Why Vermiculite Is the Industry Standard for Pool Bottoms

When it comes to vinyl-liner pool installations, the base material matters more than most homeowners realize. Vermiculite has been the industry standard for decades , and for good reason.

Mixed with Portland cement and water, vermiculite creates a smooth, semi-rigid floor that conforms to any pool shape. Unlike sand, it won't shift or wash away. Unlike pure concrete, it offers thermal insulation and a comfortable surface under the liner.

Vermiculite pool base sets quickly, allowing crews to complete installations efficiently. It resists moisture damage over time and provides consistent performance across a wide range of climates and pool designs.

For pool builders looking for reliable results and satisfied customers, vermiculite remains the proven choice. Whittemore supplies pool-grade vermiculite in bulk and bagged formats to meet any project scale.