SpECcoat MHL

SpECcoat MHL is versatile and widely applicable in various demanding environments. Its robust formulation makes it ideal for several uses:

• Reinstatement of manholes
  
• Reinforcement of outfalls
  
• Protective lining for exposed concrete in sewage works
  

SpECcoat MHL offers a variety of advantages that make it the preferred choice for protecting concrete surfaces in challenging environments. Its unique formulation and properties ensure optimal performance and safety in applications where chemical and abrasion resistance are critical.

• Solvent free – non-hazardous in enclosed areas
  
• Highly impervious
  
• Excellent abrasion resistance
  
• Excellent impact resistance
  
• Excellent chemical resistance
  
• Trowels to a smooth finish
  
• Slip resistant
  
• Non-tainting
  

SpECcoat MHL is engineered to meet the highest performance standards, providing essential data for its effective application and use:

Property	Value
Compressive strength	50±5 N/mm² @ 1 day (ASTM C-109)
	65±5 N/mm² @ 7 days
	70±5 N/mm² @ 14 days
Flexural strength	25±5 N/mm² @ 7 days (ASTM C-348)
Tensile strength	10±2 N/mm² @ 7 days (ASTM C-307)
Water absorption	0.5 to 1.0% (ASTM C-413-94)
Pot life	1 hour
Initial Hardness	1 day
Full cure	7 days
Chemical resistance	10% Nitric acid: Good
Flash point	SpECcoat MHL >150°C
	SpECbuild Primer E1 >150°C
	SpECcoat Cleaning Fluid >40°C

Application of SpECcoat MHL
Preparation:
The substrate must be thoroughly prepared by either high pressure water jetting or by light grit blasting. Any contaminants such as oil, grease or laitance must be removed completely.

Priming:
The prepared surface should be primed with SpECbuild Primer E1. The contents of the curing agent should be emptied into the base component and stirred with a spatula until the product appears uniform. The mixed primer should then be applied to the prepared substrate by a stiff brush at a coverage of 5 m²/litre. If the primer appears to be absorbed into the surface easily, it will be necessary to apply a second coat once the initial coat is tack-free.

Mixing:
SpECcoat MHL is supplied in a three-component pack consisting of one tin of resin, one tin of hardener, and one bag of specially selected fillers. To mix, empty the contents of the hardener tin into the base component and mix with a slow speed drill and paddle until uniform. Then, while mixing, slowly add the filler component, ensuring that all ingredients are thoroughly blended. Mixing should continue for at least 5 minutes.

Application:
SpECcoat MHL should be applied to the prepared and primed substrate using a steel trowel. The product should be pressed onto the surface in thickness no greater than 12mm vertically, and in hot conditions, it may be necessary to reduce the build to 10mm to avoid sagging. Subsequent layers, if required, must be applied 24 hours after finishing the first layer. The final layer should be close trowelled to achieve the desired finish.

SpECcoat MHL is available in convenient packaging options:

• Supplied in 12 litre units.