SMET NHL 3.5 - Natural hydraulic lime binder
Verified by manufacturer 1 month ago
Moderately natural hydraulic lime binder.
Application
Particularly suited for ecological new build, restoration and preservation works.
Description
SMET NHL 3.5 is a high quality pure natural hydraulic lime binder, produced under an ISO 9001 and ISO 14001 quality system to BS EN 459-1. The moderate hydraulic strength development of SMET NHL 3.5 makes it suitable for producing lime mortars for masonry work, rendering, plastering base coats and limecrete. The product’s special composition allows the mortar product to breathe and also permits constant hygrometric exchange between the substrate and the environment.
Features and benefits:
- Historical, gypsum and cement-free natural hydraulic lime (NHL).
- Produces highly breathable mortars.
- Highly sulfate resistant.
- Low-stress hardening process.
- Excellent subsequent hardening.
- High water retention and elasticity in produced mortars.
- Excellent bond properties to masonry.
- Fineness at 90 μ: 4%.
- Fineness at 200 μ: 0.7%.
- Free lime content: Approx. 26.8%.
- SO3: Approx. 1.22%.
- EN 459-1.
- CE marked.
General information
Color | White |
Material | Hydraulic lime |
Uniclass | |
CAWS | M20/58 Lime:sand roughcast (harling) M20/57 Lime:sand M20/320 Lime:sand roughcast (harling) M20/310 Lime:sand |
Product range |
Specification data - Hydraulic limes
Classification data | |
Type of hydraulic lime | Natural hydraulic lime. |
Standard | To BS EN 459-1. |
Designation | NHL 3.5. |
Mechanical strength | 4.25 MPa (approximately). Manufacturer guidance28 days |
Expansion | 0.5 mm. |
Density | Bulk: 0.8 g/cm³; Real: 2.71 g/cm³. |
Water | Free water content: 0.87%. |
Sustainability data
Contains Red List materials | No |
Country of material origin | France |
Country of product manufacture | France |
Manufacturing plant location | |
Material | Hydraulic lime |
A1–A3 ('Production stage') | Embodied carbon as defined in BS EN 15804 |
Normalized unit | |
Declared unit | 684 kg CO₂ eq/unit Self-declared Manufacturer guidanceDeclared unit of 'One tonne'. |
Literature
Literature type
TDS SMET NHL 3.5
SMET Natural Hydraulic Lime Brochure
ASBP Membership Certificate_SMET_valid until May 26
BSI Certificate of Registration ISO 14001:2015
BSI Certificate of Registration ISO 45001:2018
BSI Certificate of Registration ISO 9001:2015
Corporate and Social Responsibility Statement Policy | Smet Building Products Ltd
Responsible Sourcing Policy | Smet Building Products Ltd
BES 6001 Responsible Sourcing of Products
SMET & Haldane Fisher - Natural Hydraulic Lime Brochure
Case studies
Donegal Parish Church Restoration | Rainey Restoration Ltd | SMET NHL 3.5
Dechomet Cemetery Moneyslane Restoration and repairs | Rainey Restoration Ltd | SMET NHL 3.5
SMET NHL 3.5 | Ardglass Golf Club | Cottage Internal Repointing & Restoration
Seamus Heaney Centre | SMET bauprocalc Lime Based Plaster | Queen’s University Belfast
SMET sustainable mortars | C19th Former National School restored
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