RockBlockerProtective Underlayment for Above-Ground and Semi-Inground Pools
The RockBlocker is a premium protective underlayment designed for above-ground and semi-inground pool installations, whether you are building a new pool or replacing an existing liner. Installed directly over the pool base and underneath the liner, RockBlocker forms a durable barrier that helps prevent sharp objects from damaging the liner as the pool settles over time.
Constructed from a high-strength, puncture-resistant fabric, RockBlocker blocks rocks, roots, and debris from pushing upward through the liner. Its industrial-grade material conforms smoothly to the pool bottom, providing consistent long-term protection and helping extend the lifespan of the liner. Whether you are using sand, stone dust, or another prepared pool base, RockBlocker delivers dependable defense and added peace of mind.
Key Features
Designed for above-ground and semi-inground pools
Installs between the pool base and the liner
Helps prevent punctures from rocks, roots, and debris
Ideal for new pool installations and liner replacements
Industrial-grade, puncture-resistant fabric for long-lasting durability
Conforms to the pool bottom for smooth and even protection
Supports long-term liner performance as the pool settles naturally
Reduces liner wear and helps prevent costly repairs
