Saint-Astier® NHL 2 Natural Hydraulic Lime 25Kg Bag

Saint-Astier® NHL 5 is a 100% Natural Hydraulic Lime and is the strongest in strength of the three classifications for NHL. Available in a 25kg bag.

NHL 5 offers the maximum strength of the three classifications for NHL.

Ideal for limecrete, marine applications or applications in aggressive environments where durability is essential, such as wall capping, underground works or chimney flaunching. We advise caution for its use in repairing traditionally constructed buildings. We often recommend using St Astier NHL 2 or weaker, which is often more appropriate in technical performance for weathered or softer substrates.

• Contains no additives
• 100% pure Natural Hydraulic Lime
• White in colour
• High mechanical performance
• Ideal for exposed areas
• Resistant to sulphates

Suitable for pointing, rendering, limecrete, grouting, capping, mass wall building, foundation, marine applications, chimney stacks and new build masonry. Before starting, always try on a small test area.

Mix with clean and well-graded sand at a mix ratio from 1:1.5 to 1:3, depending on the application, background conditions, size of the joint or the fineness of the sand. View our range of sands for lime pointing, rendering and plastering.

Do not use in temperatures below 5°C or above 30°C. Dampen substrates the day before and prior to application, allowing the surface water to be reabsorbed. Avoid rapid drying due to high temperatures, direct sunlight or strong winds by covering and curing with a light water mist as necessary.

We always advise following best practices for curing and protecting fresh lime mortars and renders from direct sunlight and wind using hessian sheeting, which acts as a barrier between the freshly applied lime and the environment.