Buildhub MasonRite Masonry Cement 25kg

The Buildhub MasonRite Masonry Cement takes the guesswork out of site mortar production by incorporating carefully proportioned hydrated lime and air-entraining agent directly into the cement, producing consistent, high-quality masonry mortars simply by adding sand and water at the site. This factory-blended approach eliminates the variability in mortar properties that results from inconsistent site batching of separate cement, lime, and plasticiser additions — a variability that can lead to mortars that are either too stiff and strong (risking shrinkage cracking and thermal movement damage to masonry) or too weak and crumbly (compromising durability and water resistance).

The incorporated lime component provides MasonRite mortars with their characteristic workability and plasticity — the long-lasting fat, buttery consistency that skilled bricklayers and blocklayers rely on for accurate, productive laying. Lime also improves mortar adhesion to masonry units, reduces the risk of mortar shrinkage cracking, and provides the limited flexibility and self-healing capability that allows masonry mortars to accommodate the small movements that occur in all structures without crack propagation.

The air-entraining agent incorporated in MasonRite entrains a system of microscopic air voids in the hardened mortar that provides two critical benefits: improved frost resistance in external masonry exposed to freeze-thaw cycling, and a further improvement in fresh mortar workability and cohesion that allows productive working in warm, drying conditions.

MasonRite is mixed at a standard ratio of 1 part MasonRite to 4.5 parts clean building sand by volume, producing mortars equivalent to designation (iii) in BS EN 998-2 — the most widely specified mortar designation for general masonry construction. Technical mix cards for specific applications are available from Buildhub.