Mortars made with Saint-Astier NHL binders achieve:
The available lime provides this quality. A timely light water mist over Healing a minor shrinkage mark will help to heal it.
A factor in building without construction joints. Important in diminishing shrinkage and cracking. Allows for minor movements.
Good vapour exchange qualities allow for condensation dispersion. No rot. Great benefits to the living environment.
Resistance to salts
The absence of any potentially damaging addition (i.e. gypsum or to salts cement) make sulphate attack, alkali-silica reactions impossible. Existing salts in the building fabric will pass through and eventually can be washed off. Excellent performance in marine environment.
Suitable Compressive Strength
Unlike cement or cementitious mixes (1:1:6 etc..) the compressive Compressive strength will be achieved gradually, allowing for movement. The Strength availability of a range will permit the making of mortars with the required strength without having to add or blend.
Resistance to weather
Early setting will provide quicker protection from adverse weather.
Resistance to Bacteria and vegetable growth
The alkalinity of the binder does not favor their development.
The porosity of the mortar present good insulation values.
The whiteness of the NHL binders will reproduce the colour of the aggregate used.
All St. Astier mortars can be reworked (8 – 24 hours), reducing waste and increasing work speed. This is due to the absence of cement, gypsum or pozzolans.
Materials built with NHL mortars can be reused.
Probably the most Eco friendly contribution of using limes. Damaging CO2 is re-absorbed during the carbonation of the free lime.