Mannok Master Grade Cement – 25kg Weatherproof Bag

About this item:
Mannok Master Grade Cement is a CEM II/A-L 32.5R Portland-limestone cement formulated with an air-entraining agent to improve the workability, cohesion and finishing of mixed material. It is particularly suited to bricklaying and blockwork mortars, plastering and rendering, where a smooth, workable mix helps tradespeople achieve consistent joints and finishes. It can also be used for correctly specified concrete and floor screeds, giving contractors one practical cement for several general building tasks.

The entrained air improves the hardened mix’s resistance to freeze-thaw attack, although freshly completed work must still be protected from frost and adverse weather. Supplied in a manageable 25kg plastic weatherproof bag, the cement is better protected against site moisture during handling and short-term storage than conventional paper packaging. The bag should nevertheless be stored unopened, off the ground and in a dry covered location. Master Grade Cement is a practical choice where workability and finish are priorities rather than enhanced structural strength.

Key Features
• CEM II/A-L 32.5R Portland-limestone cement
• Air-entrained formulation improves workability and cohesion
• Produces smoother mortar, plaster and render mixes
• Easier placement and finishing supports consistent workmanship
• Improved resistance to freeze-thaw attack after curing
• Suitable for mortar, plaster, render, concrete and screed
• 25kg weatherproof plastic bag improves protection during handling
• Suitable for trade, commercial and domestic building work

Typical Applications
• Bricklaying mortar
• Blockwork mortar
• Internal plastering
• External rendering
• Bedding and pointing
• General-purpose concrete
• Floor screeds
• Masonry repairs

Common Questions:
Q. How does Master Grade Cement differ from General Purpose Cement?
A. Master Grade Cement contains an air-entraining agent that improves workability, cohesion and finishing. It is particularly suited to mortar, plaster and render, whereas General Purpose Cement is intended as a broader all-round option.

Q. Can Master Grade Cement be used for structural concrete?
A. It is suitable for concrete, but structural concrete must be produced to the strength class, exposure class and mix design specified by the project engineer. Do not assume that a general site-mixed ratio will satisfy structural requirements.

Q. Does the mix require additional lime or plasticiser?
A. The air-entrained formulation already improves plasticity and workability. Additional lime or admixtures should only be used where required by an approved mix specification, as excessive air entrainment can reduce hardened strength.

Q. Can it be used during cold weather?
A. The formulation improves the cured material’s resistance to freeze-thaw attack, but it does not make fresh mortar, render or concrete frost-proof. Avoid working at temperatures below 5°C and protect completed work from freezing.

Q. Can the weatherproof bag be stored outside?
A. The plastic bag provides improved resistance to site moisture but should not be treated as suitable for prolonged exposed storage. Keep it sealed, covered, off the ground and protected from rain and standing water.

PLEASE NOTE:
!!! During periods of high demand or temporary supply shortages, an equivalent brand may be supplied. Any substitute will be of comparable quality and suitable for the same applications. !!!