Everything you need to build with Rock Hard Cement
Technical sheets, mix guides, operational checklists and calculators — the reference material Jamaican homeowners, contractors and hardware stores use every day.
The Rock Hard Cement Resource Library pulls together everything you need to specify, order and use Portland cement in Jamaica. If you can’t find what you’re looking for, our technical team is a call away.
Portland Cement Technical Data Sheet
Chemical composition, strength class, setting times and application guidance for Rock Hard CEM I 42.5 N Portland cement.
Cement Calculator
Estimate 42.5 kg bag requirements for slabs, foundations, columns, beams, block laying and plastering — with parish delivery fees included.
Contractor Bulk Supply Guide
Phased-delivery planning, PO workflows and credit terms for large-scale construction projects across Jamaica.
Delivery Preparation Checklist
Site access, unloading, storage and safety requirements to ensure a smooth Rock Hard cement delivery to your project.
Quality Assurance
Independent EN 197-1 batch testing, traceability and consistency standards behind every Rock Hard bag and tanker load.
Frequently Asked Questions
Answers to the most common questions from homeowners, contractors, hardware stores and distributors across Jamaica.