Hydraulic lime is available in two forms: Natural Hydraulic Lime (NHL) and Pozzollanic Hydraulic Lime (PHL). Tarmac / Blue Circle Limelite products contain no additives, mineral additions or Portland cement and are quality assured to EN 459-1: Natural Hydraulic Limes with independent third-party certification. Natural hydraulic lime (NHL) is produced by heating (calcining) limestone that naturally contains clay and other impurities: no materials may be added to create the hydraulicity. We recommend this product for historic structures built with harder brick or stone. We recommend using this grade of NHL for a softer mortar project, including soft brickwork, sandstone, and more. A hydraulic lime is made from a limestone that either naturally contains or has artificially introduced some form of amorphous silica in the burning process. Lime gives the building the ability to flex and move wihtout the need for movement joints in many cases. For natural hydraulic lime (NHL) mortars, the lime is obtained from limestone naturally containing a sufficient percentage of silica and/or alumina. Suitable for … mortars and renders). A dry powder which requires mixing with water on site. Only logged in customers who have purchased this product may leave a review. Moderately hydraulic lime (NHL 3.5) is recommended for most historic structure elements that are exposed to extreme freeze-thaw activity and/or high moisture levels. They also make ideal mortars and plasters for historic preservation and green building. For more information on our NHL 2.0 (hydraulic lime mortar), please contact us today! Protect fresh mortar from frost, rain, direct sun and strong wind for a minimum of 48 hours depending on the time of year. Natural Hydraulic Lime (NHL) 3.5, by Roundtower , is a strong mortar option with all the flexibility that comes with natural lime. Natural lime has higher permeability in general, and allows for moisture to enter and escape freely – unlike Portland mortar, which locks in moisture and cracks over time. They can be used for a variety of applications for laying brickwork, bedding tiles, rendering and plastering. TransMineral USA, Inc. is proud to be a member of the following organizations and associations: Why Use Saint Astier® Pure and Natural Hydraulic Lime? Heritage Natural Hydraulic Lime Mortar – NHL 3.5 contains no cements, polymers, or admixes of any kind. It can be used for mortar/pointing/rendering of most masonry types. Hydraulic Lime (NHL) NATURAL HYDRAULIC LIME (NHL) is produced by burning and slaking limestone which is quarried with a proportion of silica and trace elements. Artificial hydraulic lime is produced by introducing specific types and quantities of additives to the source of lime during the burning process, or adding a pozzolan to non-hydraulic lime. BioLime® Natural Hydraulic Lime - NHL 3.5 BioLime® Natural Hydraulic Lime (NHL) 3.5 is designed for use in mortars and plasters for historical building restoration, quality building/construction and green building. Millions of tons have been used successfully on a global scale, in the most diverse climatic conditions. Buy Online, Ready to Mix, Just Add Water. NHL-3.5 is suitable for most exterior applications, while NHL-5 is designed for the toughest outdoor applications, such as floor slabs, underground work, and chimneys. Natural hydraulic lime, is an odourless powder, when mixed with sand and water it becomes a binder for building applications (e.g. It is the silica and trace elements that when burnt, become reactive with water and will cause an initial hydraulic set of the mortar … We recommend this product for historic structures built with harder brick or stone. The products have CE Certifications and are in … Heritage Hydraulic Lime Mortar NHL 3.5. In the world of NHL’s 3 different strengths are common: NHL 2.0- use for interior plasters/exterior stuccoes, old soft bricks and softer stone IE: sandstone etc. This product is not recommend for soft brick or for plaster or stucco. Hydraulic lime (HL) is a general term for varieties of lime (calcium oxide), which set through hydration.This contrasts with varieties of air lime slaked lime (calcium hydroxide), used to make lime mortar, the other common types of lime mortar, which set through carbonation (re-absorbing carbon dioxide (CO 2) from the air).. 100% Natural with Lime and a Blend of Aggregates, Consistent Quality. Natural hydraulic lime is a traditional building material that was widely used in Europe prior to the development of portland cement. Natural hydraulic lime can be used when speed is essential as it sets much quicker than a lime putty mortar. We offer this item currently in 55lbs (25kg) bags. Remember the mortar must be softer than the brick or stone it is matched with! Lime Green hydraulic lime mortars are available pre-packed in 25kg paper sacks for smaller jobs or can be delivered in 1000kg bulk bags as required. If playback doesn't begin shortly, try restarting your device. TransMineral, USA was established in 1997 by Michel Couvreux, an architect in France and the U.S. His familiarity with traditional “old world” building techniques and materials have been instrumental in their revitalization in the U.S. along with his stewardship of implanting Saint Astier® Natural Hydraulic Lime in the North American building sector. Saint Astier® Natural Hydraulic Lime's hemp construction product is called Batichanvre. However, the following mixing procedure can reduce this problem Our Natural Hydraulic Lime 3.5 is typically used with old harder bricks and stone. Lime Green Natural Mortar is a pigmented preblended (NHL) natural hydraulic lime mortar available in a large range of colours. Natural Hydraulic Lime mortar consists of two building materials, lime and sand. These ranges along with our mature lime putty plasters and mortars mean we can provide a lime to suit your project's needs. Its flexibility is perfect due to its softer properties than the building it is being adhered to. They also carry a CE Mark. Mix with sharp sand at a ratio of 2 1/2 parts of Mason’s sand to 1 part NHL. If you are working on a larger project, or a commercial development then we can mix mortars to your specific requirements and arrange silo storage for extra on-site convenience. This stronger mortar still has all the properties of natural lime products. Guide to mixing natural hydraulic lime mortar ‍ Mixing Guide. The less hydraulic a lime is, the more it will flex and move with a building. And add our pigments for even more color variations! Natural hydraulic and non-hydraulic lime mortars suitable for conservation and new build work. Natural Mortar. BioLime® Natural Hydraulic Lime (NHL) 2.0, 3.5 and BioLime® Natural Hydraulic Lime NHL 5.0 are designed for use in mortars and plasters for historical building restoration, quality building/construction and green building. Working temperatures should not be below 41 degrees F.  Dampen the wall before application. The more exposed to the elements a lime mortar or lime render is, the greater the need for a faster set and greater durability, to cope with harsher freeze thaw cycles. There are many other benefits for using it too. Installation Instructions For Lime Mortar, Helpful Guidelines When Working with Lime Products. Since this time over 200 million bags (25kg) have been manufactured and used for a wide range of projects from renovating churches and castles to new build construction. Click here to view Telling Natural Hydraulic Lime Brochure. Read the installation guide below and feel free to contact us with questions or a custom quote for colors. Avoid rapid drying due to high temperatures or strong winds using appropriate curing methods. Saint Astier® pure and natural hydraulic limes (NHL) have been in production for over 150 years. It is less flexible and less vapour permeable (breathable) than a lime putty mortar. Roundtower Natural Hydraulic Limes are natural products that contain no additives and are not blended. Contact us to get more information on our Natural Hydraulic Lime 3.5. is used extensively for limecrete flooring and is appropriate in areas of extreme exposure. The ratio of sand to binder varies depending on what job you are doing. Pure and natural hydraulic lime, moderately hydraulic, recommended when moderate strengths and better freeze-thaw resistance are required. Lafarge has a long and strong track record of producing Natural Hydraulic Lime stretching back to the mid 1800s. Apply over lime stucco, plaster, stone and brick. Natural Hydraulic Lime (NHL) products Saint Astier Natural Hydraulic Lime and derivative products have been produced by the same families since 1851. Optional add on: IMER MIX 360 iDust Grate $730.00, Optional Add On: Mix All 60 5 Pack of Buckets $200.00, Optional Add On: Mix All 60 Fine Mortar Mixing Paddle $89.00. Hydraulic in “Natural Hydraulic Lime (NHL)” means that it sets up underwater instead of carbonating like non-hydraulic lime putty mortars. Natural Hydraulic Lime (NHL) Saint Astier® pure and natural hydraulic limes (NHL) have been in production for over 150 years. Natural Hydraulic Lime (NHL) 3.5, by Roundtower , is a strong mortar option with all the flexibility that comes with natural lime. Natural Hydraulic Lime (NHL) 3.5 comes dry in 55 pound bags with no artificial additives. Our lime mortars are quality tested for ease of use & lasting results. Both are sold as dry bagged products. The characteristics of the raw materials are unique and consist of an undisturbed layer of calcareous rock infiltrated mainly by silica with only traces of other minerals. The characteristics of the raw materials are unique and consist of an undisturbed layer of calcareous rock infiltrated mainly by silica with only traces of other minerals. Natural Hydraulic Limes are commonly used as a replacement mortar in structures originally built of hot and non-hydraulic lime mortars due to their resilience to harsh conditions and normal weathering. We routinely prepare custom, authentic historic mortars for a wide variety of applications of all sizes as well as offering pure, natural historic binders for on-site matching by skilled tradespeople. Pure and natural hydraulic lime, feebly hydraulic, used when elasticity, low strength or high vapor exchange are desirable. Lime mortars mixed in drum mixers are prone to balling. Application Rate of Lime Mortars. 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