Ultralit Hard Extra is a water-based lithium densifier for hardening and dustproofing new or existing concrete floors, penetrating 2-8 mm into steel trowelled concrete and raising abrasion resistance by 30-60 %. The active lithium reacts with the concrete to form calcium silicate hydrate below the surface. Solids content 24 %, VOC below 20 g/L, specific gravity 1.24, pH 10. Shelf life 2 years unopened.
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