1. Check the pipe blank and measure
Before installing a new tub, make sure the area is pre-cast and the proper studs and dimensions are installed. This means checking the width, length, and depth of the area to ensure the tub fits perfectly. Ask the manufacturer for a pre-cast drawing to ensure everything is laid out correctly.
Before building the wall frame, make sure the dimensions and tub size are correct. An improper wall frame may make the tub difficult to install or require additional adjustments later.
You also need to make sure the tub has a flat surface and drains well. An uneven tub can cause water to pool.
2. Turn off the water
Before installing the tub, make sure the main water supply to the tub is turned off. Failure to do so could result in water damage and costly repairs. Typically, the water shutoff valve is located near the tub plumbing.
Bonus tip: When installing the tub, it's also a good time to check for leaks. Common signs of leaks include warping of the wall, musty odors, and damage to the ceiling or floor. Be sure to fix any leaks before installing the tub to avoid further damage and problems.
3. Carefully consider the choice of tub drain and overflow system
Prepare the tub, assemble and install the drain and overflow pipes, and install them to the designated location of the tub. Make sure all connections are secure to prevent future leaks. Depending on the design of the tub, you may need to cut and position the pipes correctly. Cut the pipes to the required length and make sure the connections are tight and secure.
4. Level the Subfloor
Before installing the tub, use a level to make sure it is perfectly balanced. This leveling is essential for smooth drainage. As mentioned above, improperly tilted tubs can cause water to pool. Additionally, proper leveling maintains the tub's stability. If your subfloor is uneven, use shims or a cement-based product to achieve a level surface.
5. Set up the tub according to the manufacturer's guidelines
Once you have the tub drain and overflow system installed, it's time to install the tub. Since every tub is different, following the manufacturer's recommendations is essential to ensure the tub is installed correctly.
Depending on the type of tub, you may need to lay concrete under the tub as a base. Some tubs use stringers (an additional 2x4-inch strip of wood that attaches to the uprights that the tub is mounted on) for additional support. Before you secure the tub, use a level to make sure the tub is perfectly balanced. Again, this is essential for the stability of the drain and fixtures. If necessary, use shims to keep the surface level.
The type of support system varies by manufacturer, so choose the one that is most compatible with your tub. Improper supports can cause the tub to flex and move, which can lead to leaks and damage.
6. Test the plumbing
After the tub is installed, you must install the water valve and water supply pipes. After that, connect the pipes to the P-trap and the tub sewage and overflow system to the sanitary system. This process will vary depending on whether the pipes are located in the floor joists or in the wall.
After the tub is connected to the plumbing system, check that the connection is waterproof. This can be done by running pressurized water through the system and then checking the connection points.
The spout will not be installed until the surrounding walls are finished.
7. Protect your bathtub
Accidents are bound to happen during renovations. Protect your new bathtub from scratches, stains, and dents with a bathtub protector.
Plastic or cardboard covers can also protect fixtures like sinks and urinals from debris and damage during construction.
8. Choose the right wall panels
Now that the tub and plumbing are installed, it's time to install the wall panels. If you plan to replace the acrylic surround with tile, you'll need to use a certified shower wall panel to protect the underlying structure from water damage.
9. Seal the Tub
To protect your tile or acrylic surround tub from water damage, use silicone sealant or caulk to seal areas where water may seep in. Failure to do so may result in water damage and mold growth. Water seepage behind the tub may cause structural damage to the wood frame.
Installing a bathtub is no easy task. A successful installation can increase the value of your home and transform your bathroom space into a haven of relaxation. Follow these tips and tricks and your next bathroom renovation will be a breeze.
