Many homeowners find themselves wanting to replace an old bathtub with a new shower. This often requires replacing the tub with a preformed shower pan and completely redoing the plumbing. There are a few factors to consider when determining if a tub can be directly replaced with a shower pan or if more extensive renovations are required. In this article, we’ll explore the key considerations around replacing a tub with a shower pan.
Page Contents
Key Factors
There are three main factors that determine if a tub can be directly replaced with a shower pan:
Tub and Shower Pan Dimensions
The most important factor is the dimensions of the existing tub and the new shower pan. Most standard 5 ft tubs are 60 inches long by 32 inches wide. Meanwhile, most shower pans are 32-36 inches wide and 48-60 inches long. So if the tub is a standard size, it’s often possible to fit a smaller shower pan of the same width directly into the existing tub space. However, if the tub is an unusual size, the dimensions may not align with available shower pans.
Plumbing Locations
The next key factor is the location of the existing plumbing. When replacing a tub with a shower, the new shower pan will need to fit around the existing drain and supply lines. If the plumbing fixtures are not aligned properly in the wall or floor, the new shower pan may not be compatible. Some minor adjustments can be made, but major plumbing renovations will make direct replacement impossible.
Tub Alcove Dimensions
Finally, the size of the tub alcove is important. Shower pans are thicker than bathtubs, so the alcove framing and drywall will need to accommodate this extra thickness. If the existing tub alcove is very narrow, there may not be room for a full shower pan installation. The walls may need to be rebuilt to create the needed space.
Tub to Shower Conversion Process
If the existing tub does meet the requirements for direct shower pan replacement, the full process involves:
Remove the Tub
First, remove the existing tub. This includes detaching the drain and supply lines. The tub can then be slid out or carried out if possible. Removing walls or windows may be necessary for large tubs.
Inspect and Repair Subfloor
With the tub removed, inspect the subfloor for any water damage or needed repairs. A shower conversion is a good opportunity to make sure the subfloor is sturdy and waterproofed. Make any necessary repairs before installing the new pan.
Install the New Shower Pan
Once the subfloor is prepped, the new shower pan can be put in place. The pan should align with the drain pipe stub-outs. Secure the pan firmly to the subfloor. If needed, shim the pan to make sure it is level and stable.
Connect Plumbing Lines
With the pan positioned, reconnect the drain line ensuring a water-tight seal. Then reconnect the hot and cold supply lines. At this point, the plumbing can be tested for leaks before continuing.
Build Out Walls
If the new shower pan is larger than the original tub, the walls will likely need to be furred out with additional framing. Cement board or a waterproof membrane will be installed over new walls. This creates a water-tight shower enclosure.
Install Fixtures and Finishes
Finally, install the showerhead, valves, tile, and other fixtures. The shower door or curtain rod can be added to complete the new shower conversion.
Advantages of Tub to Shower Conversions
There are several benefits that come with replacing a tub with a shower:
- Improved accessibility – Walk in showers are easier to enter and exit.
- More space – Shower pans better utilize space compared to deep bathtubs.
- Lower maintenance – Showers are easier to clean and require less caulking.
- Modern style – Showers provide a sleek, contemporary look.
- Increased property value – Bathroom updates like showers add home value.
For many homeowners, a tub to shower conversion brings the bathroom better function and added style. The project can often be completed in 2-3 days by an experienced contractor.
Signs It’s Time to Replace Your Tub
Here are some signs that indicate it may be time to replace an old, outdated tub:
- Frequent clogs or slow drains – This signals possible issues with the drain pipes.
- Chipped, worn enamel – Porcelain enamel tubs can begin to show wear after many years.
- Stains and discoloration – Stubborn stains diminish the appeal of the tub.
- Outdated style – Some prefer to update old tubs to match modern decor.
- Space issues – A smaller tub or walk-in shower can optimize use of space.
- Safety concerns – Lack of grab bars or non-slip texture create hazards.
- Comfort issues – For example, short tubs don’t allow soaking in comfort.
If the cons of an aging tub are outweighing the pros, a replacement shower conversion could be beneficial.
Cost to Replace Bathtub with Shower
Converting a tub to a shower is a significant project that requires professional installation in most cases. Here is an overview of the costs:
Shower Pan Cost
Preformed shower pans range from $300-700 depending on the size and material. Fiberglass or acrylic pans tend to be cheaper while stone resin pans cost more. Many custom sizes and shapes are available.
Plumbing Cost
Some minor plumbing alterations may be needed. This can range from $200-500 if the pipes require relocating or extending. Complex replumbing can cost $2,000 or more.
Bathroom Remodeling Cost
If walls, tiles, lighting and other finishes need replacement, total costs can be $4,000 to $12,000+. The sky is the limit for high-end showers with custom tiles and glass doors.
Total Average Cost
The typical total cost to replace a tub with a basic shower is often $3,000 to $7,000. Complex conversions with bathroom remodels can be $10,000 or more.
Should I Convert My Tub to a Walk-in Shower?
Deciding between keeping your tub or replacing with a shower is a personal choice based on your needs. Here are some key factors to help determine if a walk-in shower is right for you:
Bathing Needs
Do you take frequent baths? Soaking in a tub may be important for your bathing routine. For strictly showering, a new shower stall may suffice.
Accessibility
A walk-in shower is much easier to enter and exit. If mobility is a concern, a shower may be a wise renovation.
Bathroom Size
Since showers take up less floor space, small bathrooms can benefit from a tub replacement with a space-saving shower.
Budget
Converting to a shower is a major renovation. Make sure your budget allows for the project costs involved.
Resale Value
Walk-in showers are desirable features for home buyers. Boosting your resale value may make the project worth the upfront investment.
Carefully weighing your needs and options will determine if swapping your tub for a new walk-in shower is the right decision. An aging, problematic tub may make the choice easier.
Tub to Shower Conversion Tips
If you decide move forward with replacing your tub with a shower, keep these tips in mind:
- Hire a licensed, professional contractor for best results.
- Check that shower pan dimensions match your existing tub size.
- Make sure the ceiling height accommodates a shower head.
- Remove tub faucets and valves before installing shower fixtures.
- Consider adding accessories like a folding seat or grab bars.
- Use a watertight plastic membrane behind shower walls.
- Sloped or curbed shower floors aid drainage.
- Avoid glossy shower tiles which can be slippery.
- Update lighting and ventilation when renovating.
With proper planning and execution, your new walk-in shower can provide an inviting, spa-like experience for years to come.
FAQ on Converting Bathtub to Shower
Here are answers to some frequently asked questions about replacing a tub with a shower pan:
Can any bathtub be replaced with a shower?
In most cases, yes. Standard alcove tubs in common sizes can usually be swapped for a shower pan without major issues. Rare or antique tubs may be more difficult.
How long does it take to change a tub to a shower?
The entire project typically takes 2-3 days with demolition, installing the new pan, plumbing, and rebuild of shower walls. More complex renovations can extend the timeline.
What are shower pans made of?
Shower pans are commonly made of molded acrylic, fiberglass, Vikrell, or cultured marble. Some are also made of stone resin, porcelain, or stainless steel.
Can I install a shower pan myself?
It’s possible for handy homeowners, but professional installers are strongly recommended. The process involves plumbing, waterproofing, tiling, and carpentry skills.
How is a shower pan installed?
The install involves removing the tub, putting the new pan in place, connecting plumbing, building out surrounding walls, waterproofing, adding tiles, then installing shower fixtures.
Can I put a shower pan in a pedestal tub?
Removing a standalone pedestal tub and installing a shower pan is often more complex. The floor has to be opened up and new plumbing added.
Conclusion
Replacing an old, worn out tub with a new shower pan offers many advantages. Key considerations include the dimensions, plumbing locations, and tear-out process. When properly planned and executed, this project can create an inviting, low-maintenance shower area. However, for owners who still enjoy soaking baths, keeping the tub may be the best option. Thinking through your needs, budget, and goals will determine if swapping your tub for a shower is the right remodeling decision. With the help of skilled professionals, you can upgrade to a shower that provides added space, convenience, and aesthetic appeal.