Saint Astier Lime Plasters and Finishes, NHL 5 – 66 lbs

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7 in stock (can be backordered)

Product Description

This 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 or repaired with NHL 5 since it is immune to sulphate attack. Sulphate attack normally occurs in mortar prepared with OPC or when white cement has been introduced into synthetically created hydraulic lime to ensure a hydraulic set. The high percentage of tri-calcium aluminates found in OPC negatively reacts with the sulphates. This reaction produces an overall expansion and eventual disintegration of the mortar or concrete, especially in marine environments.