Installing a walk-in shower has become one of the most common choices in bathroom renovations. This is not only for aesthetic reasons, but also for comfort, accessibility, and that sense of spaciousness that is increasingly sought after in today’s living spaces.
However, there is one question that often comes up at this point: How can you prevent leaks after installation?
At Bañototal, we’re clear about one thing: installing a shower pan isn’t just about replacing a part. It’s a technical process where proper installation and the leak-proofing system are key. Most problems aren’t caused by the shower pan itself, but rather by a poorly executed installation or an inadequate leak-proofing system. Below, we’ll explain everything you need to keep in mind to avoid mistakes that can end up costing you a lot over time.

Key Factors for Lasting Results
Leaks usually occur when one of the components of the system fails or has not been installed properly. To ensure a bathroom free of moisture, it is essential to understand that success depends on how these critical points are managed:
- Preparing the base: This is one of the most important steps. It is vital that the base be level and have the proper slope toward the drain. Otherwise, water will not drain properly, and standing water will eventually seep through. Furthermore, a poorly prepared base creates stresses that affect the stability and durability of the shower pan.
- The leak-proofing system: this is what makes all the difference. Poor installation allows water to seep through joints or corners. The problem starts out invisible but eventually manifests as dampness, floor damage, or mold. Waterproofing is an essential part of the process, not just an extra.
- Drainage and sealing: These are the most sensitive areas. A small flaw in the connection or insufficient sealing at the joints can ruin the entire job, as they are constantly exposed to the direct flow of water.
Standards for a Successful Professional Installation
For a high-quality shower pan to maintain its performance, the technical process must adhere to these strict standards:
1. Technical Preparation of the Substrate
The surface must be in perfect condition: level, dry, and free of debris. A key consideration when aiming for a flush-to-floor finish is the plumbing installation, specifically the P-trap. There must be a sufficient slope from the valve toward the trap; if the house’s construction does not allow for this slope, the toilet bowl cannot be installed completely flush and must be raised slightly to ensure that water drains properly. Likewise, it is essential to plan the drain opening precisely according to the chosen model.
2. Integration of the waterproofing system
We apply technical waterproofing solutions to the entire surface and at the critical junctions between the floor and the wall. At Bañototal, we know that a watertight barrier is the only real protection against structural damage.
3. Installation and testing of the drain
The valve must be perfectly aligned and sealed. Before proceeding to seat the disc, it is mandatory to perform a leak test to verify that the exhaust system is leak-free.
4. Installing the shower pan
Specific bonding materials must be used to ensure complete and uniform adhesion, thereby preventing mechanical stresses that could compromise the seal of the perimeter joints.
5. High-strength perimeter seal
The joints must be sealed with sanitary sealants that retain their elasticity and antifungal properties. This sealing is not just for aesthetic purposes; it is the last line of technical defense against heavy use.
Types of Shower Trays to Choose From to Prevent Leaks
At Bañototal, we offer a wide range of shower pans designed for everyday use: from slip-resistant and durable surfaces to easy-to-maintain materials. Thanks to the variety of sizes, colors, and textures, it’s very easy to find the piece that best fits your bathroom to achieve a modern, functional, and, above all, durable renovation.
- Ultra-Thin Shower Trays
Ultra-flat shower pans allow you to create a cohesive bathroom design with maximum accessibility. Made from durable, high-quality materials—such as the Fornells series (a specific model of ultra-flat resin shower pan)—they help create an elegant and functional space by eliminating visual barriers. At Bañototal, we offer easy-to-install, slip-resistant models designed for those seeking safety and easy maintenance in modern-style bathrooms.
- Shower Trays with a Rim
Shower pans with a rim are a very practical option for those looking for safety and a more classic look. In addition to facilitating drainage, their raised design is key to preventing water from overflowing and spilling out of the shower pan in the event that the drain becomes clogged with dirt or hair—a feature that makes them especially practical for quick renovations or family bathrooms. At Bañototal, you’ll find a variety of models in different materials and finishes that adapt the durability of traditional design to today’s needs for style and comfort.

Mistakes That Compromise the Warranty and Durability
Throughout our career as specialists, we have identified flaws that render any good product choice ineffective:
- Omit the membrane or waterproofing system under the shower pan.
- Forcing the drain's position without taking natural slopes into account.
- Using non-professional-grade silicones that break down when exposed to cleaning products.
What is the result of good execution?
Proper installation ensures that you can enjoy a functional, safe, and completely leak-free bathroom. At Bañototal, we manufacture and select the best materials to ensure long-lasting results. Because the difference isn’t apparent on the first day—it’s in the peace of mind that comes from knowing your bathroom will remain protected for years to come.
Planning and Budgeting: How to Get the Most Out of Your Investment
Beyond the technical aspects, a trouble-free installation stems from smart planning.
Replacing a bathtub with a shower stall is an opportunity to improve safety and efficiency. Based on our experience at Bañototal, here are the keys to making your project a success:
- Control the cost of materials:By choosing the shower pan, shower enclosure, and faucets yourself at our store, you avoid additional costs from middlemen. You control the quality and the exact budget.
- Choose the quality standard: We recommend mineral-filled resinshower pans because they are sturdy, ultra-flat, and feature a slip-resistant finish. Unlike ceramic pans, these do not crack, which prevents water from seeping through the pan itself, making them more durable.
- Preventive technical inspections:If your home is more than 20 years old, it’s essential to inspect the plumbing during the renovation to replace old lead or iron pipes with modern materials such as copper or multilayer pipes. This will prevent future internal leaks.
- Save money with standard sizes: Choosing standard-sized plates—such as 100, 120, or 140 cm—is more economical than custom sizes.
- Design for the “gap” left by the bathtub:when the bathtub is removed, an area without tiles will remain. We recommend creating a contrasting area with a different material, turning a technical necessity into a decorative feature. But this isn’t just about aesthetics—it also ensures a secure seal between the wall and the floor, which is a critical point for waterproofing to prevent water from seeping behind the tiles.
Is it worth installing a walk-in shower?
The answer is yes; a well-designed installation improves the bathroom's appearance, functionality, and safety.
At Bañototal, we work to ensure you have control over your renovation from the very beginning. Because a well-done bathroom isn't something you notice on the first day… you notice it as the years go by and everything continues to work just as well as it did on day one.

Discover our shower pans and shower enclosures, and start your renovation with the peace of mind that comes from making the right choice from the very beginning.
💡 You might also be interested in: How much does it cost to replace a bathtub with a shower stall?

