Product Overview
Lightweight Insulating Mortar for Thermal Bridge-Free Walls
INSU-MORTAR is a pre-mixed thermal and sound insulation mortar — designed as a companion product to INSUBLOCK — composed of pretreated EPS beads, aggregates, geopolymers, unique additives and Portland cement. It acts as the “missing link” in an insulated wall system by ensuring the joints between blocks do not become paths for heat transfer.
At 1000 kg/m³, INSUMORTAR is approximately 50% lighter than standard mortar. It is easy to mix, apply and tool — behaving exactly like standard masonry mortar while providing far superior thermal performance. Factory-mixed bags eliminate inconsistency, reduce waste, and come in pre-calculated 40 kg packs backed by a 20-year warranty.
Recommended for: Thermal insulation binding mortar for connecting masonry blocks in both internal and external walls — for all INSUBLOCK walling systems in residential, commercial and industrial structures in Oman.
At a Glance
Why Choose INSUMORTAR
Key Benefits
Thermal Continuity
Prevents heat leakage through mortar joints, maintaining the efficiency of the entire wall system. U-Value of just 0.42 W/m²K for a 20 cm wall.
Ultra-Lightweight
At 1000 kg/m³, INSUMORTAR is approximately 50% lighter than standard mortar, reducing the overall dead load on structures and foundations.
Acoustic Insulation
Contributes to the reduction of sound transmission, complementing INSUBLOCK's acoustic performance for a more peaceful living and working environment.
Breathable & Rot-Proof
Acts as a breathable layer that resists high humidity and is almost entirely rot-proof, protecting wall joints long-term.
Designed for INSUBLOCK
Workability, open time and bedding thickness are optimised for INSUBLOCK masonry — same thixotropic behaviour as standard mortar for excellent workability.
Zero Waste & Guaranteed Quality
Factory-mixed in pre-calculated 40 kg bags. Reduces material loss and preparation time while ensuring consistent performance with no human mixing error.
20-Year Warranty
Long-term assurance for thermal insulation performance — backed by MCP's commitment to quality and sustainable construction.
Product Characteristics
Engineered to complement INSUBLOCK in Oman's climate.
Energy
Efficiency
Noise
Reduction
Fire
Resistance
Improved Building
Lifespan
Green Building
Product
Moisture
Control
20 Years
Warranty
Breathable
Layer
Specifications
Technical Data
| Dry Density | 1000 kg/m³ |
| Thermal Conductivity (λ) | 0.091 W/mK |
| Compressive Strength | Up to 5 MPa |
| U-Value | 0.42 W/m²K (20 cm wall width) |
| Consumption | ≈ 1.8 kg/block — 24.5 kg/m² |
| Package Weight | ≈ 40 kg |
| Application Method | Trowel or notched spreader |
| Joint Thickness | 10–15 mm |
| Fire Reactivity | Non-combustible |
| Breathable | Yes – Almost Rot-Proof |
| Warranty | 20 Years |
| Suitable For | INSUBLOCK masonry walls (interior & exterior) |
| Compliance | Tested to Omani & EN standards |
Application
How to Apply
Ensure block courses and the work surface are clean and free from dust or loose material. Use clean water for mixing.
Add the bag contents to clean water and mix with a paddle mixer to a smooth, consistent mortar. Follow the water:powder ratio stated in the TDS.
Spread INSUMORTAR evenly onto the bed face of the block to a thickness of 10–15 mm. Apply to both bed and perpendicular joints for full thermal continuity.
Set the next block firmly into position and tap to achieve the required joint thickness. Check for level and alignment continuously as you proceed.
Documentation
Downloads & Lab Reports
Official technical documentation and lab test reports for INSUMORTAR.
Support
