
Plastic wet wall panels are an affordable, convenient way to give your bathroom a luxurious look. They are completely waterproof, making them ideal for bathrooms and shower rooms. Before installing the panels, you will need to prepare the surface by removing any existing tiles and ensuring the wall is perfectly flat and smooth. Then, you can measure and cut the panels to size, using a fine-toothed saw, utility knife, or jigsaw. After dry-fitting the panels to ensure they fit properly, you can apply adhesive to the back and fix them to the wall, adding sealant to the base of the panels for a waterproof finish.
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$18.34
What You'll Learn
- Planning and preparation: Measure the wall and decide on a vertical or horizontal layout
- Cutting the panels: Use a fine-toothed saw or utility knife to cut the panels to size
- Adhesive application: Apply adhesive to the backside of each panel and press firmly
- Trims and sealant: Install corner trims and apply silicone sealant for water resistance
- Final adjustments: Check for any needed adjustments and let adhesives cure before use

Planning and preparation: Measure the wall and decide on a vertical or horizontal layout
Planning and preparation are key to ensuring a stylish and functional plastic wet wall. The first step is to decide whether you want vertical or horizontal panels, as this will impact your measurements and layout.
Once you've decided on the orientation of your panels, it's time to measure the width and height of your wall. It is recommended to measure three times to ensure absolute accuracy. This is important because you will use these measurements to determine the number of panels needed and their layout. Divide the total width or height of the wall by the width or height of a single panel, respectively. This calculation will give you the number of panels required for that wall.
After determining the number of panels, you need to measure the surface area of the walls. This will help you cut the panels to the appropriate length. If you have ceiling spotlights, measure their diameter and position before transferring these measurements to the relevant panels. Cut holes for the lights using a hole cutter. Additionally, if your wall has any obstacles, like windows or a bath, be sure to measure their dimensions and locations as well.
Before cutting the panels, it is important to prepare the installation area. Ensure the area is clean and free of any dirt, residue, or mould, as these can prevent proper adhesion of the panels and sealant. If your wall is plastered, use a wire brush to remove any loose pieces. It is also recommended to lay the panels flat in the project area for 24 hours before installation to allow them to acclimatise and expand to match the room's humidity levels.
Now you're ready to cut your panels! Measure and cut the coving trim to size, ensuring it touches the ceiling. Then, screw through the lip section of the trim, spacing the screws approximately 300mm apart. Repeat this process for all internal corners, using panel screws to fix the internal corner trim in place.
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Cutting the panels: Use a fine-toothed saw or utility knife to cut the panels to size
Before cutting the panels, it's important to measure the space where you want to install them. Use a tape measure to get an exact measurement of the length of your wall. If your wall is long enough to have just a sliver of a panel at one end, consider cutting your first wall panel in half to create a more balanced look.
Now, let's discuss the cutting process:
Using a Fine-Toothed Saw:
Place the panel on a flat and sturdy surface with the decorative side facing upward. This will prevent scratches on the visible side. Use a fine-toothed hand saw for a clean and precise cut. Cut slowly and steadily to achieve a neat line. Practice on scrap panels or wood to ensure you know how to control the saw before making the final cut. A tenon saw is a great affordable choice for this project, especially if you're new to DIY. It provides excellent control and stability for customising panels to fit around windows, doors, or irregular fittings.
Using a Utility Knife:
For smaller cuts, such as fitting the panel around a window sill, use a utility knife. Mark the area to be cut with a pencil and score the lines with the blade. Work slowly and carefully to achieve a clean cut. If the edges are rough, use very fine sandpaper, but be cautious to only sand the edge or the back of the panel to avoid scratches on the decorative side.
Other Cutting Tools:
While a fine-toothed saw and a utility knife are effective options, there are other tools you can consider for cutting plastic wet wall panels:
- Jigsaw: Great for cutting curves or intricate patterns, especially with a fine-toothed blade. Place the decorative side down as jigsaws cut more on the upward motion.
- Circular Saw: Portable and handheld, offering excellent control over movement. Consider using a track for greater precision and speed.
- Mitre Saw: Provides precision and power, capable of trimming multiple panels simultaneously. Install a fine-toothed blade designed for PVC to avoid rough edges.
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Adhesive application: Apply adhesive to the backside of each panel and press firmly
Before applying adhesive to the panels, there are a few preparatory steps to take. Firstly, ensure that your surface is suitable for installation. If you are installing the panels over tiles, it is recommended to remove the tiles beforehand to prevent poor bonding, moisture issues, and potential tile damage. Then, fill any uneven spots with drywall compound and sand them down to create a smooth surface for the panels to adhere to. Next, lay the panels flat on the floor in the project area for 24 hours to allow them to acclimatise and expand to match the room's humidity levels. This is an important step to ensure that your panels fit properly.
Now, you are ready to apply the adhesive. Remove the protective film from the panels, if they have any. Apply the adhesive evenly across the full back surface of each panel. Make sure to use an adhesive that is specifically designed for bathroom or wet area use, as these adhesives possess resistance to moisture and mould growth.
After applying the adhesive, the panels should be pressed firmly into position. Use a squeezing motion to remove any air pockets between the panel and the wall, ensuring a secure bond. If you are working in a particularly wet environment, it is recommended to add a bead of silicone sealant inside the corner trims of the panels for extra water resistance.
It is important to let the adhesive cure completely before using the renovated space. This will ensure that the panels are securely attached and can withstand everyday use.
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Trims and sealant: Install corner trims and apply silicone sealant for water resistance
Trims and sealants are essential components of installing plastic wet walls, providing a neat finish and ensuring water resistance. Here's a detailed guide on how to install corner trims and apply silicone sealant for optimal results:
Installing Corner Trims:
Before installing corner trims, it's crucial to measure the height of your walls from the floor to the ceiling. Cut your internal corner trim to the appropriate size, using the wall measurements as a guide. Repeat this process for all internal corners to ensure consistency. Secure the internal corner trim in place using panel screws. You will need approximately eight screws for each trim.
Applying Silicone Sealant for Water Resistance:
To achieve water resistance in shower areas, bathrooms, and wet rooms, applying silicone sealant is essential. First, apply a bead of silicone sealant inside the corner trims. This step ensures that water cannot penetrate the joints between panels. When installing adjacent panels, apply another bead of silicone into the panel grooves before slotting them into place.
Additionally, apply silicone sealant around the inside of all end cap trims. This step creates a watertight seal, further enhancing the water resistance of your plastic wet wall. It's important to allow the adhesive and silicone sealant to fully cure for 24 to 48 hours before exposing the panels to water. This waiting period prevents any issues with bonding and ensures a durable finish.
For a seamless finish, use masking tape to hold the panels in place temporarily while the sealant dries. This technique ensures that the panels remain secure and aligned during the curing process.
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Final adjustments: Check for any needed adjustments and let adhesives cure before use
Once you have installed your plastic wet wall panels, there are a few final adjustments and checks you need to make before letting the adhesives cure. Firstly, ensure that each panel is securely in place and properly aligned. Check for any gaps or uneven areas between the panels, as this could affect the overall finish and functionality.
If you are placing the panels in a wet environment, it is crucial to add a sealant to the base of the panels. This step ensures full waterproofing and provides a professional finish. You can use a bead of silicone sealant inside the corner trims and panel grooves to prevent water penetration between the panels. This is especially important if you are installing the panels in a shower area or a room with high humidity.
Before letting the adhesives cure, double-check that the wall panels are firmly attached to the wall. Use the appropriate number of screws, placed at regular intervals, to secure the panels in place. Refer to the manufacturer's instructions for specific guidelines on curing times, as this may vary depending on the type of adhesive used.
Additionally, it is important to prepare the installation area adequately. Ensure that the walls are clean, smooth, and free of any dirt, residue, or mould. This preparation will ensure that the sealant adheres properly and that your plastic wet wall panels remain securely in place for years to come.
Finally, let the adhesives and silicone cure completely before using the wet wall. This curing process may take some time, but it is essential to ensure the durability and longevity of your new plastic wet wall installation.
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Frequently asked questions
You will need to measure the height and width of your wall. Then, decide whether you want vertical or horizontal panels. Divide the height or width by the width or height of a wall panel to determine the number of panels you need.
You can cut the panels using a fine-toothed saw, a tenon saw, a jigsaw, or a utility knife. If using a fine-toothed saw, cut with the panel decorative side up to avoid scratches. Cut slowly to get the cleanest line. If using a utility knife, draw a straight line on the decorative face, then slowly score along the line, keeping the knife away from your hands and face.
Before installing the panels, lay them flat on the floor for 24 hours to acclimatise and expand. Then, install coving trim along the ceiling, screwing it into the wall. Next, fix the internal corner trim in place using panel screws. Apply adhesive to the back of each panel, then push them firmly into position. Finally, add a bead of silicone sealant around the base of the panels for water resistance.











































