SMET NHL 2
SMET NHL 2 is a high-quality pure white, Natural Hydraulic Lime binder, produced under ISO 9001 and ISO 14001 management systems to EN 459-1. The feeble hydraulic strength development of SMET NHL 2 makes it suitable for producing lime mortars for masonry work, rendering, plastering base coats, and finish coats. Ideally suited for interior and exterior use on weak structures.
A feebly hydraulic lime binder for the production of mortars particularly suited for ecological new builds, restoration and preservation works. The product’s special composition allows the mortar product to breathe and also permits constant hygrometric exchange between the substrate and the environment.
Related Downloads
SMET and Haldane Fisher NHL Brochure
Benefits of SMET NHL 2
• Historical, gypsum and cement-free NHL
• Produces highly breathable mortars
• Highly sulphate resistant
• Low-stress hardening process
• Excellent subsequent hardening
• High water retention and elasticity in produced mortars
• Excellent bond properties to masonry
• EN 459-1
Pointing Brickwork
Binder: sand ratio: from 1: 2.5 depending on on-site and material conditions, joint size and sand grading. Always use well graded clean sands (3 – 4mm down to 75 microns).
Pointing Stonework
Production Of Mortars For Internal Plastering
Finish Coat (3-5mm) Binder: Sand ratio: 1: 2.5 Silica Sand
Attention
SMET NHL 2 must be mixed with clean, well-graded sands and clean water without additives. Do not mix or apply if the temperature is below +5ºC or over 30ºC. This product must not be mixed with gypsum or be applied to gypsum-based backgrounds. Avoid over-mixing, as this can adversely affect performance and strength. Material that has set must not be re-mixed. For interior applications, care must be taken when using heating systems. High or rapidly changing temperatures may affect the hydraulic setting reaction of the mortar/render and cause cracking and/or adhesion problems. Delay the implementation of heating systems for as long as possible and heat up interiors gradually. Other unfavorable conditions, such as overly wet backgrounds, low background temperatures, and low air temperatures can delay setting. During and after application, protect the mortar/render from adverse weather conditions, such as direct sunlight, strong winds, rain, and frost.
Technical Details for SMET NHL 2
| Unit | Average values* | Conformity to Standard | ||
| Physical properties | Mini | Maxi | ||
| Whiteness | Y | 70 | – | – |
| Fineness at 90 µ | % | 2.3 | – | 15 |
| Fineness at 200 µ | % | 0.4 | – | 2 |
| Expansion | mm | 0 | – | 2 |
| Bulk density | g/cm3 | 0.595 | – | – |
| Real density | g/cm3 | 2.64 | – | – |
| Blaine value | cm²/g | 12900 | – | – |
| Water content | % | 1.01 | – | 2 |
| Mechanical properties | ||||
| Beginning of set | min | 900 | 60 | – |
| End of set | min | 1233 | – | 1800 |
| Mechanical strength at 28 days | MPa | 3.1 | 2 | 7 |
| Chemical properties | ||||
| SO3 | % | 1.38 | – | 2 |
| Free lime content | % | 42.11 | 35 | – |
Related Projects
Packaging: Available in 25kg Bags.
PURCHASE DIRECT or VIA HALDANE FISHER
Also available in designation: SMET NHL 3.5 and SMET NHL 5