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Secil Natural Hydraulic Lime NHL5

  • Secil Natural Lime NHL5
  • Secil Natural Lime NHL5 was used to repoint this chimney
£12.00 (inc VAT) £10.00 (exc VAT)
Calculated at checkout

Secil Natural Hydraulic Lime NHL5

Secil Natural Lime NHL5 is a eminently hydraulic lime, but has lower breathability qualities.

Bulk discount - only £7.95 a bag when ordering a full pallet of 40 bags.

  • Used in marine environments where a quick set is beneficial and in areas where there is a high exposure to moisture, such as wall copings or chimneys, see photo above.
  • Can also used to create a limecrete floor.
  • Easy to use, powdered lime.

What is hydraulic lime?

Hydraulic lime sets by a process called hydrolysis, a reaction caused by water.  They are faster setting than non hydraulic limes and more durable, meaning they are well suited to use external use, especially in damp or exposed conditions.  There is more information about the differences between hydraulic lime and non hydraulic lime in our WHICH LIME? user guide.

Hydraulic lime is sold as a bagged powder, which means that it is mixed and applied in the same way as a modern cement. It is available in differing degrees of strength, classified as feeble hydraulic, moderately hydraulic and eminently hydraulic.

How do I mix hydraulic lime?

A standard drum mixer can be used to mix hydraulic lime, although a roller pan or paddle mixer is prefereable for larger projects.

In an empty mixer, add 1 part sand, followed by 1 part lime and then 2 parts sand.  Mix dry for at least 5 minutes.  Gradually mix in the water until the required consistency is reached. Mix for a further twenty minutes.  There are more details in our HOW TO MIX HYDRAULIC LIME user guide.


For plastering/rendering

A 25kg bag will cover 8m sq at 10mm

As a Finish Plaster

A 25kg bag will cover 26.5m sq @ 3mm

For Pointing

A 25kg bag will point 16m sq of brickwork.  A 25kg bag will repoint 10m sq of rubble.

For Laying Bricks

25kg will lay approximately 125 with 10mm joints




Standard delivery for this item costs £11.95.  For bulk orders, we'll deliver via a national pallet service.  For local postcodes SP and SO, we offer a special discount rate of £40+VAT per pallet.  Please call and order to recieve the benefit of this deal.  See our delivery charges for more details.

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Product Reviews

  1. great product - H L S Northwest, 25th Mar 2016

    great product

    Posted by H L S Northwest on 25th Mar 2016

    Excellent service and great product