 ® Mortar
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Lithomex |
® Sand Mastic™
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Takcoat™ |
NHL 2 |
NHL 3.5 |
NHL 5 |
Churn Brush |
Harling Trowel |
Lime Brushes |
Stucco Sprayer |
Drill Mixer |
St. Astier Lime Paints |
Silicate Paints and Stains |
St. Astier Lime Paint Swatch |
Master Conservator's Kit |
Graveyard Kit |
® Mortar Sample Color Kit |
Lithomex Sample Color Kit |
Sand Library (Mini) |
Master Stroke DVD's |
The Stonemason's Gospel According to Ian Cramb |
Goat Hair |
Black Soap |
Marble Dust |
Inclusion Simulator |
Slag Fleck |
| Mortars | Lime | Masonry Tools | Paints and Stains | Kits | DVD's/Books | Supplements |
®
Mortar... Just add water!
For doing repointing work, stucco and plaster work or for laying up masonry units with a significant CO2 savings over modern materials used for the same applications. Our on-line calculator gives the CO2 savings result you receive.
® Mortars, in any of the stock colors, are simply a prepared blend of binder/aggregate/pigments
to which you just add water, mix and go to work. Use it to repoint historic buildings, stucco
and build new buildings which are considered a Green Application and result in a desired
"Old World" Lime finish. It is as simple as mixing the mortar with water using a high torque
industrial electric drill and a rigid paddle attachment in five-gallon pail or using a mason's
paddle-style mortar mixer. The bag weight is 38.5 pounds.
NHL 2
NHL 2 Feebly Hydraulic lime is used for applications such as the consolidation of frail historic masonry.
It can be used where the highest amount of "free lime" is desired along with the greatest modulus of
elasticity for applications such as when fine sand is added to make interior finish coats of lime
plaster. It can be used to make very soft pointing mortars for repairing around friable historic masonry
where the wicking away of water from the brick or stone to the lime mortar joint and out to the
atmosphere is greatly encouraged. NHL 2 closely duplicates the material used for the majority of all
building history as it is like lime putty in many of its properties. Traditional lime putty sets with
air to fully cure over a six week period and it is referred to as an "Air Lime." NHL 2 sets with air and
water and cures in about four days and is referred to as a "Water Lime."
Cured NHL 2 is about as hard as a piece of chalkboard chalk. Mixes containing NHL 2 and 1-2% casein powder can make an injection grout that will flow into every interstice in cavities behind plaster if you are considering exterior historic stucco re-attachment to re-establish the bond of the back of the stucco to the masonry substrate. Grout injections with NHL 2 can also be used to stabilize masonry before repointing. Consider using casein as the catalyst to increase flow rather than pulverized fly ash (PFA) since PFA is a pozzolan. Tests done on lime mortars modified with PFA raise the question as to whether run-away strengths may continually increase with on going densification of the lime/PFA grout. Increased densification may possibly trap moisture in cavities filled with lime and PFA.
NHL 3.5
NHL 3.5 Moderately Hydraulic lime is 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 or interior plaster. It has a significantly
high "free lime" content that is responsible for self-healing mortars. The available free lime
goes into solution during subsequent rains and then re-crystallizes across open fissures as is
characteristic of historic pure lime mortars. NHL maintains a hexagonal plate crystal structure
which allows the plates to go in between each other for greater flexural ability. Portland cement
has a needle-like crystal structure which is brittle and must incorporate many control joints to
strategically control cracking. NHL 3.5 is designated as a moderately hydraulic lime and will reach
over 750 p.s.i. in six months when blended with 2-1/2 parts clean, sharp and well-graded sand.
Our stock ®
Mortar line is based on NHL 3.5 and 2-1/2 parts clean, sharp and well-graded sand.
Most all above grade interior and exterior brickwork and stonework built with modern cement is
recommended to be built using a Type N cement mortar, which reaches at least 750 p.s.i. in 28
days. Since modern designs call for structurally supporting steel or retaining walls made of
concrete or concrete blocks laid with strong cement mortars, NHL mortars can be used for all of
the veneer work, stucco and repointing where the old-world look, feel and properties of lime
mortar is desired.
NHL 5
NHL 5 Eminently Hydraulic lime is 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 such as Potassium Oxide, Sodium Oxide and tri-calcium aluminates. This
diminishes sulphate attack which normally happens in mortars prepared with Portland cement or
where white cement has been introduced into synthetically created hydraulic lime at the time of
manufacturing to ensure a hydraulic set. When Portland cement is present, you will find a high
percentage of tri-calcium aluminates which will react with the sulphates thus producing an
overall expansion and the eventual disintegration of the mortar or concrete especially in
marine environments.
St. Astier's Pure and Natural Hydraulic Lime is formed naturally by the presence of reactive silica which is caught up into the limestone deposit making it a truly pure naturally occurring siliceous hydraulic lime. Portland cement is an extreme form of "Hydraulic Lime", whereby it will also set with water and under water. Portland cement however is known to have many of the adverse chemical reactions as noted above, a brittle nature and releases tremendous amounts of Carbon Dioxide into the environment in its production over the equal amount of NHL 5. Specifiers should be aware of Argillaceous Hydraulic Limes where clay is naturally occurring or added to make these limes become hydraulic and what consequences may result from their inappropriate applications.
Lithomex
Specially formulated brick, stone and terracotta patching
material based on Natural Hydraulic Lime.
Repairing damaged stonework begins by identifying and understanding the reasons for decay. The usual reasons are excessive moisture, poor repairs, mechanical damage and natural decay. A major reason for damage is inappropriate repairs. Hard pointing or cement-based repair materials are very damaging to soft stone. Lithomex, a lime-based material, is flexible, porous, and lets the building breathe. Hard cement-based materials trap in moisture and salts. Patching stone can be very effective, affordable and can be reversible. The patching material must match the color and texture of the existing stone. It must adhere well, be breathable and have similar thermal expansion and weathering characteristics. Lithomex fulfills these requirements in most cases and, when applied by skilled craftsmen, will lend itself to a perfect match.
St. Astier Lime Paints
Although they date back thousands of years, some of the best examples today of lime paint are those pictured in scenic postcards of gleaming white and pastel colored villages, so abundant throughout the Mediterranean. Many architects and designers currently seek a return to these methods and products of the past. Lime paint changes and evolves as it slowly ages, giving buildings an appealing, provincial look. Additional coats can be added as time goes on, enhancing the depth of colors. Modern paints often seal in humidity, which later leads to peeling and other exterior damage to a building's surface. More like a stain than paint, lime paint is absorbed into the wall, penetrating the background. Once cured, the lime paint allows the surface to breathe, becoming a peel-free surface as it allows humidity to escape.
Silicate Paints and Stains
Silicate Dispersion Paint is also known as Inorganic Mineral Paint. It was developed in Germany in the late 1800s. Since then this type of paint has evolved into a first-class interior and exterior decorative, protective coating with out-standing technical quality features.
| Imported Churn Brush - $15.00 |
| Imported ”Harling” or ”Rough Casting” Trowel - $40.00 |
Imported Lime Paint Brushes
Imported from Italy, these are high quality natural bristle brushes that really hang on to thin viscosity paint such as limepaints. Available in either 6" or 4" sizes.
Lime Stucco Sprayer
The Tirolessa USA sprayer can be used for lime plaster, stucco, small scale shotcrete, papercrete, earthen mixes and more. It can be used for traditional plastering and many alternative building methods like strawbale, earth bag, insulated panels and thin shell/ferrocement.
Drill Mixer with Paddle
The CX100HF Collomix Mixer is a Heavy Duty 1000Watt machine with 1-speed high torque gear unit and variable speed control. Light-weight, compact and economical, but powerful and controllable with double grip two-hand handle it is ideal for mixing loads of up to 40 liters of heavily sanded mixes. Weight-reduced motor housing made of shatter-proof GFRP, a guarded handle and a mixing paddle with quick connect Hexafix® joint.
® Mortar Sample Color Kit
An ® Mortar kit has the 9
stock colors of ® Mortar
and 4 custom blends using our stock colors. The four example blends have some commonly found inclusions added to more closely
match some typical historic mortar joints. This is done as an example of how you could use the 9 stock colors to produce
hundreds of new shades and find ones specific to your various applications.
The Master Conservator's Kit
The Master Conservator’s Kit is a collection of LimeWorks.us products used for on site mock-ups, small repairs and color simulations of Brick, Stone, Terracotta and Lime Mortars when attentively designing appropriate and compatible restoration mortars for the conservation of historic masonry elements/structures.
The Graveyard Kit
The cost is $350 for the kit.
Workshops are scheduled with groups of 10 or more each buying a kit.
Lithomex Sample Color Kit
Contains 24 samples of tinted St. Astier Lithomex (Based on Natural Hydraulic Lime Binders)
Cost is $300.
Sand Library (Mini)
For more extensive museum quality repairs please consider ordering a Building
Conservator’s “Available Aggregate/Sand Library.” These are the
aggregates available for custom®
Mortar mixes intended to be used by the design of architectural conservators to more
closely simulate original sands and inclusions found in historic mortar formulations.
The cost is $40 (US) and includes shipping to the address you specify.
St. Astier Lime Paint Swatch
Our 24 stock lime paint colors are included in this swatch. Each color is a 100% accurate representation of its color. Each swatch is hand made with its true paint color.
® Sand Mastic™
Sand Mastic™ is a specially formulated dry powdered blend of Hydraulic lime and well-graded sands. Sand Mastic™ is mixed on-site with independently purchased raw and boiled linseed oils not included with the product. The mastic produces a flexible vertical and horizontal pointing mortar which can be used between the juncture of masonry and wood elements or where movement joints may occur. Cost is $90 for a 32 pound pail.
Takcoat™
Takcoat™ is a specially formulated interior one-coat plaster based on Hydraulic Lime, aggregates and VOC free additives. It is used as a transitional plaster coat over smooth substrates without the need for priming with sanded or acrylic primer, or as a one-coat lime finish over smooth substrates if properly applied. Takcoat™ is a neutral white or custom colored dry powdered plaster supplied in 38.5 lb pails to which mixing water is added on the job site.
Master Stroke DVD's
The Stonemason's Gospel
The Stonemason’s Gospel According to Ian Cramb is the second
book by Ian Cramb, released in 2011 this is a continuation of his
first book The Art of the Stonemason. Ian Cramb is a fifth generation stonemason from Scotland and currently lives in Pennsylvania. This book is a culmination of a lifetime dedicated to masonry.
Goat Hair
This very fine natural goat hair is used to increase tensile strength in plasters, 2 1/2 inches in length and is sold per 1/4 pound.
Black Soap
Vegetable-based, solvent-free and containing no artificial colorings, Marius Fabre black soap with olive oil is biodegradable and environmentally friendly. It is used in final coats of internal plaster to blend with the alkali lime and further saponify into a water resistant finish useful when doing Tadelakt work in shower areas and other high humidity conditions. Marius Fabre black soap used for finishing Tadelakt has already undergone a saponified transformation. However, since it is rich in fat, when its applied to the still fresh plaster the oils will blend into the water in the Ecologic® Mortar SCG (F) when it is used for plaster as the soap is worked into the surface. As the oils go deeper into the lime a second saponification occurs which results in a gloss and a breathable yet beautiful water resistant finish.
Inclusion Simulator
Inclusion Simulator is a general gradation of small granite flecks used to simulate oyster shell bits and other small bits of minerals sometimes found in historical mortars.
Marble Dust
Marble Dust is a fine gradation of marble used as the aggregate when re-creating fine butter-joint mortars made of pure lime with this limestone sand and to make a setting paste for setting monument blocks and mortar for true ashlar stonework.
Slag Fleck
Slag fleck is a small bit of metal oxide and silicon dioxide and is a vitreous by-product from smelting ore. It is sold in either an extra fine gradation or a fine gradation for use as a black inclusions into some pure lime/sand mortars.
Click on a product to see more info.
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