance: Elongation of 250% accommodates movement within the assembly.
- Weather-Resistant Formula: Exterior-grade, paintable, and non-yellowing after cure.
- Wide Temperature Tolerance: Applies between 35°F and 110°F with service temperatures from -60°F to 225°F.
- Industry Compliance: Meets ASTM C920 Type S, Grade NS, Class 25, Use NT, M, and A.
Specifications
| Specification | Details |
|---|---|
| Consistency | Non-sag |
| Skin Time | 30–40 minutes |
| Elongation at Break | 250% |
| Tensile Strength | 200 psi |
| Lap Shear | 250 psi |
| Application Temperature | 35°F to 110°F |
| Service Temperature | -60°F to 225°F |
| Shelf Life | 12 months unopened at 75°F |
HYDRO-BLOK® Joint Sealant supports watertight sealing and movement accommodation at seams and joints within HYDRO-BLOK® shower system installations.
