Sika Ronacrete Unicell 25

Product Overview

Unicell 25 is a prepacked vinyl acetate copolymer modified mortar requiring only the addition of clean water to produce a mortar suitable for concrete repair and rendering. Conforms to the Hong Kong Housing Authority specification for Class 25 repair mortar system. Certified under the HKCI Product Conformity Certification Scheme PCCS-RM: Class 25. Can be applied in thick section, suitable for structural and non-structural application.

Features

• Prebagged for quality assurance (18 kg bag)
• Single component - just add water
• Easy to apply on overhead surfaces
• Easy to achieve smooth surface finish
• Suitable for structural repairs
• Waterproof
• Low VOC
• Can contribute to LEED certification

Applications

• Thick section concrete repairs to vertical and overhead surfaces
• Internal and external use
• Structural and cosmetic repairs to buildings and bridges
• Reinstate damaged concrete and protect reinforcement

Why Choose Unicell 25

• PCCS-RM Class 25 certified, compliant with Hong Kong Housing Authority specifications (per manufacturer)
• Waterproof repair mortar with high compressive strength
• Single component - just add water for easy application
• Most sizes in stock; please enquire for specific models

Packaging

18 kg bag

Notes

• Remove all defective concrete to a sound substrate; remove loose rust and scale from exposed reinforcement
• Cut around the perimeter of the repair area to sufficient depth to avoid feather edges
• Refer to product data sheet for primer ratio and water addition quantities
• Thick section application possible; intermediate layers should be primed before the next layer is applied
• Store in undamaged, unopened original sealed packaging in dry conditions; protect from direct sunlight, moisture, and frost
• For detailed application methods, coverage rates and technical parameters, please refer to the official product data sheet

FAQ

What is the difference between Unicell 25 and Unicell 40?

Unicell 25 is a Class 25 repair mortar, while Unicell 40 is a Class 40 high-strength repair mortar. Class 25 is for general structural repairs; Class 40 offers higher compressive strength and elastic modulus, suitable for higher-strength concrete.

How can I purchase Unicell 25?

Please contact us via WhatsApp for the latest pricing and availability. We offer in-store pickup at our Mong Kok shop and delivery across Hong Kong.