Curbless Shower Installation
January 27th, 2026 | by Nick Kayser | Posted in
At Mustache Approved Remodeling, we specialize in curbless shower installation throughout the East Valley, including Gilbert, Chandler, Mesa, Tempe, Scottsdale, and Ahwatukee.
Curbless showers—also called walk-in showers, barrier-free showers, or zero-entry showers—offer a sleek, modern aesthetic combined with practical accessibility benefits. However, they require precise floor modifications, expert waterproofing, and careful installation to perform correctly and avoid water damage. Our shower waterproofing system protects every surface—walls, floors, benches, niches, and transitions—ensuring your shower is built to last. Curbless showers are often installed during tub-to-shower conversions for maximum accessibility. See your finished space before we build with our Virtual Showroom 3D design consultation.
As a licensed general contractor (ROC #309760), we handle every phase of your curbless shower installation with our proven S.W.A.N. Plan waterproofing system, ensuring your shower delivers lasting beauty, function, and peace of mind.
For comprehensive information about bathroom renovations, visit our bathroom remodeling services page or our Bathroom FAQs. We offer master bathroom remodeling and small bathroom remodeling for guest baths, hall baths, and powder rooms. Learn more about our complete bathroom remodeler services throughout the East Valley.
For information about all shower services, visit our complete shower installation guide covering walk-in showers, curbless showers, tub-to-shower conversions, and professional tile installation throughout the East Valley.
Watch: Curbless Shower Installation Project
What Is a Curbless Shower?
A curbless shower is a shower design without a raised threshold or curb at the entry point. The shower floor transitions seamlessly with the bathroom floor, creating an open, flowing space that feels larger and more luxurious.
This design eliminates the traditional barrier that separates the shower from the rest of the bathroom. Instead of stepping over a curb, you simply walk directly into the shower area. The result is a clean, minimalist look that has become increasingly popular in modern bathroom design throughout the East Valley.
However, curbless showers are not simply regular showers with the curb removed. They require significant structural modifications, precise slope calculations, and complete waterproofing systems to ensure water drains properly without spilling into adjacent areas of the bathroom.
Benefits of Curbless Shower Installation
Modern, Open Design
Curbless showers create a visually seamless space that makes bathrooms feel larger and more open. Without the visual interruption of a shower curb, the entire bathroom flows together as one cohesive design.
This open aesthetic is particularly valuable in smaller East Valley bathrooms where every square foot of visual space counts. The continuous floor line creates the illusion of expanded square footage while delivering a high-end, contemporary look.
Improved Accessibility and Aging in Place
One of the most practical benefits of curbless showers is improved accessibility. By eliminating the raised threshold, curbless showers:
- Remove tripping hazards for all family members
- Allow easy wheelchair or walker access
- Support aging in place for long-term homeowners
- Benefit families with young children
- Accommodate anyone with mobility challenges
For homeowners planning to stay in their East Valley homes long-term, a curbless shower is one of the most valuable accessibility upgrades available.
Easier Cleaning and Maintenance
Shower curbs collect soap scum, grime, and mildew in the corners and along the top edge. Curbless showers eliminate this problem entirely.
With a continuous floor surface, cleaning becomes faster and simpler. You can squeegee or mop the entire shower floor in one motion without navigating around a raised barrier.
Increased Home Value
Curbless showers are a sought-after feature among modern home buyers, particularly those looking for contemporary design or accessible features. A well-executed curbless shower installation can increase your home’s resale appeal and market value throughout competitive East Valley markets.
For more information about bathroom remodeling costs and value, visit our bathroom remodeling cost guide.
The Installation Process: What to Expect
Floor Structure Evaluation
The first step in any curbless shower project is evaluating your home’s floor structure. This determines whether curbless construction is feasible and what modifications will be required.
Homes with slab foundations (common throughout Gilbert, Chandler, and Mesa) typically require the shower pan to be recessed into the concrete slab. This creates the necessary drainage slope while keeping the shower floor level with the bathroom floor.
Homes with raised foundations or crawl spaces often have more flexibility, as the shower pan can be recessed into the floor joists without cutting concrete.
Post-tension slab foundations present unique challenges. These foundations contain high-strength steel cables under tension throughout the concrete. Cutting into a post-tension slab can damage these cables and compromise structural integrity. Many East Valley homes built after the mid-1990s use post-tension construction. If your home has a post-tension slab, we’ll evaluate alternative options during consultation.
Upstairs bathrooms with engineered floor trusses or I-joist systems may not accommodate the floor modifications required for curbless showers without compromising structural safety.
During your consultation, we inspect your foundation type and floor structure to determine the best approach for your specific home.
See our complete shower tile installation process and leveling system.
Demolition and Floor Modification
Once we confirm your home can accommodate curbless construction, we begin with careful demolition of the existing shower or tub area.
For slab foundations, we use specialized concrete cutting equipment to recess the shower pan area into the slab. This work requires precision to create the proper depth for drainage slope while maintaining structural integrity.
For raised foundations, we modify floor joists and framing to accommodate the recessed shower pan system.
This structural work typically takes 3–5 days depending on your home’s foundation type and the complexity of modifications required.
Plumbing Rough-In and Drainage
Proper drainage is critical for curbless shower performance. We install or relocate shower drains to the optimal position for your layout, ensuring adequate drainage capacity for the shower size.
Linear drains positioned near the shower entry provide excellent drainage performance and allow for simpler slope work across the shower floor. Traditional center drains also work well when positioned correctly.
All plumbing work is completed to code and inspected before proceeding to waterproofing and tile installation.
Shower Pan Installation and Slope Work
The shower pan forms the foundation of your curbless shower. We install professional-grade shower pan systems designed specifically for curbless applications, ensuring proper slope and drainage performance.
Slope work is one of the most critical aspects of curbless shower installation. The shower floor must slope toward the drain at the correct gradient—typically 1/4 inch per foot minimum. This slope must be precise enough to prevent water pooling while remaining comfortable and safe underfoot.
Our team uses professional tile leveling systems and slope gauges to ensure accuracy throughout the installation process.
Our S.W.A.N. Plan Waterproofing System
Waterproofing is the single most important factor in curbless shower longevity and performance. Without a curb to contain water, the waterproofing system becomes your primary defense against water damage, mold growth, and structural failure.
At Mustache Approved Remodeling, every curbless shower receives our comprehensive S.W.A.N. Plan (Sleep Well At Night) waterproofing treatment. Shower Waterproofing – Professional waterproofing services for showers and tub surrounds
What the S.W.A.N. Plan Includes
Laticrete Hydro Ban Liquid-Applied Waterproofing
We use industry-leading Laticrete Hydro Ban waterproofing membrane applied to all shower surfaces—not just seams and corners. This liquid-applied membrane creates a continuous, flexible waterproof barrier that moves with your home’s natural settling and expansion.
Hydro Ban Board or Professional-Grade Cement Board
All shower walls and floors receive Hydro Ban Board or cement board substrate that provides structural support and moisture resistance. This professional-grade backing ensures your tile installation has a solid, stable foundation.
Crack-Isolation Membranes
Arizona’s challenging foundation conditions—including soil movement, settling, and temperature fluctuations—require additional protection. We install crack-isolation membranes that protect against movement and prevent cracks from telegraphing through to your tile surface.
Complete Surface Coverage
We waterproof the entire shower system:
- All shower walls from floor to ceiling
- Shower floor and pan area
- Transitions between shower and bathroom floor
- All corners, seams, and penetrations
- Niches, benches, and built-in features
- Drainage areas and around drain assemblies
Professional Seam Sealing
Every joint, corner, penetration, and transition receives professional sealing and reinforcement. We use Laticrete sealing tape and additional membrane applications at all critical areas to ensure complete water protection.
Proper Curing Time
Unlike contractors who rush through waterproofing, we allow 24–48 hours of curing time before proceeding to tile installation. This ensures complete adhesion, proper performance, and maximum durability.
Quality Inspection
Before any tile is installed, we perform thorough inspection of the waterproofing system to ensure complete coverage and proper application throughout the shower area.
This comprehensive approach is what separates a Mustache Approved curbless shower from basic installations that cut corners on waterproofing. Many contractors only waterproof seams or use thin, rushed applications that fail within a few years. Our full-system approach ensures your curbless shower performs flawlessly for decades.
For a detailed breakdown of our waterproofing process, read our complete S.W.A.N. Plan guide or watch our waterproofing process video.
Tile Installation and Design
Tile Selection for Curbless Showers
Tile selection plays an important role in curbless shower performance and safety. We recommend:
Smaller format tiles (2×2 inch or mosaic patterns) for shower floors. These allow for better slope transitions and provide improved slip resistance through increased grout lines.
Larger format tiles can be used on shower walls for a clean, modern look with minimal grout lines.
Textured or matte finishes rather than polished tiles for shower floors. Slip resistance is essential in curbless designs where water flow is less contained.
Porcelain tiles for durability and low water absorption, particularly in Arizona’s climate where temperature fluctuations can affect tile performance.
During your consultation and design phase, we’ll help you select tiles that balance aesthetics, safety, and performance for your specific project.
Tile Installation Process
Our tile installation process includes:
Professional Tile Leveling Systems
We use professional tile leveling systems throughout installation to ensure consistent grout lines, proper slope maintenance, and a flawless finished appearance.
Proper Thinset Application
We use premium thinset mortar applied at the correct thickness to ensure strong adhesion and long-term durability.
Precise Slope Verification
Throughout tile installation, we continuously verify slope accuracy to ensure proper drainage performance.
Quality Grout Application
We use high-quality grout products with proper sealing to protect against water infiltration and staining.
Tile installation for curbless showers typically takes 5–7 days depending on shower size, tile complexity, and design details.
Glass Panel Installation
While curbless showers don’t have a traditional curb, most designs include a glass panel or partial enclosure to contain water spray while maintaining the open, airy aesthetic.
Glass panel considerations include:
Panel Placement
Strategic glass positioning helps contain shower spray while preserving the open feel of the curbless design. We evaluate shower head placement, drain location, and bathroom layout to determine optimal glass configuration.
Glass Height and Width
Glass panels typically extend 72–78 inches high and vary in width based on shower size and layout. We help you balance water containment with visual openness during the design phase.
Hardware Selection
We offer various hardware finishes to match your bathroom fixtures and design aesthetic, including chrome, brushed nickel, matte black, and oil-rubbed bronze.
Fixed vs. Hinged Panels
Some curbless showers use fixed glass panels, while others incorporate hinged doors for traditional enclosure feel. We’ll help you determine the best option for your space and preferences.
Glass is typically measured after tile installation is complete and installed during the final week of your project.
Design Considerations for Curbless Showers
Shower Floor and Bathroom Floor Continuity
One of the most striking design features of curbless showers is continuous flooring that flows from the bathroom into the shower without interruption.
Many homeowners choose to extend the same tile from the bathroom floor into the curbless shower area. This creates maximum visual continuity and makes the space feel larger.
Alternatively, you can use different tiles for the shower floor—typically smaller format with better slip resistance—while maintaining a complementary color palette and design aesthetic.
Drainage System Options
Traditional Center Drains
Positioned in the center or optimal location within the shower floor, center drains work well for most curbless applications and offer various finish options to match your fixtures.
Linear Drains
Modern linear drains positioned at the shower entry provide excellent drainage performance and allow for simpler slope work across the shower floor. Linear drains create a contemporary look and can be positioned to minimize visible slope.
Channel Drains
Similar to linear drains but typically wider, channel drains offer maximum drainage capacity for larger shower areas.
During design consultation, we’ll help you select the drainage system that best fits your shower size, layout, and aesthetic preferences.
Built-In Features
Curbless showers can incorporate various built-in features:
Shower Niches
Recessed niches provide convenient storage for shampoo, soap, and toiletries while maintaining clean lines. Niches require complete waterproofing and proper slope to prevent water accumulation.
Shower Benches
Built-in benches add comfort and functionality, particularly for aging-in-place applications. Benches must be properly sloped and fully waterproofed.
Multiple Shower Heads
Curbless designs work beautifully with multiple shower heads, rain heads, or body sprays. Proper drainage capacity becomes even more important with higher water flow.
All built-in features receive the same comprehensive waterproofing treatment as the rest of your shower system.
Timeline for Curbless Shower Installation
Curbless shower installations typically take 4–6 weeks depending on your home’s foundation type, shower size, tile complexity, and inspection schedules.
Week 1: Demolition, Floor Modification, and Plumbing
Existing shower removal, concrete cutting (if needed), floor structure modifications, and plumbing rough-in completed.
Week 2: Waterproofing and Start Tile
Complete S.W.A.N. Plan waterproofing system application with proper curing time, then tile installation begins.
Week 3: Continue Tile Installation
Tile installation continues with precise slope work, professional leveling systems, and quality control throughout.
Week 4: Finish Tile, Measure Door, & Trim Out
Final tile installation completed, grout application, measure shower door, and trim work finished.
Week 5: Glass Fabrication (No work while fabrication)
Waiting on glass fabrication (10-business days).
Week 6: Glass Installation
Shower glass door installation, final fixture adjustments, inspection, and project walkthrough.
Homes with slab foundations typically require additional time in Week 1 for concrete cutting and pan recessing. Complex tile patterns or larger shower areas may extend the tile installation phase.
For more information about bathroom remodeling timelines, visit our Bathroom FAQs page.
Cost of Curbless Shower Installation
Curbless shower installations typically add $2,500–$3,500 to standard shower installation costs due to additional structural work, waterproofing requirements, and precision installation demands.
Total curbless shower project costs vary based on:
- Floor modification complexity (slab cutting, joist modification, pan recessing)
- Shower size and layout
- Tile selection and design complexity
- Glass panel size and style
- Built-in features (niches, benches, multiple heads)
- Drainage system type
Most complete curbless shower installations in the East Valley range from $25,000–$35,000+ as part of a full bathroom remodel, depending on the factors above.
For detailed bathroom remodeling cost information, visit our bathroom cost guide.
When Curbless Showers Aren’t Recommended
Post-Tension Slab Foundations
If your home has a post-tension slab foundation, we typically do not recommend curbless shower installation. Post-tension slabs contain high-strength steel cables under tension running throughout the concrete. Cutting into these slabs to recess a shower pan can damage the cables, compromise structural integrity, and create serious safety concerns.
Many East Valley homes built after the mid-1990s use post-tension slab construction. During your consultation, we inspect your foundation and determine whether curbless construction is safe and feasible for your specific home.
If you have a post-tension slab, we can design beautiful walk-in showers with low-profile curbs (2–3 inches high) that minimize the barrier while maintaining structural safety.
For walk-in showers with a low curb, visit our walk-in shower installation page.
Upstairs Bathrooms with Engineered Floor Systems
Upstairs bathrooms often use engineered floor trusses or I-joist systems designed with precise load calculations. Cutting into these systems to accommodate curbless shower pans can compromise structural integrity and create dangerous failures.
For upstairs bathrooms, we evaluate existing floor structure during consultation. If modification isn’t feasible, we design low-threshold showers or raised bathroom floors that achieve similar accessibility benefits without structural risk.
Our Commitment to Structural Safety
At Mustache Approved Remodeling, we never compromise structural safety for aesthetics. If a curbless shower isn’t advisable for your home’s specific conditions, we’ll explain why clearly and present alternative solutions that deliver the function and style you’re looking for.
Curbless Showers vs. Traditional Curbed Showers
Curbless Showers:
- Seamless, modern aesthetic
- Improved accessibility
- Easier cleaning (no curb to scrub)
- Higher installation cost
- Requires floor modification
- More complex waterproofing
- Best for aging in place
Traditional Curbed Showers:
- Physical water containment barrier
- Lower installation cost
- Works with any foundation type
- Simpler installation process
- Still offers accessibility with low curbs
- Proven, time-tested design
Both options can deliver beautiful, functional results when installed correctly. The right choice depends on your priorities, budget, home structure, and long-term plans.
Maintaining Your Curbless Shower
Proper maintenance ensures your curbless shower performs beautifully for decades:
Daily Maintenance:
- Squeegee shower walls and floor after use to prevent water spots and soap buildup
- Ensure adequate bathroom ventilation during and after showers
- Wipe down glass panels to prevent hard water deposits
Weekly Maintenance:
- Clean shower surfaces with pH-neutral cleaners designed for tile and stone
- Check drain for hair and debris accumulation
- Inspect grout lines for any signs of wear
Periodic Maintenance:
- Inspect caulk joints and re-caulk if needed
- Check glass panel hardware and tighten if loose
With proper care and our comprehensive S.W.A.N. Plan waterproofing, your curbless shower will deliver reliable performance and beautiful appearance for 20+ years.
Frequently Asked Questions About Curbless Shower Installation
Do curbless showers leak more than regular showers?
No. When properly waterproofed and installed with correct slope work, curbless showers are just as watertight as traditional curbed showers. The key is complete waterproofing coverage using professional systems like our S.W.A.N. Plan and working with experienced contractors who understand curbless installation requirements.
Can you install a curbless shower on a slab foundation?
Yes, but it requires additional work. The shower pan must be recessed into the slab to create proper drainage slope. This involves cutting into the concrete, which adds complexity and time but is commonly done throughout Gilbert, Chandler, Mesa, and the East Valley. However, post-tension slabs cannot be safely cut for curbless installation.
How do you keep water from going everywhere in a curbless shower?
Proper slope work ensures water drains toward the shower drain rather than spreading into the bathroom. Strategic placement of glass panels and correct shower head positioning also help contain water within the shower zone. When designed and installed correctly, curbless showers contain water just as effectively as traditional showers.
Are curbless showers slippery?
Curbless showers are not inherently more slippery than traditional showers. We recommend textured or matte-finish tiles with good slip resistance for shower floors. Smaller format tiles with more grout lines also provide better traction. Proper tile selection ensures safety without compromising aesthetics.
Can I add a curbless shower to an existing bathroom?
Yes. Curbless showers can be added during bathroom remodels, though the feasibility depends on your home’s foundation type and floor structure. During consultation, we evaluate your existing conditions and determine whether curbless construction is possible and what modifications would be required.
Are curbless showers good for resale?
Yes. Curbless showers are a desirable feature for modern home buyers, particularly those seeking contemporary design or accessible features. A well-executed curbless shower can increase your home’s appeal and value in competitive East Valley markets like Scottsdale and Tempe.
How much does a curbless shower cost compared to a regular shower?
Curbless installations typically add $2,500–$5,000 to standard shower costs due to additional structural work, waterproofing requirements, and precision installation. Total project costs depend on shower size, tile selection, and specific features. Most complete curbless shower projects range from $25,000–$35,000+ as part of a full bathroom remodel.
What is the minimum size for a curbless shower?
While there’s no absolute minimum, curbless showers work best when at least 36 inches wide and 48 inches deep. Smaller showers can work but may require more careful glass placement and drainage planning to contain water effectively.
Why Choose Mustache Approved for Curbless Shower Installation
Licensed General Contractor (ROC #309760)
As a licensed, bonded, and insured general contractor, we handle all aspects of your curbless shower installation including permits, inspections, and code compliance.
Comprehensive S.W.A.N. Plan Waterproofing
Every curbless shower receives our complete S.W.A.N. Plan waterproofing system using Laticrete Hydro Ban for lasting protection and peace of mind.
Structural Expertise
We properly evaluate foundation types and floor structures to ensure curbless installation is safe and feasible for your specific home.
Proven Process
Our 6-step remodeling process ensures quality results, clear communication, and zero surprises from consultation through final walkthrough.
Complete Project Management
We handle every detail including demolition, structural work, plumbing, waterproofing, tile installation, glass installation, and final inspection—giving you one point of contact throughout your project.
Warranty Coverage
All curbless shower installations include our 5-year workmanship warranty plus manufacturer warranties on all materials and products.
Serving the East Valley
We proudly provide curbless shower installation and complete bathroom remodeling services throughout the East Valley, including:
Ready to Discuss Your Curbless Shower Project?
If you’re considering a curbless shower installation for your East Valley bathroom, contact Mustache Approved Remodeling to schedule a consultation. We’ll evaluate your space, discuss design options, review your home’s foundation and structure, and provide a clear plan for your project.
Additional Resources:
- Bathroom Remodeling FAQs – Common questions answered
- View Our Bathroom Project Gallery – Before and after transformations
- Are Curbless Showers Worth It? – Detailed analysis
- Bathtub Installation – Freestanding tubs, slipper tubs, jetted tubs, Roman tub decks & complete tub filler installation
- Schedule a Consultation Today
Mustache Approved Remodeling
ROC #309760 | Licensed, Bonded, Insured
Serving Gilbert, Chandler, Mesa, Tempe, Scottsdale & Ahwatukee