Description
S4Wall DY 25 is a high-performance, cement-based adhesive mortar containing polymer additives. It is designed for bonding masonry elements such as brick, pumice, and stone, offering excellent bonding strength and stability. This mortar is ideal for both interior and exterior applications and provides resistance to thermal shocks, water, and frost.
✅ Advantages:
- Easy to apply
- Provides strong adhesion
- High flexibility
- Resistant to thermal shocks, water, and frost
📌 Application Areas:
- For bonding masonry elements such as brick, pumice, and stone
- Indoor and outdoor applications
- On vertical surfaces
⚙️ Technical Specifications:
| Property | Value |
|---|---|
| Chemical Structure | Cement-based, polymer-added powder |
| Powder Density | ~1.50 g/cm³ (±0.1) |
| Water Mixing Ratio | 4.25–4.75 L water / 25 kg powder |
| Compressive Strength (EN 1015-11) | ≥ 5 N/mm² |
| Bond Strength (EN 1015-12) | ≥ 0.4 N/mm² |
| Capillary Water Absorption | ≤ 0.40 kg/m²·min0.5 |
| Water Vapor Permeability (EN 1015-19) | ≤ 25 |
| Thermal Conductivity (EN 1745) | ≤ 0.47 W/mK |
| Pot Life | 1–2 hours |
| Consumption | 13–21 kg/m² (depending on the size of masonry elements) |
🛠️ Application Instructions:
- Ensure the surface is clean, smooth, and solid
- Mix with clean water until a homogeneous mixture is achieved
- Apply with a trowel to the vertical sides of the masonry element
- Press the adhered masonry element with a rubber mallet
⚠️ Warnings:
- Do not apply in weather conditions below +5°C or above +30°C
- Avoid application on frozen, melting, or wet surfaces
🧽 Cleaning & Storage:
- Clean tools with solvent immediately after use
- Store in a dry, moisture-free area, unopened, for up to 12 months
🧯 Safety:
- Wear protective clothing, gloves, and masks during application
- Avoid contact with eyes and skin
- Keep out of reach of children
- Consult the Safety Data Sheet (SDS) for more details





