Protecting the Workspace and Ventilation Setup

Before any work begins, the technician protects your bathroom by covering floors, walls, fixtures, and adjacent surfaces with plastic sheeting and drop cloths. This prevents overspray, dust, and debris from damaging your tile, vanity, or flooring.

Removing Drains, Trim, and Hardware

The drain cover, overflow plate, faucet handles, and spout are removed to expose the entire tub surface and prevent coating buildup on hardware. Removing hardware also allows the finish to wrap cleanly around drain and overflow edges, creating a watertight seal.

Old Caulk Removal and Joint Prep

All existing caulk and sealant around the tub perimeter is cut away and removed. Old caulk traps moisture and prevents new coating from bonding properly at the edges. Fresh caulk will be applied after refinishing to keep water out of joints.

Degreasing and Surface Cleaning

The tub is scrubbed with industrial-strength degreasers and cleaners to remove soap scum, body oils, mineral deposits, and cleaning product residue. This step is critical—any contamination left on the surface will block adhesion and cause premature peeling. The tub is rinsed multiple times until water runs clear.

Filling Chips and Crack Repairs

Visible chips, scratches, and small cracks are filled with a two-part epoxy filler or tub repair compound. Rust spots are treated and neutralized before filling. Once the filler cures, it's sanded flush with the surrounding surface so no imperfections show through the new finish.

Etching the Surface for Adhesion

The entire tub surface is chemically etched with an acid solution or mechanically abraded with 400–600 grit wet/dry sandpaper. This creates a microscopic "tooth" or surface profile that allows the new coating to mechanically bond to the old substrate. Without proper etching, the finish will sit on top of the surface rather than adhering to it.

Drying and Moisture Check

All moisture is removed from the tub surface using heat guns, blowers, or lint-free cloths. Even trace moisture trapped under the coating will cause bubbling, blushing, or adhesion failure. Some professionals allow 24 hours of air drying for heavily saturated substrates.

Masking Surrounds and Containment

Tile, drain openings, faucets, and surrounding surfaces are carefully masked off with painter's tape and plastic. This ensures clean edges and prevents overspray on areas that shouldn't be coated.

Bonding Agent, Primer, and Topcoat Application

A bonding primer or adhesion promoter is applied first to create a chemical link between the old surface and new coating. Then, 2–3 thin, even coats of high-solids acrylic-urethane or epoxy topcoat are spray-applied using an HVLP (high-volume, low-pressure) spray gun. Multiple thin coats prevent drips, runs, and uneven coverage while building a durable, glossy finish. Each coat is allowed to flash-dry for 15–30 minutes before the next is applied.

Curing Time and Recoat Windows

After the final coat, the tub is left undisturbed to cure. Surface cure (touch-dry) happens within a few hours, but the tub must remain completely dry for 24–48 hours before first use. Full chemical resistance and maximum hardness develop over 7–14 days, though normal bathing can resume after the initial cure window.

DIY kits fail prematurely because they skip deep cleaning, proper etching, bonding primers, and professional-grade coatings. The result is a finish that looks acceptable initially but peels, chips, or yellows within 1–3 years.

• Total on-site time: 3–5 hours from start to finish
• Bathroom access: You can use the sink and toilet immediately; only the tub is off-limits
• Odor: Professional coatings are low-odor, but ventilation is recommended during application
• Cure window: Plan for 24–48 hours without using the tub; some technicians recommend 72 hours in high humidity
• Final steps: After curing, masking is removed, hardware is reinstalled, and new caulk is applied around the perimeter