How to Install a Fiberglass Bathtub

What You'll Need
Fiberglass Bathtub
Wrench pipe
Measurement Tape
Adjustable wrench
Slip-joint pliers
Screw drivers
Drain Assembly
Flip Valve assembly
Diverter Assembly

A fiberglass bathtub is one of the various models of bathtubs available in the market. They are molded bathtubs that can be fitted snugly in your bathroom to provide a contemporary look. Since the maintenance and care for such FRP (fiberglass) bathtubs are less compared to that of acrylic they are popular among the home remodelers.

Step 1 – Area Considerations

Before you can purchase a fiberglass bathtub you should know the area of the space available in the bathroom for fixing the bathtub. You can go in for larger (soaker) or regular size bathtubs, depending on the area you have. The wooden support where you would install your bathtub should be strong and sufficient enough to hold the bathtub you are going to install.

Step 2 – Preparing the Support

You should prepare the wooden frame support for the bathtub if they will not provide adequate strength or size. If you have added a new wooden support, make provisions for the plumbing to fit properly. It means that the support should have provisions for a water inlet and water outlet facilities in the bathtub.

Step 3 – Set Waste Assembly

Assemble the component of the trip lever or waste assembly as per the instructions given by the manufacturer. However, let the connections be loose for repositioning.

Step 4 – Drain Assembly

Fit the rubber gasket to the back of the bathtub in the place where the trip lever will be. Assemble the bottom portion of the drain assembly to the drainage hole of the bathtub. Now install the drain at this bottom portion of the bathtub. For this you should apply a thin layer of putty at the lower end of the drain flange. Then screw them tightly.

Step 5 – Trip Lever Assembly

Now add the trip lever assembly to the top hole in the fiberglass bathtub and fasten them with a screwdriver.

Step 6 – Set the Tub

Position the bathtub on the supportive wooden frame and check for levelness and the plumbing connections. You can use wooden shims to adjust for the level of the tub (if necessary).

Step 7 – Diverter Assembly

From the center of the back of the tub and from a height at least 1 inch above the tub’s top, mark a spot for fixing the diverter. Drill holes from the back of the tub and then fit the copper diverter fittings in the diverter. Secure the diverter from the back of the bathtub. Join the diverter and the spout with a pipe.

Step 8 – Water Connection

Add water supply lines to the sides of the diverter. If you are adding a shower riser, add a pipe to the diverter’s top. Attach a support block for supporting the shower riser between two wall studs. Now tighten all the connections and fittings if you feel the installation is perfect.