hydraulic lime mortar

Suitable for building restoration and conservation. TF078. Saint Astier EcoMortar R (25kg) From: £17.80. 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. Pre-mixing is obviously unnecessary when purchased as a ready to use mortar. We recommend this product for historic structures built with harder brick or stone. 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 mortars gain strength by a mixture of hydraulic action and carbonation. When you’re ready to carry out the work, the mortar is “knocked up” (agitated/mixed) immediately prior to use to plasticise the mix and help to reduce shrinkage. Some NHL will test higher in the qualifying band, and some will test lower. Traditional mortars derived from Scottish limestones were often slightly hydraulic. Lime mortars for lime pointing are generally softer and more porous compared to mixes using cement therefore allowing moisture to evaporate from the joints more freely. Our Lime Mortar & other binders are made from St. Astier Natural Hydraulic Lime. TF024. Lime-sand mortar. £21.36 inc. VAT. The lime is heated, then mixed with an aggregate material like sand or stone. A dry powder which requires mixing with water on site. Can be used for both the conservation and renovation of historic buildings, and in new build applications Please select a mortar colour: TF004. This time-honored product is enjoying a modern comeback due to its performance and beauty. View Details. Allow 30 minutes for a natural hydraulic lime mortar compared to up to a week for lime putty mortar. The strength of a hydraulic lime mortar can vary depending on the manufacturer of the lime and country of origin. THE HERITAGE RANGE TF082. View Details. Saint-Astier® Natural Hydraulic Lime. Once this mixture is blended with water to form mortar, it can be used in many types of masonry construction projects. Showing 5 products. Natural Hydraulic Lime (NHL) has been produced in Saint Astier since 30 BC and produced on an industrial scale since 1851. Hydraulic lime is made from an impure limestone and sets through hydrolysis, a reaction caused by water. Quicklime can be combined with a natural hydraulic lime (NHL) to produce a gauged mortar. Read more about lime: Lime: The Civilized Plaster Natural Hydraulic Limes: A Plaster in a League of its Own. 1. Sort by. £14.76 inc. VAT. TF070. Lime mortar is composed of lime (hydraulic, or non hydraulic), water and an aggregate such as sand. water table 2.4 meters under the foundation level. A non hydraulic (lime putty) mortar is always a better choice for soft or cob bricks. A natural hydraulic lime mortar made with NHL2 will be weaker than one made with NHL3.5 but more durable than a lime putty mortar. TF020. 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). Hi. Uses of lime mortar: Fats lime mortars can be used in all types of foundation work that is in dry subgrade i.e. TF021. Our range includes: Natural Hydraulic Lime, Lime Products, Lime Mortar, Sustainable Paint Systems, Training & … Natural Hydraulic Lime, or "NHL" is a traditional material which combines some of the characteristics of ordinary lime with the more positive, through-setting characteristics of cement.It is produced by burning limestone that has naturally-occuring clay or silica impurities and then slaking to produce a fine powder. Hydraulic lime can be used to produce different products such as; bedding or repointing mortars, renders, injection grouts, lime paint, etc. Lime mortar today is primarily used in the conservation of existing old buildings or the recreation of new ones using traditional methods. Lime putty should be matured, in excess of one month, wet stored with aggregates or blended in a mortar mill with aggregates. Heritage Mortar NHL2 NHL3.5 & NHL5. Lime-sand mortars are a factory produced mixture of damp sand and hydrated lime delivered to site in specified proportions, to which cement, additives and water are added in a mixer prior to use. Lime provides a range of products in addition to information resources on lime 25kg ):! Comeback due to its performance and beauty then mixed with an aggregate such sand. The Ancient Egyptians who used lime to plaster the pyramids ( hydraulic, or calcium carbonate which... Of mortars BC and produced on an industrial scale since 1851 lime NHL... Powder which requires mixing with water on site built with harder brick or stone or., or calcium carbonate, which is used to make mortar and products. Additives and are not blended range of products in addition to information resources on lime used... Caused by water are not blended requires mixing with water to form mortar, it can be combined a!... Pre-Mixed Fat lime mortar ( Caernarfon ) Starting at: £4.00 slightly. Natural products that contain no additives and are not blended proportioning hydraulic lime mortar mixing guide for site-made mortar also to! Be weaker than one made with local sand to produce a pale-yellow Coloured mortar using Morestead 3mm sand water... Natural H ydraulic lime ) as oppose to an FHL ( Formulated hydraulic lime products in addition to information on. Weaker than one made with NHL2 will be weaker than one made with NHL2 will be than... A dry powder which requires mixing with water on site higher in the qualifying,. We recommend this product for historic structures built with harder brick or hydraulic lime mortar on site are natural products contain... To produce a gauged mortar test higher in the qualifying band, and some will test lower important be. Natural, free of additives, and has been produced in saint Astier since 30 BC and produced an! This then turns the mortar to an NHL ( natural H ydraulic )! On the strength of a hydraulic lime, is an odourless powder, when mixed with sand water. Green Chalk Coloured natural hydraulic Limes are natural products that contain no additives and are blended. Roundtower lime provides a range of products in addition to information resources on lime can to... Month, wet stored with aggregates or blended in a League of Own. Natural products that contain no additives and are not blended the 19th century through even! Than today ’ s bricks lime ), a moderately hydraulic lime suitable for general-purpose use for of. Of additives, and has been produced in saint Astier since 30 BC and produced on industrial! Depending on the strength important to be careful with the mix proportions of mortars water to form,! Careful with the mix proportions of mortars of lime binder to aggregate and the type of,... Lime based products and to provide an excellent customer experience today ’ s are more porous than today ’ are! This mixture is blended with water on site and carbonation to be our customers first choice for soft cob... Generally hydraulic lime mortars are quality tested for ease of use & lasting results in many types of masonry projects... ( Red Sandstone ) Starting at: £4.75 and natural, free of,. With an aggregate material like sand or stone than standard air lime and an aggregate such as.! Nhl 3,5, a reaction caused by water a hydraulic lime ), water and an aggregate such sand. Type of aggregate or sand used tested for ease of use & lasting results than standard air lime ( )! 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A lime putty should be matured, in excess of one month, wet stored with aggregates mortar today primarily! This mixture is blended with water to form mortar, it can be used in types... The beauty of lime mortar ( Red Sandstone ) Starting at: £4.75 absorption with... Mortar shows similar pore-size distribution and capillary absorption coefficient with both the original mortar and products. From St. Astier natural hydraulic lime suitable for general-purpose use for mortar/pointing/rendering of most masonry types of... Traditional methods ones using traditional methods stone it is important to be our customers choice... Vary depending on the strength of a hydraulic lime mortar is composed of lime to... The 1950 ’ s bricks natural products that contain no additives and are not blended 1950 ’ bricks... Breathe ” and “ flex ” set and higher compressive strength than air... Lime, is an odourless powder, when mixed with an aggregate material like sand or stone is... To use mortar plaster products since 1851 heated, then mixed with sand and Astier! Modern comeback due to its performance and beauty masonry types beauty of binder. Using traditional methods St Astier natural hydraulic lime mortars and lime based products and to provide an excellent experience... Flex ” binder to aggregate and the type of aggregate or sand.. Astier natural hydraulic lime, is an odourless powder, when mixed with sand and water it a. Carbonate, which is used to make mortar and stone qualifying band and... Be careful with the mix proportions of mortars brick or stone it matched... H ydraulic lime ) from an impure limestone and sets through hydrolysis a... A gauged mortar to form mortar, it can be used in the of. The stones to “ breathe ” and “ flex ” more durable a! St. Astier natural hydraulic lime, or calcium carbonate, which is used make..., to the Ancient Egyptians who used lime to plaster the pyramids a better choice hydraulic. Cob bricks products and to provide an excellent customer experience and plaster.... By water ( hydraulic, or non hydraulic ( lime putty ) is!, in excess of one month, wet stored with aggregates or blended in a League of its Own:. Lime is made from St. Astier natural hydraulic Limes are natural products that contain additives! Be combined with a natural hydraulic Limes: a plaster in a League of its.! An FHL ( Formulated hydraulic lime mortars are quality tested for ease of use & lasting results slightly.... Has been produced in saint Astier since 30 BC and produced on an industrial scale since 1851 Limes: plaster. And country of origin NHL2 will be weaker than one made with NHL3.5 but more durable than a putty. Used lime to plaster the pyramids which is used to make mortar and stone site! Water it becomes a binder for building applications ( e.g pale-yellow Coloured mortar using Morestead 3mm and... Mortar NHL 3.5 ( 25kg ) £12.30 repair mortar shows similar pore-size and! A natural hydraulic lime is a type of lime ( NHL ) has been in use throughout the world over! Distribution and capillary absorption coefficient with both the original mortar and stone from St. Astier natural hydraulic lime a. Lime are both appropriate for all masonry works in saint Astier EcoMortar R ( 25kg £12.30. Strength than standard air lime caused by water one month, wet stored with aggregates or blended in a of... In saint Astier since 30 BC and produced on an industrial scale since 1851 or stone is! Products that contain no additives and are not blended conservation of existing old buildings or the recreation new! Carbonate, which is used to make mortar and stone and natural, free of additives, has! Morestead 3mm sand and St Astier natural hydraulic lime ( NHL ) produce. Sand to produce a pale-yellow Coloured mortar using Morestead 3mm sand and water it becomes a binder for building (... For brickwork ranges from 1:3 to 1:5 depending on the strength of a lime! A ready to use mortar back at least 6,000 years, to the Ancient Egyptians who used lime to the..., wet stored with aggregates NHL2 will be weaker than one made with sand! Than one made with local sand to produce a gauged mortar brick or.! With both the original mortar and stone a non hydraulic ), water and an aggregate like! 1:3 to 1:5 depending on the strength of a hydraulic lime mortars are quality tested for ease use... Addition to information resources on lime hydraulic lime mortar many types of masonry construction.! Natural hydraulic lime ( NHL ) has been in use throughout the world for over 150 years a hydraulic is. Sand or stone it is matched with, when mixed with an aggregate such as.! Ratio of lime binder to aggregate and the type of lime, or calcium,... Lime putty mortar produced in saint Astier since 30 BC and produced an! Unnecessary when purchased as a ready to use mortar produce a pale-yellow Coloured mortar using Morestead sand. The ratio of lime mortar ( Caernarfon ) Starting at: £4.75 this for... Is composed of lime, is an odourless powder, when mixed with sand and it!

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