Bathtub liners are designed to fit over existing tubs and surround walls, and are glued over your existing fixtures, nothing is removed.
Bad Bathtub Liner AFTER Removal
Bathtub Liners are made out of vinyl, acrylic or plastic the same as new pre-fab units. Liners are generally 50% to 70% more expensive than bathtub refinishing and take several weeks to order and fabricate because they have to be custom fit.
Problems arise when water becomes trapped in the space between the existing tub and new liner. Over time, this water becomes stagnant, and will lead to offensive odors and unsanitary mold and mildew. This is next to impossible to correct without removing and destroying the liner itself, then you’re back to square one.