Checklist for applying Green Building Technology
and how Natural Hydraulic Limes help to reach the designed goal


* Design an energy-efficient building: Designers should use high levels of insulation.

-Pure Natural Hydraulic Lime (NHL) mortars breathe and do not trap moisture in the wall. This improves insulation since it is easier to heat or cool a dry building. Values above 0.5 grams of pair per m2 per hour are acceptable. NHL mortars have between 0.55 to 0.75 (the value of concrete is about 0.15). Allowing structures to breathe reduces or eliminates condensation and rot and enhances the living environment and indoor air quality.

* Design buildings to use renewable energy: Passive solar heating, daylighting, and natural cooling can be incorporated cost-effectively into most buildings.

-Beautiful Pure and Natural Hydraulic lime paints in pastel colors reflect exterior sunlight keeping buildings cooler in hot sun conditions.

* Design for durability: To spread the environmental impacts of building over as long a period as possible, the structure must be durable. 

-Lime mortars have over 6000 years of success. Many ancient ruins still exist which were built with nothing more than soft and malleable lime mortars. They have the timeless beauty and a service life sought after for new Green buildings.

* Design for future reuse and adaptability: Make the structure adaptable to other uses, and choose materials and components that can be reused or recycled.

-Material used in construction with NHL may be reused or recycled. In addition, the NHL mortar itself may be recycled in a number of ways, such as an aggregate for new lime mortars, fertilizer, (NHL is calcium carbonate), or it can be used for water purification or hazardous waste treatment.

* Avoid potential health hazards: radon, mold, pesticides: Follow recommended practices to minimize radon entry into the building and provide for future mitigation if necessary. Provide detailing that will avoid moisture problems, which could cause mold and mildew growth. Design insect-resistant detailing that will require minimal use of pesticides.

-St Astier products have received the LABELVERT EXCELL or "Green Label" in France. This label guarantees the total absence of contaminants and any risk of pollution. It also authorizes the use of this product in chemically sensitive areas such as living spaces, wine cellars, etc. The total absence of aromatic or polycyclic elements in NHL are proof of its purity. The total absence of Chromium VI in St. Astier NHL, eliminates the risk of skin cancer associated with clinker cement.

* Renovate older buildings: Conscientiously renovating existing buildings is the most sustainable construction.

-Natural Hydraulic Limes are compatible with the lime mortars historically used without introducing new reasons for incompatibility and pre-mature failure.

* Create community: Development patterns can either inhibit or contribute to the establishment of strong communities and neighborhoods. Creation of cohesive communities should be a high priority.

-Restoring historic masonry buildings with the appropriate NHL mortars instead of tearing them down maintains a sense of community and regional cultural identity.

* Avoid ozone-depleting chemicals in mechanical equipment and insulation: CFCs have been phased out, but their primary replacements--HCFCs--also damage the ozone layer and should be avoided where possible. Avoid foam insulation made with HCFCs. Reclaim CFCs when servicing or disposing of equipment. 

-Natural Hydraulic Lime stucco vs. elastomeric synthetic stuccos and paint reduces ozone depletion in manufacturing.

* Use durable products and materials: Because manufacturing is very energy-intensive, a product that lasts longer or requires less maintenance usually saves energy. Durable products also contribute less to our solid waste problems.

-The correct lime and sand mortar mix has always been very durable and cost effective by achieving its long service life for the buildings they serve. When new mortars with duplicate properties as that of old materials are used to repair and repoint buildings, or to build new ones, then the final life-cycle assessment of the replacement materials will be as equally impressive as that of the historically time-proven materials.

* Choose low-maintenance building materials: Where possible, select building materials that will require little maintenance (painting, retreatment, waterproofing, etc.), or whose maintenance will have minimal environmental impact.

-Lime paints are mineral coatings which wear down over time rather than peel off like paint. Many historical structures throughout the world have not had any maintenance yet the patina of even worn finishes prove that they take on a life of their own and enhance a building even when not renewed.

* Choose building materials with low embodied energy: Heavily processed or manufactured products and materials are usually more energy intensive. As long as durability and performance will not be sacrificed, choose low-embodied-energy materials.

-St. Astier NHL saves considerable amounts of CO2 emissions over Ordinary Portland Cement (OPC)

* Buy locally produced building materials: Transportation is costly in both energy use and pollution generation. Look for locally produced materials. Local hardwoods, for example, are preferable to tropical woods.

-St Astier NHL is from France but even when calculating the fuel consumption for transportation from France it is still over 75% more Green than using Ordinary Portland Cement (OPC).

* Avoid materials that will off gas pollutants: Solvent-based finishes, adhesives, carpeting, particleboard, and many other building products release formaldehyde and volatile organic compounds (VOCs) into the air. These chemicals can affect workers' and occupants' health as well as contribute to smog and ground-level ozone pollution outside.

-St. Astier Lime paints release zero VOCs into the air.

Applicable *Main Points adapted from greenbuilding.com checklist for Green Building.


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