Walk‑In Tub Installation: Step‑by‑Step Guide

A complete guide to installing a walk‑in tub — from demolition and plumbing rough‑in to electrical, sealing, ADA clearances, costs, and safety checks.

Walk-in tub installation with plumber and tools in modern bathroom

A walk‑in tub enhances accessibility, safety, and wellness. Proper installation prevents leaks, protects subfloors, ensures ADA‑minded clearances, and keeps powered components compliant. The steps below cover planning, plumbing, electrical, sealing, testing, costs, and maintenance—so your tub performs on day one and stays reliable for years.

Step‑by‑step installation

1) Site prep & demolition

Shut off water, protect floors, and remove the existing tub. Inspect and level the subfloor, confirm alcove dimensions, and ensure clear access for the tub door swing.

2) Plumbing rough‑in alignment

Review manufacturer specs for drain and supply inlets. Dry‑align the drain and overflow, pressure‑test lines, and verify shut‑off valves.

3) Electrical requirements

Install a dedicated GFCI‑protected circuit sized to the manufacturer’s amperage. Place the disconnect per local code. Hire a licensed electrician for compliance.

4) Positioning & leveling

Dry‑fit the tub, shim and level, check door seal, and mark anchor points before fastening.

5) Secure frame & connections

Fasten the tub, connect drain and supply lines, complete electrical hookups, and test fill for leaks before finishing walls and trim.

6) Seal & surround

Apply silicone, install wall panels or tile surround, and mount grab bars anchored to studs for ADA compliance.

7) Final testing & handover

Fill to operating level, run jets, verify temperature control, check door seal, and walk through usage and maintenance with the homeowner.

Costs & safety

Final cost depends on tub model, electrical requirements, and finish materials. Always pull permits and schedule inspections where required.

Maintenance essentials

Conclusion

A well‑planned walk‑in tub installation delivers accessible bathing, therapeutic benefits, and long‑term peace of mind. Follow structured steps—prep, plumbing, electrical, sealing, and final testing—to prevent leaks and ensure compliance.