Posted by Wall Panels World on 18th Mar 2025
How To Install Shower Wall Panels | DIY | Watertight Seal
Shower Wall Panel Installation Guide
Transform your shower with waterproof panels for a sleek, modern, and low-maintenance finish.
View Shower Panel CollectionShower wall panels offer a practical alternative to traditional tiles, creating a waterproof, seamless surface that's easy to maintain. Unlike ceramic tiles, they require no grouting, eliminating the persistent problem of mould growth in damp areas.
This guide covers the complete installation process for shower wall panels. The techniques can be applied to various panel materials including acrylic, PVC, and composite panels, with minor adjustments noted where relevant.
Materials & Tools
Materials
- Shower Wall Panels
- Panel Trim System (internal/external corners, end caps)
- Panel Adhesive (waterproof, solvent-free)
- Silicone Sealant (bathroom-grade, anti-fungal)
- Primer (for certain wall surfaces)
- Alcohol Wipes (for cleaning)
Tools
- Fine-Toothed Saw or Jigsaw
- Hole Saw Kit (for pipe holes)
- Spirit Level
- Measuring Tape & Pencil
- Caulking Gun
- Masking Tape
- Safety Goggles & Gloves
Important: Ensure you use adhesive and sealant specifically formulated for shower environments. Standard products may fail when exposed to constant moisture and temperature fluctuations.
Preparation
Acclimatise Your Panels
Shower panels need to adjust to your bathroom's atmosphere before installation. Store them flat in the bathroom for at least 24 hours (48 hours for thicker panels). This prevents warping or buckling after installation, particularly important for waterproof integrity in shower enclosures.
Prepare the Wall Surface
Proper wall preparation is crucial for shower panels:
- Remove existing tiles, panels, or loose plaster
- Treat any visible mould with anti-fungal solution and allow to dry
- Ensure walls are completely dry, clean, and free of dust or grease
- Fill large holes or uneven areas with waterproof filler
- For highly absorbent surfaces (like fresh plaster), apply a primer
- For glossy surfaces, lightly sand to improve adhesion
The flatter and cleaner your wall surface, the better the final result. Pay particular attention to the shower area, where water exposure is highest.
Measuring & Planning
Careful planning ensures perfect fitting shower panels:
- Measure wall heights from the shower tray/bath up to required height
- Measure wall widths at top, middle, and bottom (walls may not be perfectly straight)
- Mark positions of shower fixtures, pipes, and outlets
- Plan the panel layout to minimise visible joints
- If using patterned panels, consider pattern alignment between panels
A detailed plan helps avoid costly mistakes. Always allow for a 2-3mm expansion gap around all fixtures and at the wall perimeter.
Cutting Guidelines
Precision cutting is essential for shower panels:
- Leave protective film on during cutting to prevent scratches
- For straight cuts: use a fine-toothed saw (10-12 TPI) with decorative side up, or a jigsaw with decorative side down
- For curved cuts or outlet holes: use a hole saw or drill pilot holes and cut with a jigsaw
- For shower heads or taps: measure precisely and cut holes 2-3mm larger than required
- Support panels fully when cutting to prevent stress cracks
- Sand cut edges gently with fine sandpaper if needed
Safety Tip: Always wear safety goggles and gloves when cutting shower panels. Some materials can create fine dust that should not be inhaled - consider using a dust mask.
Installation Steps
1 Install Trim System
- Measure and cut corner trims to the required height from shower tray to ceiling or desired height.
- Clean the wall corners thoroughly and wipe with alcohol to remove any grease.
- Apply a zigzag bead of panel adhesive to the back of each trim piece.
- Position each trim, ensuring it sits perfectly level (use a spirit level to check).
- Secure with masking tape temporarily while the adhesive sets.
- For internal corners in the shower area, apply a thin bead of silicone sealant inside the trim for extra waterproofing.
Tip: Start with corner trims, as panels will slot into these. Ensure trims are absolutely vertical, even small misalignments will be noticeable in the finished installation.
2 Prepare First Panel
- Measure the wall width between trims at top, middle, and bottom points.
- Transfer these measurements to your first panel, subtracting 4-5mm to allow for expansion.
- Mark positions of any fixtures, pipes, or outlets that require cut-outs.
- Cut the panel to size, then cut any holes or notches for fixtures.
- Dry fit the panel to ensure it fits correctly and make any adjustments.
- Clean the back of the panel with alcohol wipes to improve adhesion.
Remember: Always measure multiple times before cutting. The slight expansion gap is essential, without it, panels may buckle when the room gets warm and humid.
3 Install First Panel
- Apply shower panel adhesive to the back of the panel in a grid pattern (50mm squares).
- Add extra adhesive around the perimeter and any cut-outs for fixtures.
- Carefully position the panel, ensuring the bottom edge sits correctly on the shower tray or bath.
- Press firmly across the entire surface to ensure good adhesion and remove air pockets.
- Check panel is level and properly seated in the corner trim.
- Apply masking tape at various points to hold the panel in place while adhesive sets.
Important: The first panel sets the standard for the entire installation. Take extra time to ensure it's perfectly positioned, especially along the shower tray or bath edge where water will pool.
4 Install Remaining Panels
- Prepare and cut subsequent panels using the same method as the first.
- For tongue-and-groove panels, apply a thin bead of silicone to the groove before connecting panels.
- For panels with trim systems, ensure each panel slots properly into trims.
- Install panels methodically, checking alignment and level after each one.
- For the last panel in a section, you may need to trim the tongue edge for a proper fit.
- If patterns need to align between panels, take extra care with positioning.
Tip: When fitting around shower controls or heads, temporarily fit the outer trims to ensure perfect alignment with the cut-outs in the panel.
5 Install Finishing Trims
- Cut top edge trims or capping trims to the required width for exposed panel edges.
- Apply adhesive to the rear face of the trim and position it on the panel edge.
- For end cap trims (where panels meet walls without corner trims), apply silicone to the trim channel.
- If joining two panels without a trim, ensure edges are perfectly flush and sealed with silicone.
- Install screw cover caps over exposed screw heads in trims if applicable.
- Wipe away any excess adhesive or silicone before it sets.
Tip: Use a silicone finishing tool or a wet finger dipped in soapy water to smooth silicone joints for a professional finish.
Finishing Touches
Sealing For Waterproofing
Meticulous sealing is critical for shower panel installations:
- Apply bathroom-grade silicone sealant along all panel joints and edges
- Create a watertight seal where panels meet the shower tray or bath
- Seal around all fixture cut-outs (shower controls, heads, pipes, etc.)
- Apply silicone between any panel/trim junctions
- Use masking tape on either side of joints for clean, professional sealant lines
- Smooth sealant beads with a silicone tool or wet finger for a neat finish
Pay extra attention to the bottom edge where panels meet the shower tray, this area is most susceptible to water ingress.
Fixture Finishing
- Install shower control cover plates and fixture trims
- Apply a thin bead of silicone around cover plates where they meet the panel
- For shower heads, ensure any escutcheon plates are properly sealed
- Fit accessory mounts (soap dishes, shower baskets, etc.) according to manufacturer instructions
Final Cleaning
- Remove any remaining protective film from panels
- Clean panels with a soft cloth and mild, non-abrasive bathroom cleaner
- Remove any adhesive residue with products recommended by panel manufacturer
- Wipe down trims and fixtures
- Check all sealant lines for completeness and smoothness
Important: Allow at least 24 hours for adhesive and sealant to cure completely before using the shower. Check manufacturer guidelines as some products may require longer curing times.
Completed Installation

Properly installed shower panels create a sleek, waterproof shower enclosure that's both practical and aesthetically pleasing. The seamless finish eliminates grout lines that typically harbour mould and mildew, drastically reducing maintenance requirements.
Follow the care instructions provided with your specific panels to maintain their appearance and performance for years to come.
Frequently Asked Questions
What are the advantages of shower panels over traditional tiles?
Shower panels offer several advantages over tiles: they're 100% waterproof with no grout lines to harbour mould or mildew, installation is significantly faster (typically 1-2 days versus 3-5 days for tiling), they're lower maintenance requiring only regular cleaning with no re-grouting or sealing, and they provide a seamless modern appearance. Additionally, panels can be installed over existing tiles in some cases, reducing demolition work and associated costs.
Which panel material is best for shower installations?
The best material depends on your specific requirements. Acrylic panels offer excellent waterproofing and are available in many designs but can be prone to scratches. PVC panels are highly water-resistant and budget-friendly but may have fewer design options. Composite panels combine durability with aesthetic versatility but typically come at a higher price point. For long-term performance in heavy-use showers, 10mm thick acrylic or composite panels generally provide the best balance of durability and water resistance, though 8mm panels are also suitable for most installations.
Can I install shower panels directly onto plasterboard/drywall?
Yes, shower panels can be installed directly onto plasterboard/drywall, provided it's suitable for bathroom use (water-resistant or "green" board). However, for the best long-term performance, we recommend using moisture-resistant (MR) or water-resistant plasterboard specifically designed for wet areas. For extremely wet areas like walk-in showers, consider using a cement backer board or a waterproof board system like Wedi or Hardie backer board for additional protection. Always ensure the wall surface is flat, stable, and properly sealed at joints before panel installation.
How do I cut shower panels around irregular shapes or pipes?
For irregular shapes and pipe work, follow these steps: First, create a template using cardboard or paper by pressing it against the fixture and marking the outline. Transfer this template onto the panel, ensuring you add 2-3mm clearance around the perimeter for expansion. For pipes, measure the centre position and diameter, then mark it on the panel. Use a hole saw of appropriate size (pipe diameter plus 4-6mm) for neat circular cuts. For irregular cuts, drill a starter hole within the waste area, then use a jigsaw with a fine-toothed blade designed for laminate or acrylic. Always cut from the back of the panel when using a jigsaw to minimize chipping on the decorative face.
What maintenance do shower panels require?
Shower panels require minimal maintenance compared to tiles. For routine cleaning, simply wipe down with a soft cloth and mild, non-abrasive bathroom cleaner after showering to prevent limescale build-up. Avoid abrasive cleaners, scouring pads, or bleach-based products that can damage the panel surface. Periodically check silicone seals (approximately every 6-12 months) and replace if showing signs of wear or mould growth. Use a silicone-specific cleaner for stubborn stains on sealant. For persistent limescale in hard water areas, a specific limescale remover suitable for your panel type can be used occasionally, but always check manufacturer guidelines first.
Can shower panels be installed in a steam shower?
Standard shower panels are generally suitable for normal shower environments, but steam showers present additional challenges due to higher temperatures and intensive moisture exposure. For steam shower installations:
- Select panels specifically rated for steam shower use (check manufacturer specifications)
- Use high-temperature resistant silicone sealant for all joints and edges
- Install panels from floor to ceiling with no gaps
- Pay extra attention to sealing around any fixtures, particularly steam outlets
- Consider using aluminium trims rather than PVC trims which may warp under higher temperatures
If in doubt, consult with the panel manufacturer to confirm their product's suitability for steam shower environments, as warranty coverage may be affected by this type of installation.
Create a modern, low-maintenance shower with our waterproof wall panels. Easy to install and built to last.
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