Roundtower Lime's NHL 2 is a feebly hydraulic Lime, suitable for internal and external use particularly where the masonry is a soft material. Although NHL 3.5 seems to have become the go to, faster setting alternative to traditional lime putty mortars, NHL 2 is arguably a better choice as a general purpose lime mortar, reserving NHL 3.5 for situations that need extra strength or protection. NHL 2 is the closest in strength, flexibility and breathability to a traditional Hydrated lime putty mortar. NHL (Natural Hydraulic Lime) is made from limestone which contains naturally occurring impurities. These impurities aid the setting time and hardness of the lime. Roundtower Lime contains no artificial additives included in the mix. Available in 25kg water resistant bags. NHL 2 is ideal for: Rendering and Plastering internal and external walls. Building and pointing, particularly for softer masonry such as limestone and sandstone. NHL will set in the presence of water whic...
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