Product Details Description Saint-Astier® Natural Hydraulic Lime Saint-Astier® Natural Hydraulic Lime (NHL) is an industry-standard used for historic restoration mortar, stucco, and Plaster with no harmful portland cement present or required. Saint-Astier® NHL is pure and natural, free of additives, and has been in use throughout the world for over 150 years. To learn more about Saint-Astier® visit StAstier.com. Why SAINT-ASTIER® NHL? Click here to get the PDF. Need Pre-mixed material? Check out our premixed Ecologic Mortar, based on Saint Astier Natural Hydraulic Lime. Need something more custom? We do custom simulations for mortar, brick, stone, terracotta, and paint. Visit “Ordering a Custom Formulated Simulation” to learn more. Benefits SlideCompatible with historic masonryCompatible with historic masonryCompatible with historic masonryHigh Vapor PermeabilityImmune to Salts and SulfatesImmune to Salts and SulfatesNHL 3.5 will reach 750 PSIContains No Portland CementContains No Portland CementLow modulus of ElasticityLow Carbon FootprintAllows Reuse of MasonryPure and Naturally OccuringShips Nationwide Benefits Maintaining good vapor permeability in the exterior envelope of an historic building will allow the historic masonry units themselves to have an even longer service life thus keeping them in a better state of conservation. Vapor permeability is also key to the longevity of new sustainable construction projects. Saint-Astier® NHL has low capillarity and high vapor permeability. Independent studies have shown Saint-Astier® NHL to have a higher level of vapor permeability than all mortar mixes containing any amount of Portland cement. This remains true while achieving comparable strengths for many applications without the need to add Portland cement or a Pozzolan to achieve proper and effective mix designs. Immune to Salts and Sulfates Saint-Astier® NHL is completely immune to sulfates and salts. Alkali-silica reactions, common with Portland cement mortars do not take place with Saint-Astier Natural Hydraulic Limes. This is due to the absence of tri-calcium aluminates only created in high temperature fired kilns which are required for the production of Portland Cement. Modulus of Elasticity Saint-Astier® NHL has an excellent modulus of elasticity. Unlike Portland cement-based mortars, Saint-Astier® NHL mortars limit the requirements for strategically placed control joints in walls. The breathability of mortars made with Saint-Astier® NHL also reduces, if not eliminating, the requirement for weep vents in curtain or veneer walls. NHL 2 Description & Coverage NHL 2 (Natural Hydraulic Lime) Feebly Hydraulic lime is used where the highest amount of “free lime” is desired along with the greatest modulus of elasticity, low strength or high vapor exchange. It sets with air and water and cures in about four days Very soft pointing mortars used for repairing around friable historic masonry NHL 2 Bag Coverage for Plaster and Stucco Ratio 1:2 1:2.5 Thickness Coverage ft2 1/8″ 269 324 1/4″ 134 162 3/8″ 89 108 1/2″ 67 81 3/4″ 44 54 1″ 33 40 NHL 3.5 Description & Coverage NHL 3.5 (Natural Hydraulic Lime) Moderately Hydraulic lime is recommended for use when moderate strengths and better freeze-thaw resistance is required. Used for applications such as laying or repointing brick, stone and terra cotta units even in extreme freeze-thaw climate cycles. It can be used to make scratch, brown and finish coats of exterior stucco Quick Estimation Numbers One bag of NHL 3.5 mixed with 2-1/2 parts sand will: Lay about 160 standard brick Repoint about 300 square feet of standard brick joints @ 3/8″ wide and 3/4″ deep Repoint about 900 lineal feet of standard brick joints @ 3/8″ wide and 3/4″ deep Lay about 40 standard 8″ x 8″ x 16″ block Stucco about 50 square feet @ 3/4″ thick Require 150 bags for 1000 square feet of mass stone wall laying at a depth of 24″ Repoint about 50 square feet of rubble stone wall @ 1″ wide and 1-1/4″ deep NHL 3.5 Bag Coverage for Plaster and Stucco Ratio 1:2 1:2.5 Thickness Coverage ft2 1/8″ 203 221 1/4″ 101 110 3/8″ 67 73 1/2″ 50 55 3/4″ 33 36 1″ 25 27 NHL 5 Description & Coverage NHL 5 (Natural Hydraulic Lime) Eminently Hydraulic lime is specified when strength and high freeze-thaw resistance are necessary. Used for applications such as building or repairing wall head copings, pointing and parging the water table or foundation of a building and making lime concrete. Sea-bearing walls can be built and repaired with NHL 5 since it has only trace amounts of soluble salts. NHL 5 Bag Coverage for Plaster and Stucco Ratio 1:2 1:2.5 Thickness Coverage ft2 1/8″ 203 230 1/4″ 101 115 3/8″ 67 76 1/2″ 50 57 3/4″ 33 38 1″ 25 28 Submittal and Installation Data Application and Product Data NHL 2 NHL 3.5 NHL 5 Technical Specifications Ecologic™ and Saint-Astier® Stucco and Plaster Comparison Chart The 5 Most Important Steps Los Cinco Pasos Más Importantes Para la Preparación del Producto NHL Breathability Physical & Mechanical Data NHL Reworking Sea Water Resistance 24 Month Tests Saint-Astier Datasheets NHL 2 NHL 3.5 NHL 5 Product Leaflet Specifications Masonry Cladding Safety Data Sheets (SDS) NHL 2 NHL 3.5 NHL 5 NHL Quality Control General Installation Guidelines Guidelines More info at stastier.com Working with Mortars in Cold Weather Videos Reworking Lime Mortar after 24hrs Is it Lime or Cement Mortar? Mix Lime Mortar…Like A This! The Impact of Natural Hydraulic Mortars Blogs History of Lime Mortar Lime Mortar vs Portland Cement St. Astier Natural Hydraulic Lime for Historic Restoration, Conservation and New Build Projects Another Successful Straw Bale Building with Natural Hydraulic Lime Plaster – Little Rock Arkansas Israel Nature and Parks Authority The Conservation of the Archeological Parks The use of St. Astier Natural Hydraulic Limes How do Natural Hydraulic Lime Mortars Compare to Common Type-O Mortars Containing Portland Cement? Historic Brownstone Restoration With Breathable Natural Hydraulic Lime The Mysterious Newport Tower, Restored Using Natural Hydraulic Lime What Sand Should I Use With Natural Hydraulic Lime For Repointing My Building? FAQ Friday One quick question on Natural Hydraulic Lime, FAQ Friday Differences Between Repointing with Natural Hydraulic Lime (NHL) Mortars vs. Cement-Based Mortars FAQ Workshops ARTisAn Objective® Workshop MAS-01 Basics of Repointing Brick & Stone Using Lime Mortar ARTisAn Objective – Workshop MAS-02 – Repointing Special Joint Profiles Using Lime Mortar Frequently Bought Together Add to cart Quick view Double Scutch Hammer $65.00 Add to cart Quick view Churn Brush Rated 4.63 out of 5 $20.00 Select options Quick view ARTisAn Objective® Workshop MAS-01 Basics of Repointing Brick & Stone Using Lime Mortar Rated 5.00 out of 5 From: $525.00 Add to cart Quick view Diamond Shape Joint Knife $8.00 Add to cart Quick view 20 oz. Cush Grip Mason Brick Hammer $85.00 Add to cart Quick view 4-3/4″ x 1-3/4″ Cross Joint Trowel with Wood Handle Rated 5.00 out of 5 $19.00 Add to cart Quick view Hand Flat Wirebroom 12in 1/2 Spacing $26.00 Sold out Read more Quick view 6 3⁄4 in x 3⁄8 Pointing Slicker – Wood handle $19.00 Sold out Read more Quick view 6 3⁄4 in x 1⁄2 Pointing Slicker – Wood handle Rated 5.00 out of 5 $19.00 Add to cart Quick view Toothed Bush Hammer $130.00 Add to cart Quick view 7″ x 3 1/4 Gauging trowel w/ wood handle $30.00 Add to cart Quick view 1/4 in x 3/8 Flat Combination Slicker $12.00 Add to cart Quick view 1/2″ x 5/8″ Flat Combination Slicker (35) $12.00 Add to cart Quick view Bamboo Level – 24″ Aluminum Bound $60.00 Add to cart Quick view Collomix High Speed Rotating Mixer – AOX-S $3,700.00 Add to cart Quick view Concave Stone Beader – 5/8″ x 3/4″ $15.50 Add to cart Quick view 5×2″ Margin Trowel $20.00 Add to cart Quick view Concave Stone Beader – 3/8″ x 1/2″ $11.00 Add to cart Quick view Ecologic™ Sand Blend Coarse (G) $28.00 Add to cart Quick view Ecologic™ Sand Blend Fine (F) $28.00
