Bathtub & Sink Installation and Care Guide
Bathtub & Sink Installation and Care Guide
Step-by-step videos and checklists for installing your acrylic, stone resin or whirlpool bathtub and your stone resin sink, plus simple routines that keep each surface looking new for years.
Before You Start
A few checks before installation day save most of the problems we hear about.
Inspect on delivery
Check the crate and the product before you sign. Note any damage on the delivery receipt, take photos, and contact us within 48 hours. Keep the packaging until everything is installed and working. See freight delivery for details.
Measure the route and the room
Measure doorways, hallways, stair turns and the bathroom door against the product dimensions on the product page. Then check the footprint and faucet clearance in the room itself.
Line up the drain and the floor
Freestanding tubs connect to a floor drain; sinks connect to a wall drain. Confirm the drain rough-in matches your product before it goes in place. Filled with water and a bather, a tub can weigh several hundred pounds, so check the floor is solid, flat and level.
Gather tools and helpers
Spirit level, tape measure, pencil, utility knife, adjustable wrench, electric drill, waterproof silicone sealant with a caulk gun, work gloves and a soft towel. Two people can move most acrylic tubs; stone resin tubs often need three or four.
How to Install an Acrylic Freestanding Bathtub
Acrylic tubs are light enough for two people to carry and connect to a standard floor drain, so setup is usually quick.
-
Unbox and check
Open the carton, lift the tub out with a helper and remove the protective cover. Check the shell, drain hose and leveling feet before you go further.
-
Set it at the installation spot
Stand the tub upright where it will be installed, on a piece of carton or a blanket to protect the floor and the finish.
-
Check level
Lay a spirit level across the rim, both lengthwise and across, to see which side needs raising.
-
Adjust the leveling feet
With a helper, tip the tub onto its side and turn the adjustable feet underneath. Stand it back up and recheck until it sits level.
-
Connect the drain
Guide the drain hose into the floor drain as you lower the tub into its final position. Fill above the overflow and drain it once to check for leaks.
-
Seal, cure and clean
Run waterproof silicone evenly along the bottom edge. Let it cure for 24 hours, then wipe the tub clean before the first bath.
Good to know
Using a floor-mounted tub filler? Have its supply lines roughed in before the tub goes in place, and keep them clear of the drain connection.
How to Install a Stone Resin Freestanding Bathtub
Stone resin tubs are cast solid and sit directly on the floor. Plan the move and the drain connection before the tub goes in, because it isn't easy to shift once it's down.
-
Open the crate
Stone resin tubs arrive in a wooden crate. Unscrew the panels with a drill, lift off the lid and remove the protective cover. The tub stays on its pallet until you move it.
-
Move it into place
Use three or four people or a furniture dolly with straps. Lift from the base, never by the rim, and never drag it across the floor.
-
Check the floor
The tub rests on its whole base, so any dip or hump will make it rock. Correct an uneven floor before installation.
-
Connect the bottom drain pipe
Tilt the tub with your helpers and push the drain pipe firmly into the floor drain, then lower the tub into position.
-
Leak-test before sealing
Fill above the overflow and drain it. Make sure the drain connection stays dry before you seal the base.
-
Seal, cure and clean
Run waterproof silicone evenly along the bottom edge. Let it cure for 24 hours, then wipe the tub clean before use.
Good to know
Most homes need no floor reinforcement, but a filled stone resin tub is heavy. If it is going on an upper floor or an older floor, have a contractor check the joists first.
How to Install a Whirlpool Massage Bathtub
A whirlpool tub needs a drain connection and its own power supply. Have a licensed plumber handle the drain and a licensed electrician handle the wiring.
Video shown for the X-304 model. Installation details vary by model; follow the instructions supplied with your bathtub.
-
Prepare a dedicated circuit
Before the tub arrives, have an electrician install a dedicated 110–120V GFCI-protected circuit. Check the product page for your model's power requirements, especially if it has a heater.
-
Keep the pump accessible
The pump, blower and controls must stay reachable for service. On corner and alcove models, leave the front skirt removable; don't seal it in.
-
Position and level
Set the tub on a solid, flat floor and adjust the leveling feet until the rim is level in both directions.
-
Connect the drain
Connect the drain and overflow to the P-trap and check every joint is tight.
-
Water first, then power
Fill until the water covers the highest jet by a couple of inches before switching on. Never run the pump with the tub empty.
-
Test, then finish
Run the jets, lights and heater, and check for leaks around the pump and pipes. Then seal the edges against the walls and refit the access panel.
Safety first
Connect the tub only to a GFCI-protected circuit, and never use an extension cord. Switch off power at the breaker before opening the access panel.
How to Install a Stone Resin Wall-Mounted Sink
A wall-mounted sink hangs on mounting screws and leaves the floor clear. The screws carry its full weight, so they need a solid fixing in the wall.
-
Unbox and check
Open the carton, remove the foam and protective film, and check the sink and the mounting hardware.
-
Mark and drill the holes
Mark the mounting holes level, following the installation dimensions for your model, and drill them.
-
Set the anchors
Tap the expansion sleeves into the holes until they sit flush with the wall.
-
Fit the mounting screws
Screw the mounting screws into the expansion sleeves and tighten them securely.
-
Hang the sink
Line the sink up with the mounting screws and push it flush against the wall.
-
Lock it and connect
Tighten the anti-drop screws underneath the sink so it can't lift off the wall. Connect the drain pipe, run water and check for drips.
Good to know
The included expansion sleeves are for solid masonry or concrete walls. On a wood-framed wall with drywall, fix into the studs or add solid wood blocking first; drywall alone won't hold a stone resin sink.
Don't lean on or sit on a wall-mounted sink, even once it's fixed in place.
How to Install a Stone Resin Vessel Sink
A vessel sink sits on top of the vanity or countertop. All it takes is a wrench: the drain both seals the sink and holds it in place.
-
Check the countertop
Make sure the counter is level and has a drain hole. If it isn't pre-drilled, cut a hole sized for the drain included with your sink.
-
Position the sink
Set the vessel sink on the countertop and line up its drain opening with the hole in the counter.
-
Insert the drain
Drop the drain assembly in from inside the sink, through the sink and the countertop.
-
Fit the gaskets and lock nut
Fit the upper and lower sealing gaskets, then tighten the lock nut from below. Firm is enough; don't force it against the stone resin.
-
Connect the drain pipe
Connect the drain pipe to the P-trap and tighten it securely with a wrench.
-
Clean and test
Wipe the surface clean, then run water and check underneath for drips.
Good to know
Because the rim sits above the counter, pair a vessel sink with a tall deck-mounted faucet or a wall-mounted faucet.
If your sink has no overflow hole, use a drain without an overflow opening, or water will leak through the drain body.
How to Clean and Care for an Acrylic Bathtub
Acrylic has a smooth, glossy, non-porous surface. The video demonstrates stain and scratch resistance, including a steel wool scratch test. This test is not a recommendation for everyday cleaning. For routine care, use a soft cloth or sponge and a mild cleaner.
Do
- Rinse after each bath and wipe dry with a soft cloth to prevent water spots and soap film.
- Once a week, clean with warm water and mild dish soap, or a cleaner labeled safe for acrylic, using a soft sponge.
- Lift hard-water marks with equal parts white vinegar and warm water, then rinse well.
- Buff out fine surface scratches with an acrylic polish or a non-abrasive polishing compound and a soft cloth, in small circles.
Avoid
- Steel wool, abrasive pads and scouring powder. The steel wool in the video is used only to demonstrate scratch resistance; it is not intended for routine cleaning.
- Acetone, nail polish remover, paint thinner and other solvents.
- Undiluted bleach or drain cleaner left on the surface.
- Dropping heavy or sharp objects into the tub.
Whirlpool tubs: clean the jets monthly
Fill with warm water above the highest jet, add a whirlpool jet cleaner (or about 2 tablespoons of low-foaming dishwasher detergent), and run the jets for 10–15 minutes. Drain, refill with cool water, run the jets again for 10 minutes to rinse, then drain. Avoid bubble bath and bath oils while the jets are running.
How to Clean and Care for a Stone Resin Bathtub or Sink
Matte stone resin is non-porous and easy to keep clean. Most everyday marks lift with a soft sponge and mild soap.
Do
- Rinse after each use and wipe dry. Matte surfaces show water spots and soap residue most.
- Once a week, clean with warm water and a pH-neutral cleaner or mild dish soap, then rinse.
- For stubborn marks or hard water, use a mild cream cleaner on a non-scratch sponge in small circles, then rinse thoroughly.
- Blend out light scratches on the matte finish with a fine sanding sponge, using light pressure and small circles. Try a hidden spot first.
Avoid
- Strong acids, bleach, acetone and other harsh chemicals.
- Pouring boiling water into the tub or setting hot items on the surface.
- Leaving hair dye, colored bath bombs or oils to sit. Rinse them off promptly.
- Wire brushes and steel wool.
Chips or deep scratches?
Contact us before attempting a repair. Send a photo and we will advise on the best fix for your model.
Installation & Care Questions
Is installation included with delivery?
No. Standard freight delivery places your tub at your door, porch or garage, and installation is not included at any delivery level. We recommend a licensed plumber, plus a licensed electrician for whirlpool tubs.
Can I install a freestanding bathtub myself?
If the floor drain is already in the right place, an experienced DIYer can usually install an acrylic freestanding tub. For stone resin tubs, which are much heavier, and for whirlpool tubs, which need wiring, we recommend a professional.
How long should I wait before the first bath?
Let the silicone sealant cure for 24 hours before filling the tub or using the sink.
Does a stone resin bathtub need floor reinforcement?
Most homes don't need it. A filled stone resin tub is heavy, though, so if it is going on an upper floor or an older floor, ask a contractor to check the joists first.
What power supply does a whirlpool tub need?
A dedicated 110–120V circuit with GFCI protection, installed by a licensed electrician. Check your model's product page for its exact power requirements.
What cleaners are safe for acrylic and stone resin?
Warm water with mild dish soap or a pH-neutral cleaner is safe for both. For everyday cleaning, avoid scouring powders, steel wool, acetone and other solvents, and strong bleach.
Need help with your installation?
Questions about measurements, drain position or which faucet fits? Send us your model and a photo of your space, and we'll help you plan it.
Last updated: November 2026. Installation guidance is general; always follow the instructions supplied with your product and your local plumbing and electrical codes.