Should I use crushed limestone or 3/4 clear for Vancouver paver base?

For Metro Vancouver paver installations, 3/4 clear (also called 3/4 minus or road base) is the superior choice over crushed limestone for your base material. The combination of various sized aggregates in 3/4 clear creates better compaction and drainage performance in our wet climate.

3/4 clear contains a blend of aggregate sizes from 3/4 inch down to fine particles, which allows it to compact into a dense, stable base when properly installed in 2-inch lifts with a plate compactor. This gradation creates excellent load-bearing capacity while still maintaining adequate drainage — critical in Metro Vancouver where your base will see over 1,200mm of annual rainfall. The fines in the mix help lock the larger stones together, creating a solid foundation that resists shifting under traffic loads.

Crushed limestone, while excellent in drier climates, has significant drawbacks in Metro Vancouver's marine environment. Pure limestone is more susceptible to chemical weathering from our acidic rainwater (pH typically 5.0-6.0 due to coastal atmospheric conditions). Over time, this can cause the limestone to break down and create drainage issues. Additionally, crushed limestone without fines doesn't compact as well as a properly graded road base material, potentially leading to settlement issues.

For Metro Vancouver installations, specify 3/4 clear road base at 6-8 inches depth for patios and walkways, and 10-12 inches for driveways. This material is readily available from local suppliers like Lehigh Hanson, Burnco, and Mainland Sand & Gravel. Expect to pay $35-50 per cubic yard delivered. Always install geotextile fabric between your clay subgrade (common in Surrey, Richmond, Delta, and Langley) and the road base to prevent soil migration that would destroy drainage capacity.

The key to success with any base material in Vancouver is proper compaction and drainage design. Compact in 2-inch lifts maximum, ensure 2% minimum slope away from buildings, and install perforated drain pipe at low points. Even the best base material will fail if water has nowhere to go during our heavy winter rains.

This is definitely professional installer territory — proper base preparation requires a plate compactor, laser level for grade control, and experience with compaction techniques. DIY base work on anything larger than a small garden path typically leads to settling and failure within 1-3 years.

Need help finding an interlock installer who understands Vancouver's drainage requirements? Vancouver Interlock can match you with experienced local contractors for free estimates.