Hydraulic Lime Mortars are available in various strengths and are a blend of natural hydraulic lime (NHL), high calcium lime (CL90), well -graded aggregates and pigments (if required or specified); they do not contain patented cements. All mortars are factory batched, ensuring quality and consistency of the dry mortar product.
NHL 3.5 & NHL 5 Moderately Hydraulic Lime Mortar can be used for permeable masonry materials which is mainly used above ground. Generally, it is used for bricks, facings, commons, blockwork, bedding, sandstone, limestone, flint, terracotta, cavity and solid walls, pointing and repointing.
A drum mixer can be used and will provide adequate mixing. Water must be clean and free from organic matter – tap water is recommended. Depending on the consistency of the mix, approximately 4-5 litres of water are required for each 25kg bag of dry material. Following trials on site to establish workability and colour, record water addition and maintain throughout the mixing period. Measure dosage of water per 25kg bag. Please contact us for further information.