HPB Aggregate vs. Limestone: Which is Best for Your Project?

When it comes to landscaping and hardscaping projects, choosing the right base material is crucial. Two popular options are High-Performance Bedding (HPB) aggregate and crushed limestone, both of which offer unique benefits and drawbacks. Understanding their differences can help you make the best decision for your specific needs.

What is HPB Aggregate?

HPB (High-Performance Bedding) aggregate is a 3/8” (10mm) washed limestone chip that is self-compacting and commonly used as a base for pavers, patios, walkways, and drainage applications.

✅ Pros of HPB Aggregate:

✔ Self-Compacting – Requires little to no compaction, saving time and labor costs.
✔ Excellent Drainage – Water flows through easily, reducing the risk of pooling or erosion.
✔ Easy to Work With – Lighter and easier to spread compared to traditional aggregates.
✔ Minimal Maintenance – Doesn’t require frequent re-leveling over time.
✔ Great for Small Spaces – Ideal for tight areas where mechanical compaction is difficult.

❌ Cons of HPB Aggregate:

✖ Higher Cost – More expensive than standard limestone screenings.
✖ Not as Dense – May not provide the same solid foundation for heavy loads like driveways.

What is Crushed Limestone?

Crushed limestone is a versatile aggregate made from finely crushed natural limestone, commonly used as a base material for driveways, patios, and retaining walls. It comes in various sizes, with limestone screenings (small particles) often used for paver bases.

✅ Pros of Crushed Limestone:

✔ Strong & Durable – Provides a solid, stable base for heavy loads.
✔ More Affordable – Generally lower in cost compared to HPB.
✔ Widely Available – Easily sourced from most landscaping suppliers.
✔ Versatile – Can be used for a variety of applications, including pathways and driveways.

❌ Cons of Crushed Limestone:

✖ Compaction Required – Needs to be mechanically compacted to create a stable base.
✖ Retains Moisture – Doesn’t drain as well as HPB, which can lead to shifting or settling.
✖ Prone to Dust & Erosion – Fine particles can create dust and may wash away over time.

Which One Should You Choose?

Choose HPB if: You need a quick, easy-to-install base with excellent drainage for patios, walkways, or small-scale projects.
Choose Crushed Limestone if: You require a more compact, durable base for driveways, retaining walls, or high-traffic areas where weight and stability are crucial.

Both materials have their strengths, and the best choice depends on your specific project needs, budget, and drainage requirements.

📞 Need professional advice? Contact us today, and we’ll help you choose the perfect base for your project!

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