The renewed scientific interest and analysis and the life cycle of our historic buildings are proof of the exceptional qualities of lime mortars. Read the installation guide below and feel free to contact us with questions or a custom quote for colors. Lime gives the building the ability to flex and move wihtout the need for movement joints in many cases. © 2020 lancasterlimeworks.com | All rights reserved. NHL 5.0 is the hardest of the NHL’s, we recommend caution where it is used. TransMineral USA, Inc. is proud to be a member of the following organizations and associations: Why Use Saint Astier® Pure and Natural Hydraulic Lime? Lime Green Natural Mortar is a pigmented preblended (NHL) natural hydraulic lime mortar available in a large range of colours. Suitable for … Natural hydraulic lime, is an odourless powder, when mixed with sand and water it becomes a binder for building applications (e.g. 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. 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. Pure and natural hydraulic lime, feebly hydraulic, used when elasticity, low strength or high vapor exchange are desirable. 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. Avoid rapid drying due to high temperatures or strong winds using appropriate curing methods. This article seeks to explain the “mystery” of the differing lime products and makes a comparison of lime and cement based binders. They also carry a CE Mark. It is the silica and trace elements that when burnt, become reactive with water and will cause an initial hydraulic set of the mortar … If playback doesn't begin shortly, try restarting your device. is used extensively for limecrete flooring and is appropriate in areas of extreme exposure. Lafarge has a long and strong track record of producing Natural Hydraulic Lime stretching back to the mid 1800s. We recommend this product for historic structures built with harder brick or stone. 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).. We recommend this product for historic structures built with harder brick or stone. Natural Hydraulic Lime (NHL) products Saint Astier Natural Hydraulic Lime and derivative products have been produced by the same families since 1851. a timesaving, lightweight, portable, powerful little mixer for the DIYer or contractor to get that job done. Remember the mortar must be softer than the brick or stone it is matched with! They can be used for a variety of applications for laying brickwork, bedding tiles, rendering and plastering. 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. We offer this item currently in 55lbs (25kg) bags. Pure and natural hydraulic lime, eminently hydraulic, specified when strength and high freeze-thaw resistance are necessary. 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. Installation Instructions For Lime Mortar, Helpful Guidelines When Working with Lime Products. NHL mortar is a strong yet more permeable and flexible mortar than modern portland cement mortars, providing outstanding protection of masonry units … Roundtower Natural Hydraulic Limes are natural products that contain no additives and are not blended. However, the following mixing procedure can reduce this problem These ranges along with our mature lime putty plasters and mortars mean we can provide a lime to suit your project's needs. 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. mortars and renders). Roundtower Limecrete Flooring System Roundtower's Limecrete Floor System was initially designed to be used in the renovation of Cor Castle over 20 years ago. 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. Hydraulic in “Natural Hydraulic Lime (NHL)” means that it sets up underwater instead of carbonating like non-hydraulic lime putty mortars. Remember the mortar must be softer than the brick or stone it is matched with! 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. 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. The products have CE Certifications and are in … 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. Mix with sharp sand at a ratio of 2 1/2 parts of Mason’s sand to 1 part NHL. Natural Mortar. Heritage Natural Hydraulic Lime Mortar – NHL 3.5 contains no cements, polymers, or admixes of any kind. 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. 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. Lime mortars mixed in drum mixers are prone to balling. NHL’s will set in the presence of water which makes it ideal for use in exterior applications. Our lime mortars are quality tested for ease of use & lasting results. Contact us to get more information on our Natural Hydraulic Lime 3.5. Click here to view Telling Natural Hydraulic Lime Brochure. We recommend using this grade of NHL for a softer mortar project, including soft brickwork, sandstone, and more. The ratio of sand to binder varies depending on what job you are doing. Our NHL 2.0 (hydraulic lime mortar) is typically used for interior/exterior plastering, stucco, and re-pointing older soft bricks. Only logged in customers who have purchased this product may leave a review. Application rate of lime mortars. Remember the color of the sand will largely determine the color of the mortar! Our Lime Mortar & other binders are made from Saint-Astier Natural Hydraulic Lime. A dry powder which requires mixing with water on site. Prefer to watch rather than read? For more information on our NHL 2.0 (hydraulic lime mortar), please contact us today! And add our pigments for even more color variations! Its flexibility is perfect due to its softer properties than the building it is being adhered to. Heritage Hydraulic Lime Mortar NHL 3.5. For natural hydraulic lime (NHL) mortars, the lime is obtained from limestone naturally containing a sufficient percentage of silica and/or alumina. It is less flexible and less vapour permeable (breathable) than a lime putty mortar. 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) Saint Astier® pure and natural hydraulic limes (NHL) have been in production for over 150 years. Millions of tons have been used successfully on a global scale, in the most diverse climatic conditions. Application Rate of Lime Mortars. NHL mortar is produced using limestone that contains naturally occurring impurities (pozzollans) such as clay and … 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. This product is not recommend for soft brick or for plaster or stucco. Buy Online, Ready to Mix, Just Add Water. The less hydraulic a lime is, the more it will flex and move with a building. There are three European classifications: NHL 2, NHL 3.5 and NHL 5 based on the compressive strength of laboratory mortars after 28 days. 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. Pure and natural hydraulic lime, moderately hydraulic, recommended when moderate strengths and better freeze-thaw resistance are required. Natural hydraulic lime can be used when speed is essential as it sets much quicker than a lime putty mortar. Natural hydraulic lime Type 2 (NHL-2) is designed for interior applications and some exterior uses where the mortar will be protected from moisture. 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. Millions of tons have been used successfully on a global scale, in the most diverse climatic conditions. There are many other benefits for using it too. 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. NHL 2 Lime Mortar Internal Work or Soft Masonry Flexible … This product is currently available in 55lbs (25kg) bags. It can be used for mortar/pointing/rendering of most masonry types. Apply over lime stucco, plaster, stone and brick. 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. 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. Natural Hydraulic Lime (NHL) 3.5 comes dry in 55 pound bags with no artificial additives. 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. Saint Astier® pure and natural hydraulic limes (NHL) have been in production for over 150 years. HYDRAULIC LIME MORTAR What are the benefits? Working temperatures should not be below 41 degrees F.  Dampen the wall before application. They also make ideal mortars and plasters for historic preservation and green building. Hydraulic lime is available in two forms: Natural Hydraulic Lime (NHL) and Pozzollanic Hydraulic Lime (PHL). Natural Hydraulic Lime mortar consists of two building materials, lime and sand. Natural Hydraulic Lime (NHL) 3.5, by Roundtower , is a strong mortar option with all the flexibility that comes with natural lime. Reasons for choosing to repoint grade two listed buildings using lime putty instead of natural hydraulic lime Natural hydraulic lime or NHL, comes from limestone that has natural impurities of clay and other minerals. Natural hydraulic and non-hydraulic lime mortars suitable for conservation and new build work. is a mid size powerful mixer that can handle all your mixing needs! ‍ Sand Selection. This amorphous or “free” silica fuses with some of the quicklime to form a clinker, a cementitious compound. 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. Guide to mixing natural hydraulic lime mortar ‍ Mixing Guide. It is pure white but is tintable. Our Natural Hydraulic Lime 3.5 is typically used with old harder bricks and stone. Lancaster Lime Works White Limewash is a perfect blend of high calcium lime that’s easy to use. Natural hydraulic lime is used to make breathable durable lime mortars, lime plasters and lime renders for historic buildings and new buildings. 100% Natural with Lime and a Blend of Aggregates, Consistent Quality. Protect fresh mortar from frost, rain, direct sun and strong wind for a minimum of 48 hours depending on the time of year. Saint Astier® Natural Hydraulic Lime's hemp construction product is called Batichanvre. 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 lime NHL 2 is the weakest strength natural hydraulic lime, suitable for most lime mortars, lime plasters and lime renders. How much movement will the mortar have to cope with? This stronger mortar still has all the properties of natural lime products. 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