Bathtub Replacement Q&A

Bathtub replacement runs $1,500-$6,000 installed, with the average project around $3,750. The tub itself costs $400-$2,500: fiberglass tubs run $400-$800, acrylic tubs $500-$1,500, and cast iron or freestanding models $1,500-$2,500. Labor adds $1,000-$2,500 and includes removing the old tub, disposing of it, installing the new one, and connecting the plumbing. Two factors drive the cost up quickly: the surround — if you're replacing the tub and tiling the walls around it, add $1,000-$3,000 for a new surround or tile work — and plumbing changes, where moving the drain or supply lines adds $500-$2,000. If your old tub is in a mobile home or tight alcove, access challenges can add $200-$500. Getting multiple quotes matters because tub pricing between plumbers varies by 30-50% for identical fixtures.

Yes, converting a bathtub to a walk-in shower is a common bathroom remodel, and the cost difference is manageable: the conversion typically runs $4,000-$9,000, which is $2,000-$3,000 more than a straight tub swap. The additional cost covers removing the tub, waterproofing the wet area, installing a shower pan and glass enclosure, and rerouting the drain (a tub drain is in the floor center, while a shower drain must be relocated to the center of the new pan). If you're converting for accessibility, budget for a curbless entry ($500-$1,500 extra for floor slopping) and grab bars ($150-$400). Converting the other direction — shower to tub — is rarer and costs $5,000-$10,000 because tubs are heavier and the floor may need reinforcement. Note that many buyers still expect at least one tub in a home for resale, especially in family neighborhoods — if you remove the only tub, consider how that affects future buyers.

A direct bathtub swap takes 1-2 days. Day one: the plumber disconnects the supply and drain lines, cuts out the old tub (they're often too big to fit through doorways, so pros cut fiberglass and acrylic tubs into pieces — cast iron tubs are sometimes broken up or removed through windows), and preps the opening. Day two: the new tub is set in place, leveled, secured, and the drain and supply lines reconnected. If you're also adding a surround or tile work, add 2-4 days for waterproofing, tile installation, and grout curing. Plumbing inspections can add a day in jurisdictions that require them. A realistic timeline for the full project including surround: 4-7 days from demolition to finished, mostly because tile adhesive and grout need curing time. Ask for a written schedule — some contractors quote two weeks because they juggle multiple jobs.

Refinishing (also called reglazing) costs $300-$700 versus $1,500-$6,000 for replacement, and it's the right choice when the tub structure is sound — no cracks in the enamel reaching the cast iron, no rust-through, and the tub hasn't been refinished before. A professional refinisher applies an epoxy coating that lasts 5-10 years with proper care. The tradeoffs: refinished tubs chip more easily than factory enamel (avoid abrasive cleaners and heavy items), the finish can yellow over time, and multiple reglazings build up and eventually peel. Replacement is the better choice if the tub has structural damage, you dislike the shape or size, you want a walk-in conversion, or you're doing a full bathroom remodel anyway (the marginal cost of a new tub during a remodel is small). One warning: DIY reglazing kits ($50-$100) rarely hold up — professional spraying with proper prep is the only version that lasts.

The four common bathtub materials balance price, durability, and heat retention. Fiberglass is cheapest ($400-$800) but flexes, scratches easily, and can fade in 5-10 years. Acrylic ($500-$1,500) is the most popular choice — warm to the touch, holds heat reasonably well, resists scratches better than fiberglass, and is repairable. Cast iron ($1,500-$2,500) is the premium traditional option: extremely durable, excellent heat retention (baths stay warm longer), but heavy (300+ lbs, sometimes needing floor reinforcement) and expensive to install. Steel enamel ($500-$1,200) sits between acrylic and cast iron — durable and cheaper than cast iron but loses heat faster and can chip. For most homeowners, acrylic is the recommended value choice. If you take long hot baths, cast iron's heat retention is genuinely noticeable. Freestanding soaking tubs are the design statement option, but they cost $2,000-$6,000 plus installation and use more water.