Roundtower NHL 5

Eminently Natural Hydraulic Lime - This material is used in areas of high exposure such as in marine environments, wall copings, lime concrete, etc.

Please contact us for pricing.

€ 16.70 EUR

Price ex VAT.

Or call +353 (0) 21 477 6677

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More Information

Natural Hydraulic Lime (NHL)is supplied in three European classifications, NHL 2 (feebly hydraulic), NHL 3.5 (moderately hydraulic) and NHL 5 (eminently hydraulic). These grades are based on compressive strength.

NHL has a number of qualities:

  • Lime reabsorbs a proportion of carbon dioxide (CO2) during curing and setting, thus offsetting part of CO2 created from production.
  • It allows buildings to 'breathe', and does not trap moisture inside the walls.
  • Lime mortars are very workable.
  • Lime allows masonry to be recycled at the end of its life and does not damage brick and stone.

Roundtower NHL 5 offers the maximum strength of the 3 classifications for NHL (Natural Hydraulic Lime) and as such we would advise caution as to exactly where it’s used.

While it can be used for most typical mortar applications especially those in more aggressive environments, and only then onto suitable, durable backgrounds; this is a binder with limitations in conservation. However, it will make an appropriate masonry mortar for marine applications including those within the tidal zone or flow in rivers etc.

Roundtower NHL 5 is used extensively for limecrete flooring.

Roundtower NHL will set in the presence of water which makes it ideal for use on exterior applications.

Roundtower NHL 5 is available in 25kg bags.

Each pallet contains 56 X 25kg bags.