Blue Wave NL1972 Gorilla Guard Above-Ground Pool Wall Foam Roll 48" x 85' White — Closed-Cell, 1/8" Cushioning

Blue Wave NL1972 Gorilla Guard is a closed-cell polyethylene pool wall foam roll that cushions above-ground metal walls to protect liners from punctures, abrasion, and heat loss.

When replacing a liner or preparing an above-ground pool for another season, protecting the critical interface between the metal wall and the vinyl liner prevents tears, creases, and accelerated wear. This Blue Wave wall foam provides professional-grade, moisture-resistant padding in a lightweight roll that is easy for DIY installers to trim and attach. Its closed-cell, high-density construction resists water absorption and helps trap heat to improve seasonal energy efficiency.

How does this wall foam stop liner damage?

The NL1972 forms a continuous, padded barrier between the rough or dented metal wall and the vinyl liner, eliminating direct contact that causes punctures and friction wear. The foam compresses slightly under pressure to smooth sharp edges and distribute force.

• Closed-cell polyethylene resists tearing and moisture.
• 1/8" thickness balances cushioning with flexibility.
• Full-height 48" roll covers typical above-ground wall heights.
• Butt-seam installation prevents gaps where the liner could catch.

What size pools does one roll cover and how is it measured?

Each roll measures 48 inches high by 85 feet long, sized to cover pools up to 24 feet round with wall heights up to 54 inches when used according to liner overlap and trimming needs. Measure your pool circumference and wall height before purchasing to confirm fit.

• 48" height accommodates standard above-ground liner heights.
• 85' length suits up to 24-ft round pools with typical fittings.
• Lightweight roll allows on-site trimming for odd shapes or cutouts.
• Not intended for in-ground pool installation.

How easy is installation for a DIY pool owner?

Installation requires no specialized tools: the lightweight foam cuts with scissors or a utility knife and adheres to clean, dry metal walls with a suitable foam adhesive spray (not included). Edges are butted together along the wall; the foam’s flexibility makes it simple to conform to curves and seams.

• Cut to fit with basic hand tools.
• Use spray adhesive formulated for polyethylene foam.
• Work on a dry, cleaned metal surface for best bond.
• Pairs with Cove foam and standard overlap liners for full protection.

Will this foam affect pool temperature or heating costs?

Because the material is closed-cell and traps air in non-porous pockets, it acts as a modest thermal break that reduces heat transfer through metal walls. While not a substitute for dedicated insulation, it helps retain warmth during swim sessions and can contribute to lower heater runtime.

• Closed-cell structure limits moisture and heat loss.
• 1/8" thickness offers a balance of thermal benefit and install flexibility.
• Helps reduce heat transfer at the wall-liner junction.
• Complementary to other pool insulation strategies.

Who is this product for? Blue Wave NL1972 Gorilla Guard wall foam is aimed at above-ground pool owners, seasonal DIY installers, and pool service professionals who want durable, moisture-resistant protection for vinyl liners without complicated installation. It suits projects including liner replacements, new above-ground installations, and routine seasonal maintenance for round pools up to 24 feet and walls up to 54 inches. Backed by Blue Wave’s 35 years of pool industry experience and a 90-day limited warranty, it offers a practical, long-lasting layer of defense where liners meet metal.