Existing pool guide

Pool liner replacement cost in St. Louis

Most inground vinyl liner replacements in the St. Louis area fall around $4,500–$8,500. Shape, steps, benches, pool size, liner thickness, pattern, and the condition of the track and floor determine where your project lands.

What drives the quote

• Measurement: A correct custom measurement matters. A poor fit can wrinkle, pull, or shorten liner life.
• Shape and features: Rectangles are simpler than freeform pools, Roman ends, built-in steps, tanning ledges, and benches.
• Repairs: Track repair, coping issues, vermiculite or concrete floor patching, and step repairs add cost.
• Water: Refill method and water delivery can be separate line items.
• Timing: Spring demand is heavy. Measuring and ordering before peak season can reduce the scramble.

What a replacement actually involves

1. Measure: the pool is measured precisely — length, width, depths, step and bench locations, and wall angles — because the liner is manufactured to that template.
2. Drain and remove: the old liner comes out and the floor and walls are inspected; this is when track damage, floor washouts, and step problems are found and priced honestly.
3. Prep and repairs: floor patching, track repair, and gasket replacement happen before the new liner is anywhere near the pool.
4. Set and fill: the new liner is positioned, vacuum-set to pull it smooth against the walls, and the pool is filled while fittings are cut in.
5. Balance and check: water chemistry is balanced and every fitting is checked for leaks.

Liner choices that change the price

• Thickness: liners are commonly sold in 20 mil and heavier 27/28 mil grades. The heavier liner costs more up front and generally tolerates more years of sun, chemistry, and use.
• Pattern: deeper blues and tile-border prints sit at the top of most price lists; the pattern does not change durability, only looks.
• Texture and finish: textured options for steps and tanning ledges add cost and are worth it where feet need grip.

A well-kept vinyl liner in Missouri commonly lasts somewhere in the high-single-digit to low-double-digit years before fading, brittleness, or seam and fitting leaks make replacement the sensible move. Sun exposure and chemistry discipline are the two biggest lifespan levers a homeowner controls.

Replacement or new pool?

A liner replacement refreshes an existing vinyl pool. It is not the same project as installing a new vinyl-liner pool, which typically runs $35,000–$65,000 before premium site work and features.

Signs the liner is near the end

• Repeated patching or leaks around fittings and seams
• Wrinkles, stretching, or the liner pulling out of the track
• Severe fading, brittleness, or cracking above the waterline
• Stains and wear that cleaning no longer improves