Surface Preparation and Installation Tips for Flexible Stone

Flexible Stone, also known as soft ceramic panels, is a versatile and decorative wall material widely used in both interior and exterior applications. Proper surface preparation and installation are essential for long-lasting adhesion, structural integrity, and aesthetic appeal. This article provides key guidelines and tips to help ensure a successful Flexible Stone installation.

1. Base Surface Preparation

Before installing Flexible Stone, the substrate must meet the following requirements:

1. Flat and Solid Surface:

• Uneven or rough surfaces should be leveled with cement mortar or appropriate leveling compounds.

2. Clean and Dry:

• Remove dust, oil, grease, or any other contaminants that may affect adhesion.

• Avoid installing on surfaces with standing water.

3. Waterproofing:

• For wet areas or exterior walls, waterproofing is essential to prevent water infiltration during and after installation.

4. Special Surfaces:

• Smooth or glossy surfaces such as tiles or steel should be roughened, primed, or reinforced with a fiberglass mesh to increase adhesion.

Pro Tip: For renovation projects, always perform a small-area test installation to ensure compatibility with the existing substrate. Allow 7–10 days for a full curing test before proceeding with large-scale installation.

2. Panel Handling and Fixing

Proper handling and fixing techniques are critical, especially for large or heavy panels:

• Large Panels (≥1200×2400 mm):

• Install a row of fasteners (e.g., nails or screws) along the upper half of the panel to provide support.

• Avoid fastening in the middle or lower sections to prevent slippage or hollow spots before the adhesive fully cures.

• Small or Medium Panels:

• Handle carefully to prevent chipping or bending.

• Use spacers or supports to maintain uniform joint spacing.

3. Joint and Gap Recommendations

Proper spacing between panels ensures structural stability, waterproofing, and visual appeal:

• Interior Applications:

• Leave a 1–2 mm micro-gap; filling is optional. This provides a natural look and reduces installation time.

• Exterior Applications:

• Small panels: 8–10 mm gaps

• Medium panels: 6–8 mm gaps

• Fill joints with appropriate grout to prevent water infiltration and maintain long-term durability

• Color selection: Black or white grout generally provides a clean and visually appealing finish

Tip: Avoid leaving gaps too narrow on exterior walls; water may seep in over time and cause panel lifting or edge curling.

4. Adhesive Application and Full Coverage

• Use the recommended adhesive (two-component epoxy resin or tile adhesive) and ensure full adhesive coverage ≥90%.

• Apply adhesive evenly across the back of the panel using a trowel or foot trowel.

• Avoid leaving any areas uncoated, as this can lead to hollow spots, uneven adhesion, or long-term instability.

5. Cleaning and Surface Protection

• Remove excess adhesive after it dries with a trowel and a semi-dry sponge.

• Do not wet-clean immediately, as water can react with adhesive components and cause white streaks or surface discoloration.

• For interior projects, consider using masking tape to protect panel surfaces during grouting or adhesive overflow.

6. Post-Installation Curing

• Allow 7–10 days for proper curing before exposing panels to rain, water, or physical contact.

• Ensure protection from heavy rain, excessive moisture, or construction debris during the curing period.

Summary of Key Tips

1. Ensure a flat, clean, and waterproofed substrate.

2. Handle large or heavy panels carefully; use fasteners only on the upper portion.

3. Maintain proper joint spacing: micro-gaps indoors, larger gaps outdoors with grout filling.

4. Apply adhesive with full coverage for secure bonding.

5. Clean excess adhesive carefully; avoid wet-cleaning during curing.

6. Protect the installation for 7–10 days after completion.

Proper preparation and installation are essential to achieve a durable, visually appealing, and safe Flexible Stone application. Following these guidelines will help ensure your project stands the test of time.

For Expert Guidance: For technical support or advice on installation best practices, contact WIFi Ceramics: sales@wificeramics.com