Fosroc Renderoc HB70 Plus

Renderoc HB70 Plus is a high-strength, extra-high-build, shrinkage-compensated repair mortar that meets EN 1504-3 Class R4 performance. Applied in thick layers on vertical or overhead faces, it restores structural integrity to deteriorated concrete while delivering a dense, low-permeability barrier against water, chlorides, and CO2.

Features + Benefits:

Class R4 Structural Strength: Compressive strength > 45 MPa for load-bearing repairs.
Extra-High Build: Trowels up to ~50 mm in a single pass on vertical/overhead surfaces, reducing layer count and labour.
Shrinkage Compensation: Volume-stable matrix limits cracking and debonding, ensuring long-term bond to parent concrete.
Low Permeability & High Resistivity: Protects embedded steel by blocking water, chlorides, and atmospheric gases.
Single-Component Convenience: Pre-blended powder—just add water for consistent, site-friendly mixing.

Product Uses:

Reinstating badly spalled or delaminated concrete on columns, beams, decks, and soffits;
Structural repairs in marine, bridge, industrial, and water infrastructure where high strength and durability are critical;
Vertical or overhead patching of high-rise façades and precast elements requiring thick, load-bearing builds.

Pack Size:

Supplied in 25 kg moisture-resistant bags—yields ≈13 L of mixed mortar (coverage ≈1 m² at 13 mm thickness).