Durex® ACR Limestone is a two-component polymer-based cementitious base coat consisting of a water-based acrylic liquid component Cast Bond, mixed with the dry component ACR Limestone. Advanced polymer technology combines the strength of polymer-modified cement with the flexibility of synthetics.
- Superior adhesion to various inorganic substrates
- Combines the strength of cement with the flexibility of synthetics
- Designed to allow minor movements in the substrate without causing cracking in the base coat
- Excellent job site quality control
- Breathable coating; allows water vapour within the wall system to evaporate
Durex® ACR Limestone provides a natural stone finish to exterior walls. It is also a breathable and water resistant decorative element that can be easily applied to any project.
| Product Type | Cementitious dry fine powder mixture | |
| Appearance | White fine powder | |
| Viscosity | n/a | |
| pH Level | 11-12 | |
| Toxicity | Non-Toxic |
| Method | Results | |
|---|---|---|
| Compressive Strength |
|
|
| Flexural Strength | ASTM C348 | ≥ 4 MPa |
| Water Absorption | ASTM C642 | ≤ 6% |
| Adhesion to Substrate | ASTM C297 | ≥ 1.0 MPa |
| Dry Adhesion | ASTM D4541 | 1.30 MPa (188 psi) |
| Surface-burning Characteristics | CAN4-S102 |
|
| Freeze-Thaw Resistance | ASTM C666 | No visible damage after 50 cycles |
| Surface Hardness | ASTM D2240 (Shore D) | ≥ 65 |
| Capillary Water Absorption | ASTM C1585 | ≤ 0.2 kg/m²h⁰·⁵ |
| Permeability to Water Vapor | ASTM E96 | 285 – 450 ng/Pa.s.m² (5 - 8 perms) |
| UV Resistance | ASTM G154 | No significant degradation after 2500 hours |
| VOC Content | ASTM D3960 | < 50 g/L (Low-VOC) (when mixed with Cast Bond) |
