Choosing the best cement board for a shower project hinges on water resistance, ease of installation, and long-term durability. This guide profiles five top options, highlighting who each product is best for, and why it’s a strong pick for shower walls and floors. Ideal buyers include DIY homeowners tackling new shower builds, remodelers seeking faster installation, and professionals prioritizing reliable moisture defense.
The following buying table summarizes key details to help you compare quickly:
| Product | |||
|---|---|---|---|
| Ardex Waterproof Lightweight Vapor-Resistant Cementitious XPS Foam Board | XPS Foam Panel with Fiberglass Mesh | Waterproof shower enclosures; fast installations | Specialty compatibility; needs proper seam treatment |
| Shower Backer Board GoBoard (48x32x1/2) | Extruded polystyrene (EPS) backer board | Widely adaptable shower and wall applications | Size variations in packaging may affect coverage |
| QEP 99605 Cement Board Joint Tape | Fiberglass mesh joint tape | Fast, self-adhesive joints for cement boards | Tape alone; needs compatible cement board substrate |
| Innconee Cement Board Joint Tape | Fiberglass mesh joint tape | High humidity environments; long runs | Bulk roll requires careful alignment |
| Schluter Kerdi Board Shower Curb | Kerdi-Board curb component | Schluter shower systems; unified curb solution | Part of a system; needs compatible components |
Ardex Waterproof Lightweight XPS Foam Board With Fiberglass Mesh
Best for projects demanding a fully waterproof enclosure with quick tiling workflows. The XPS foam core provides rigidity and low weight, while an alkali-resistant mesh helps prevent delamination. This panel is designed to work with Ardex TLT shower systems for a seamless installation. Best for professional remodels and DIYers who seek fast, reliable waterproofing with strong bonding. Caution: ensure proper seam treatment and compatible adhesives to maximize waterproof performance.
GoBoard 48×32 Shower Backer Board (1/2″ Pack)
Best for versatile shower and bathroom projects where a stable, waterproof substrate is needed. GoBoard combines durable EPS with reinforced edges for stability and strong waterproofing. It’s well-suited for walls, shower curbs, countertops, and concealing pipes. Choose this if you want a widely compatible backer board with straightforward installation. Limitation: packaging size can slightly affect coverage estimates, so plan accordingly.
QEP 99605 Cement Board Joint Tape
Best for clean, fast finishing of cement board joints. The fiberglass mesh tape is self-adhesive, helping to reduce taping time and promote smooth mortar or thinset applications. Opt for this when you want reliable joint integrity without extra tools. Caution: tape alone won’t waterproof a system; pair with compatible cement boards and waterproof coatings.
Innconee Cement Board Joint Tape
Best for high humidity environments where moisture resistance matters. This 350 ft by 2 inch tape uses alkali-resistant fiberglass mesh with self-adhesive backing for quick application. It’s ideal for bathrooms, kitchens, and areas with heavy moisture exposure. Limitation: larger rolls may require careful handling to avoid creasing during application.
Schluter Kerdi Board Shower Curb
Best for integrated Schluter shower systems where a consistent curb solution is required. The curb is made from Kerdi-Board and is designed to work seamlessly with Schluter’s shower components, ensuring cohesive waterproofing and installation simplicity. Choose this if you are building a complete Schluter system. Limitation: it works best within a Schluter ecosystem; compatibility with non-Schluter products may require additional adaptation.
Goldblatt Cement Board Tape and Screws Set
Best for comprehensive repair or install kits where both tape and fasteners are needed. The set includes alkali-resistant cement board tape and a bulk supply of screws with corrosion resistance, designed for high-moisture areas such as showers and backsplashes. Choose this for a ready-to-go install kit. Caution: always verify screw length matches your substrate thickness to avoid protrusions.
Buying Guide: Cement Board For Shower Substrates
- Waterproofing compatibility: Select panels or tapes designed for shower environments. Foam-core boards with fiberglass mesh, or cement board systems, offer water resistance when paired with proper sealants and membranes.
- Substrate compatibility: If you’re installing on wooden studs, ensure screws and fasteners are rated for moisture-rich areas. If you’re using foam boards, confirm adhesive and seam products are compatible with XPS or EPS cores.
- Installation speed vs. durability: Lightweight foam boards and pre-matted backer boards speed up installation, but cement board joints with high-quality tapes support long-term moisture control.
- System integration: Some products are designed to work within specific shower systems (for example, Schluter Kerdi). When selecting, consider whether you want a system-wide approach or a flexible, independent substrate.
- Curb and thresholds: For a complete shower, curbs and thresholds may require dedicated components. Kerdi Board curbs provide cohesive waterproofing with Kerdi systems, while other brands offer compatible alternatives.
- Professional vs. DIY: DIY projects benefit from clear adhesive instructions and self-adhesive tapes. Pros may opt for systems with tested waterproofing membranes and warranty considerations.
FAQ
- What cement board is best for showers?
– Both cement boards and cement board alternatives like high-density foam cores with fiberglass mesh can perform well in showers when properly sealed and installed with the right membranes. - Are joint tapes necessary for cement boards?
– Yes, joint tapes help reduce cracking in joints and reinforce edges; they must be compatible with the board substrate and waterproofing method used. - Can I mix brands for a shower project?
– It’s possible, but ensure compatibility between panels, tapes, and membranes. When in doubt, follow the system recommendations from the manufacturer. - Do I need a shower system for Kerdi Board products?
– Kerdi Board products are designed to integrate with Schluter shower systems for a unified waterproofing approach. - What should I consider for curved or irregular shower walls?
– Flexible membranes and compatible panels, as well as carefully planned seams and corner treatments, help maintain waterproof integrity on irregular shapes. - How large should a cement board sheet be?
– Common sizes include 32×48 inches or 48×96 inches, but verify your bathroom dimensions and cutting plans before purchasing.