How do you attach veneer stone to interior walls?

(919) 420 - 3620


Transforming your interior walls with the rustic charm and timeless elegance of veneer stone is an excellent way to create a stunning focal point within your living space. Veneer stone offers the appearance of natural stone, yet it is lighter and more affordable, making it a popular choice for interior design projects. If you're wondering how to attach veneer stone to interior walls, this guide will provide you with step-by-step instructions and essential tips to ensure a successful installation.

Preparing the Surface

Before attaching veneer stone to interior walls, it is crucial to properly prepare the surface. Begin by assessing the condition of the wall, checking for any structural issues or weaknesses that may require attention. Next, thoroughly clean the surface, removing any dirt, dust, or debris that could hinder the adhesion of the veneer stone. Repair any cracks, holes, or imperfections in the wall using appropriate patching materials. It is essential to ensure that the wall is structurally sound and capable of supporting the weight of the veneer stone. By addressing these aspects, you lay the foundation for a successful and durable veneer stone installation.

Applying a Waterproofing Membrane (Optional)

While optional, applying a waterproofing membrane before attaching veneer stone to interior walls can provide valuable protection against moisture infiltration and enhance the longevity of the installation. Waterproofing is crucial in areas prone to moisture, such as bathrooms or kitchens, as it helps prevent water damage, mold growth, and potential structural issues. When choosing a waterproofing membrane, consider factors such as the type of wall surface and the specific requirements of the veneer stone manufacturer. Follow the instructions provided by the membrane manufacturer for proper application, which typically involve cleaning the surface, applying the membrane using a trowel or roller, and allowing it to cure before proceeding with the veneer stone installation.

Installing Metal Lath

Installing metal lath is an essential step when attaching veneer stone to interior walls. The purpose of metal lath is to provide a stable surface for the veneer stone to adhere to, ensuring proper adhesion and preventing potential cracking or shifting. When selecting the right type of metal lath, consider factors such as the size and weight of the veneer stone, as well as the specific requirements of the project. Common types of metal lath include diamond mesh and self-furring lath. Cut the metal lath to fit the wall using tin snips or a similar tool, ensuring it covers the entire area where the veneer stone will be applied. Attach the metal lath securely to the wall using galvanized nails or screws, ensuring it is firmly in place and free from any loose or wobbly sections. This provides a solid foundation for the subsequent steps in the veneer stone installation process.

Mixing and Applying Mortar

Mixing and applying mortar is a critical step when attaching veneer stone to interior walls. Follow these guidelines for a successful installation:

  1. Select the appropriate mortar: Choose a mortar specifically designed for veneer stone applications. Consider factors such as strength, flexibility, and color compatibility with your chosen stone.
  2. Gather your materials: Get all the necessary tools and materials ready, including a mixing container, a mixing paddle or drill attachment, water, and the mortar itself.
  3. Follow manufacturer instructions: Read and follow the manufacturer's instructions on the mortar packaging carefully. Pay attention to the recommended water-to-mortar ratio and mixing time.
  4. Mix the mortar: Pour the specified amount of water into the mixing container. Gradually add the mortar powder while continuously mixing with a mixing paddle or drill attachment. Mix until you achieve a smooth, lump-free consistency.
  5. Let the mortar rest: Allow the mixed mortar to rest for a few minutes to activate its bonding properties. Avoid over-mixing, as it can reduce the mortar's effectiveness.
  6. Apply the mortar: Using a trowel, scoop a portion of the mortar onto the trowel's flat side. Apply it to the prepared surface, such as the metal lath, in a thin, even layer. Make sure to cover an area that you can work on within the mortar's recommended open time.
  7. Comb the mortar: Use the notched edge of the trowel to create horizontal grooves in the applied mortar. This helps increase the bonding surface area and ensures better adhesion.
  8. Work in small sections: Apply the mortar and attach the veneer stones in small sections at a time. This ensures that the mortar remains workable and allows for adjustments as needed.
  9. Press the stones: Press each veneer stone firmly into the mortar bed, making sure it is properly aligned and seated. Apply slight twisting or tapping motions to achieve good contact between the stone and mortar.
  10. Check for level and alignment: Use a level and string lines as guides to ensure the stones are installed straight and level. Make any necessary adjustments before the mortar sets.
  11. Clean excess mortar: As you work, periodically clean off any excess mortar from the stone surfaces using a brush or damp cloth. Be careful not to disturb or smear the mortar in the joints.

Applying the Veneer Stone

When applying veneer stone to interior walls, follow these systematic steps for a successful installation:

  1. Begin from the bottom and work your way upwards.
  2. Apply mortar to the back of each stone using a trowel, ensuring adequate coverage.
  3. Press the stones firmly into the mortar, ensuring proper alignment and secure embedding.
  4. Maintain an even pattern by carefully selecting and placing stones of various shapes and sizes.
  5. Use spacers between the stones to maintain consistent spacing.
  6. Continue the process row by row until the entire surface is covered.

By following this step-by-step approach, you can achieve a well-structured and visually appealing veneer stone installation on your interior walls.

Filling the Joints

Filling the joints between veneer stones is a crucial step that adds strength, stability, and aesthetic appeal to the overall installation. Properly filled joints prevent water infiltration, improve durability, and enhance the finished look. To prepare mortar for joint filling, follow the manufacturer's instructions, ensuring the right consistency for easy application. Use a grout bag or pointing trowel to fill the joints with mortar, pressing it firmly to ensure complete coverage. Work systematically, smoothing the mortar to create neat and consistent joints. Pay attention to maintaining a uniform joint width and level with the stone surface for a professional and cohesive appearance. Taking care to fill the joints properly contributes to a polished and visually appealing result.

Cleaning the Surface

Cleaning the surface after veneer stone installation is essential for achieving a clean and finished look. Begin by removing any excess mortar from the stone surface before it fully sets. Use a brush or damp cloth to gently scrub away the mortar without disturbing the mortar in the joints. Be cautious not to smear or stain the stones while cleaning. Once the mortar has cured, perform a thorough post-installation cleanup to remove any remaining debris or residue. Regular maintenance is also crucial to preserve the appearance of the veneer stone. This may include periodic cleaning using mild detergents or stone cleaners, avoiding abrasive materials or harsh chemicals that could damage the stone. By practicing proper cleaning techniques and ongoing maintenance, you can ensure that your veneer stone installation maintains its beauty and durability over time.


Attaching veneer stone to interior walls may completely change the look and feel of a room, adding character, texture, and elegance. You may obtain a competent and long-lasting installation by adopting a systematic strategy and paying attention to each step.

A well-executed veneer stone installation not only enhances the aesthetic appeal but also adds durability and value to your interior walls, creating a space that is both visually stunning and functional. So, unleash your creativity, follow the steps, and enjoy the transformation of your interior space with beautiful veneer stone.

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