Calcium Silicate Insulation Paste / Putty (Ready-Mix System)
 
High Temperature Insulation Paste – Just Add Water & Binder
Wedge Calcium Silicate Paste / Putty is a ready-to-mix high-performance insulation system designed for on-site application on complex geometries, pipes, valves, and irregular industrial surfaces.
Manufactured using ultra-fine calcium silicate insulation powder, this system transforms into a trowel-grade insulating paste when mixed with water + sodium silicate binder, delivering board-level performance without cutting or wastage.
 
Why Choose Calcium Silicate Paste Instead of Boards?
Key Advantages
No cutting, no joints → Zero thermal leakage
Ideal for valves, bends, flanges, irregular shapes
Faster installation (40–60% time saving)
Excellent adhesion to metal & masonry
High compressive strength after curing
Non-toxic, asbestos-free & fiber-free
 
Product Grades & Temperature Range
Grade
Max Temperature
CSP 650
650°C
CSP 900
900°C
CSP 1000
1000°C
CSP 1100
1100°C
Suitable for low to ultra-high temperature insulation applications
 
Composition & Powder Analysis
The powder you provided is a fine, micro-porous calcium silicate blend with:
Particle Size: 10–300 microns
Bulk Density: 180–260 kg/m³
Chemical Structure:
SiO₂: 35–55%
CaO: 30–44%
Al₂O₃: 1–10%
This structure creates:
High porosity (>87%)
Low thermal conductivity
Lightweight yet strong insulation matrix
 
Ready-to-Use Mixing Formula (Putty Preparation)
Standard Mixing Ratio (By Weight)
Component
Ratio
Calcium Silicate Powder
100 parts
Sodium Silicate Binder
15–25 parts
Water
28–45 parts
 
Step-by-Step Mixing Process
Step 1 – Prepare Binder
Mix Sodium Silicate (Na₂SiO₃) with water
Density: ~1.50–1.55 g/cm³
Step 2 – Add Powder
Slowly add powder into liquid
Use low-speed mixer (300–500 RPM)
Mix for 5–10 minutes until lump-free paste
Step 3 – Achieve Putty Consistency
Target: Smooth, trowelable, non-slump paste
Pot Life: 40–60 minutes
Application Method (Paste / Putty Use)
Apply using trowel or spatula
Layer thickness: 10–25 mm per coat
Maximum total thickness: 100 mm
Dry time between coats: 4–8 hours
Final Curing
Air dry: 24–48 hours
Heat ramp: ≤50°C/hour
👉 Full strength achieved after first thermal cycle
 
Performance After Curing
Thermal Conductivity (Low Heat Loss)
100°C: ~0.055–0.063 W/mK
400°C: ~0.10–0.112 W/mK
Mechanical Strength
Compressive Strength: Up to 1.4 MPa
Flexural Strength: Up to 0.45 MPa
Key Properties
High porosity insulation
Thermal shock resistant
Chemically inert (H₂, CO, NH₃ environments)
 
Applications of Calcium Silicate Putty
🔧 Industrial Use Cases
Pipe insulation (valves, bends, flanges)
Furnace & kiln insulation
Boilers & turbines
Petrochemical plants
Power plants
Steel & metal industries
Repair & Maintenance
Gap filling between insulation boards
Repair of damaged insulation
Retrofitting irregular surfaces
📦 Packaging & Shelf Life
Packing: 25 kg moisture-proof bags
Shelf Life: 12 months
Storage: Dry conditions (5–45°C)