# Acrylic vs Combo Tub-Shower: Cost and Fit Guide > Compare acrylic walk-in tubs and combo tub-shower units by price, size, door seals, and installation requirements before you buy. Canonical: https://walkintublab.com/acrylic-vs-combo-tub-shower/ Last updated: 2026-11-09 Acrylic walk-in tubs and combo tub-shower units serve different bathroom layouts and bathing routines. An acrylic walk-in tub is a sealed soaking basin with a door, while a combo tub-shower pairs a tub deck with a shower surround and sometimes a low-threshold entry. Your choice depends on available space, who will use the tub, and whether you need a shower function in the same footprint. ## Measure Before You Compare Start with the room, not the brochure. Measure the width of the bathroom door, the distance from the back wall to the vanity or toilet, and the floor-to-ceiling height. A common alcove opening is 60 inches wide by 30 or 32 inches deep, but older homes often have irregular framing or out-of-plumb walls. Check floor joist capacity if you are installing on a second story. A filled acrylic tub can hold 40 to 80 gallons of water. Water weighs about 8.34 pounds per gallon, so a 60-gallon fill adds roughly 500 pounds before a bather steps in. A 200-pound person brings the total load near 700 pounds, plus the weight of the tub shell itself. Confirm that the subfloor and framing can support that concentrated load. Door clearance matters too. An inward-swinging door needs clear space inside the tub for the bather to close it, while an outward-swinging door requires room in the bathroom. Measure both before ordering. ## Acrylic Walk-In Tubs Acrylic is a molded plastic material reinforced with fiberglass. It retains heat well and feels warmer to the touch than gelcoat or enameled steel. Acrylic walk-in tub units typically range from $1,500 to $6,000 for the shell alone, depending on door style, jet configuration, and size. Standard installed walk-in tub projects usually fall between $3,000 and $10,000. That range includes removal of the old tub, plumbing rough-in, surround installation, and basic electrical work. If your home needs a new dedicated circuit or a GFCI breaker, electrical and permit work can add $300 to $1,200. The main limitation of a dedicated acrylic walk-in tub is that it is primarily for soaking. Most models do not include a shower head or curtain rod, so users who want a shower must use a separate stall or install a combo unit. ## Combo Tub-Shower Units A combo tub-shower combines a tub basin with an integrated shower surround. Some models include a walk-in door with a low threshold, while others are standard tubs with a shower curtain or sliding glass door. Installed walk-in shower conversions typically cost $3,000 to $12,000, depending on wall materials, pan type, and whether the drain location moves. Combo units make sense when one bathroom must serve both seated bathers and standing shower users. They can also fit more easily into existing alcoves because manufacturers build them around standard 60-inch by 30-inch or 60-inch by 32-inch rough openings. The tradeoff is that the tub well is often shallower than a dedicated soaking tub, and the door threshold may be higher than a purpose-built walk-in tub. If the primary user has limited mobility, test the step height and door swing before committing. ## Gelcoat vs Acrylic Some entry-level tubs use gelcoat fiberglass rather than acrylic. Gelcoat tub units generally cost $1,000 to $3,500, making them the lowest-priced option on a unit-only basis. Gelcoat is lighter and less expensive, but it can flex more under weight and may show wear faster than acrylic. If budget is the deciding factor, gelcoat reduces the initial outlay. If long-term heat retention and surface durability matter more, acrylic usually justifies the higher price. ## Installation Cost Arithmetic Use these figures as estimates, not quotes. Suppose you choose an acrylic walk-in tub unit priced at $3,500. Add standard installation at $6,500, a midpoint of the installed range, and electrical and permit work at $750. The project total comes to approximately $10,750. For a combo tub-shower conversion priced at $7,000 installed, plus $600 for electrical and permit work, the total reaches about $7,600. If you later need a door seal replacement on either type, budget $150 to $500 for parts and labor. Always request an itemized quote that lists tub unit, delivery, removal, plumbing, surround, electrical, permit, and disposal separately. That makes it easier to spot where estimates diverge. ## Door Seals and Maintenance The door seal is the most common failure point on any walk-in tub. A leaking seal can damage the subfloor and surrounding drywall. Inspect the seal quarterly for cracks, mildew buildup, or loss of compression. Clean it with a non-abrasive cleaner and dry it after use. When a seal fails, replacement typically costs $150 to $500 depending on door style and labor rates. Do not wait for visible water on the floor; a slow leak can rot the subfloor before you notice it. Acrylic surfaces should be cleaned with non-abrasive products to avoid scratches that harbor soap scum. Combo units with shower surrounds need attention at the caulk lines where the wall meets the tub deck. Re-caulking every few years prevents water migration behind the surround. ## Where Each Type Fits Best Choose an acrylic walk-in tub when: - The bathroom is used primarily for seated soaking. - You have a separate shower stall nearby. - Floor framing can support a full tub of water plus bather weight. - You want a deeper soaking well than a combo unit typically provides. Choose a combo tub-shower when: - One room must serve both tub and shower users. - You are converting an existing tub-shower alcove. - You want a single threshold for entry and exit. - Space does not allow a separate shower stall. If you are unsure which configuration matches your bathroom, review our walk-in tub vs walk-in shower comparison for layout scenarios and clearance diagrams. ## Final Checklist Before Buying 1. Measure door width, alcove dimensions, and floor-to-ceiling height. 2. Confirm floor joist capacity for a filled tub and bather. 3. Decide whether you need a shower function in the same unit. 4. Get an itemized quote including electrical, permit, and disposal. 5. Ask about door seal warranty and replacement cost. 6. Verify whether the unit requires a dedicated GFCI circuit. Measurements and door seals come first. Sales claims never decide the purchase. For more on installation steps, see our walk-in tub installation guide, and for ongoing care, review our walk-in tub maintenance overview. If you are researching overall pricing, our walk-in tub cost article breaks down unit and labor factors by region. Next, compare [how much does walk in tub cost](https://walkintublab.com/how-much-does-walk-in-tub-cost/), [walk in tub installation](https://walkintublab.com/walk-in-tub-installation/), [walk in tub repair](https://walkintublab.com/walk-in-tub-repair/) before you commit.