MJZ 20 x 12 FT Pool Liner Pad for Rectangular Above-Ground Pools — Thickened, Puncture-Resistant Felt Underlayment

MJZ 20 x 12 FT Thickened Pool Liner Pad is a heavy-duty, seamless underlayment designed to protect rectangular above-ground pools from punctures, provide insulation, and create a comfortable, non-slip base.

Protecting the bottom of an above-ground pool preserves the liner and improves comfort for swimmers. The MJZ 20 x 12 FT pad is made from a dense felt-like fabric engineered for toughness, flatness, and thermal resistance. It installs quickly under rectangular pool shells and works on a range of surfaces — from grass to gravel — while reducing wear and minimizing shifting beneath the liner.

How does this pad guard my pool liner from damage?

The thickened felt construction offers a resilient barrier between the ground and your pool liner, absorbing pressure from small rocks, roots and irregularities. Its puncture-resistant composition reduces the risk of tears and helps prolong liner life without bulky sand or gravel layers.

• High-density felt resists punctures and abrasion
• Seamless manufacture lowers weak points and leaks
• Flat, cushioned surface distributes pressure evenly
• Cut-to-fit design lets you trim away protrusions

Will this pad help keep the pool cooler or safer to walk on?

Yes — the material provides thermal insulation that limits heat transfer from the ground into the pool, helping maintain a more comfortable water temperature on hot days. The textured underside and soft top reduce slipping and offer a more comfortable surface for bare feet than bare liner on rough ground.

• Insulating layer reduces heat transfer from the soil
• Non-slip texture increases footing stability
• Cushioned feel improves comfort when entering or standing
• Reduces cold transfer in cooler weather as well

How easy is it to install and fit different pool setups?

Installation is straightforward: unroll the pad on a cleared surface and position the pool on top. The pad’s pre-sized 20 x 12 FT rectangle suits rectangular pool frames, yet it can be trimmed with a utility knife to accommodate slightly different footprints or to remove obstructions.

• Pre-cut size fits most rectangular above-ground pools
• Can be trimmed for irregular layouts or obstacles
• Works on grass, gravel, compacted soil, and decking
• Lightweight for one- or two-person placement

What makes this MJZ pad different from standard pool tarps or foam?

Unlike thin tarps that merely cover the ground, this pad combines thickness, durability, and integrated manufacturing for a flatter, longer-lasting underlayment. It’s thicker than many market alternatives, manufactured without seams to avoid weak spots, and finished with heat-assisted stamping for improved surface uniformity and tear resistance.

• Thicker felt fabric than typical tarp products
• Seamless construction reduces potential failure points
• Hot-stamped finish increases flatness and durability
• Designed specifically as an underlayment rather than a cover

Who is this for: The MJZ 20 x 12 FT Thickened Pool Liner Pad is ideal for homeowners with rectangular above-ground pools who want a practical, long-lasting underlayment. It suits families seeking extra liner protection, pool owners who need a non-slip cushioned base, and anyone installing a pool on grass, gravel, or uneven ground who prefers a ready-to-trim, durable solution rather than spreading sand or multiple layers.