ST ASTIER NHL 2 / 3.5 / 5

Name: ST ASTIER NHL 2 / 3.5 / 5
SKU: 3365
Availability: InStock

£15.00 – £480.00

uses
Building / Brick or Stone Laying
Rendering
Plastering
Internal & External Use
Eco Credentials

Natural Hydraulic Lime is a lime based product so should produce less CO2 emissions during production than Portland Cement. We sell NHL as a convenience to our customers, making Ecolime the only web site that you need to visit.

Grade
Packaging	Clear

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SKU: N/A Category: Natural Hydraulic Limes Tags: lime, Limecrete, Mortar, NHL, plaster, render

St Astier NHL 2, has natural clay content which allows it to set under water – hence the name “Hydraulic Lime”. The grading system reflects the active clay content ratios within each of the three materials, NHL 2 being the weakest followed by NHL 3.5 and then NHL 5 being the hardest product. The 3 grades of NHL are described as Feebly, Moderately & Eminently Hydraulic Limes.

These gradings reflect the diminished breath-ability of the finished product.

Strength and frost resistance can also be varied by altering the mix ratio, typically the ratios will range between 1 lime : 1·5 Sand to 1 lime : 3 Sand (by volume) Generally exterior hydraulic lime mortars will be 1 lime : 2 or 2·5 Sand. With cement mortars as well, mix ratios determine the strength and these are detailed in BS 5628. Type I mortar being the strongest and Type v the weakest.