How to Install Thin Veneer Stone

Thin veneer stone is one of the most popular choices for homeowners and contractors across Utah and the Intermountain West, and for good reason. It delivers the authentic beauty of real natural stone at a fraction of the installation effort required by full bed stone. Whether you are upgrading a fireplace surround, an exterior facade, or an accent wall, knowing how to install thin veneer stone correctly will determine how long it lasts and how good it looks.

This guide walks you through the entire installation process from surface preparation all the way to final grouting and sealing. If you are sourcing your material, browse the thin veneer stone collection at Elevated Natural Stone to find the right blend for your project.

What Is Thin Veneer Stone and Why Is It Easy to Install?

Thin veneer stone is genuine natural stone that has been precision-cut to a reduced thickness, typically between one and one and a half inches. Because of this reduced depth and weight, it can be applied directly to most standard wall surfaces without requiring additional structural support.

This makes thin-cut veneer stone a practical choice for:

Interior feature walls and fireplace surrounds. Exterior cladding on residential and commercial buildings. Accent walls in entryways, kitchens, and living rooms. Landscape retaining walls and outdoor fire pits.

Compared to full bed stone, thin veneer installation is faster, requires less mortar, and puts significantly less load on the supporting wall structure.

Tools and Materials You Will Need

Before you begin the thin veneer stone installation process, gather everything you need so the work flows without interruption.

Materials

Natural thin veneer stone panels or pieces. Type S mortar or polymer-modified stone veneer mortar. Metal lath (for non-masonry surfaces). Scratch coat mix. Grout or mortar for joints (if using grouted installation). Stone sealer for finishing.

Tools

Trowel and margin trowel. Angle grinder or wet saw for cutting stone. Level and chalk line. Mixing paddle and bucket. Sponge and grout float. Safety glasses and gloves. Wire brush for surface prep.

Step 1 — Prepare the Surface

Proper surface preparation is the most important step in any thin veneer stone installation. A poorly prepared surface leads to failed adhesion, cracked mortar joints, and stone pieces falling away over time.

Masonry Surfaces (Concrete, Block, Brick)

If you are installing natural stone veneer over an existing masonry surface, clean it thoroughly with a wire brush to remove dust, grease, and any loose material. Dampen the surface before applying mortar to prevent the substrate from drawing moisture out of the mortar too quickly.

Non-Masonry Surfaces (Wood Framing, Drywall, OSB)

For wood-framed or drywall surfaces, you must first install a moisture barrier and then attach metal lath over the entire installation area. Use galvanized screws or staples to secure the lath firmly. Once the lath is in place, apply a scratch coat, which is a thin layer of mortar worked into the metal lath. Score the surface with a notched trowel and allow it to cure for 24 to 48 hours before moving to the next step.

Step 2 — Plan Your Layout Before You Mortar

Never start applying mortar without planning your layout first. This step is especially important when installing natural stone veneer because every piece has a unique shape, size, and color tone.

Dry fit your stone pieces on the ground or a flat surface before installation. This allows you to:

Identify which pieces work well together in terms of size and color. Pre-cut any pieces that need to be trimmed for edges, corners, or outlets. Plan the joint spacing for a consistent, professional finish. Balance larger and smaller pieces across the wall for a natural, organic look.

For corners, use pre-cut corner pieces. At Elevated Natural Stone, we cut corners to match your order so the transition looks seamless and professional.

Step 3 — Mix and Apply the Mortar

Use a Type S mortar or a mortar specifically designed for natural stone veneer installation. Follow the manufacturer's mixing instructions for water ratio, as mortar that is too wet or too dry will both cause adhesion problems.

Applying Mortar to the Wall

Using a trowel, apply a half-inch to three-quarter-inch layer of mortar to the wall surface. Work in small sections of two to three square feet at a time so the mortar does not dry before you set the stone.

Back Buttering the Stone

In addition to applying mortar to the wall, also apply a thin layer of mortar to the back of each stone piece. This technique, called back buttering, ensures full contact between the stone and the wall with no air gaps. Air gaps are a leading cause of water infiltration and eventual stone failure, particularly in Utah climates where freeze-thaw cycles are common.

Step 4 — Set the Stone

Begin installation from the bottom of the wall and work upward. Starting at the bottom ensures each course of stone has a stable base to rest on while the mortar cures.

Press each piece of thin veneer stone firmly into the mortar with a slight twisting motion to ensure full contact. Use a level frequently to check that courses are staying even, particularly on large wall installations.

Leave consistent joint spacing between pieces. Most thin veneer stone installations look best with joints between half an inch and one inch, though dry stack installations with tight or no joints are also popular for a more modern look.

For clean edge transitions and outside corners, always install corner pieces first and then work back across the flat wall surface. This keeps your corners looking sharp and intentional throughout the project.

Step 5 — Cut Stone to Fit

Even with careful planning, you will need to cut pieces to fit around edges, outlets, windows, and other obstacles.

A wet saw with a diamond blade is the preferred tool for clean, precise cuts on natural stone veneer. An angle grinder with a diamond disc works well for smaller adjustments and curved cuts. Always wear safety glasses when cutting stone, as fragments can project at high speed.

When cutting, take your time. Natural stone cannot be uncut. Measure twice, mark clearly, and make slow, controlled passes with the saw.

Step 6 — Grout the Joints

Once all the stone is set and the mortar has cured for at least 24 hours, you can fill the joints. Use a grout bag to apply mortar or grout into the spaces between stones. Work the material in firmly with a jointing tool or the tip of a trowel to pack the joints completely.

Wipe away excess grout from the stone faces with a damp sponge before it fully hardens. Hardened grout on stone faces is difficult to remove without damaging the surface.

Allow the grout to cure fully before moving to the sealing step.

Step 7 — Seal the Stone

Sealing is not always required for natural stone veneer, but it is strongly recommended for exterior installations and any surface exposed to moisture, cooking grease, or heavy foot traffic.

Apply a penetrating stone sealer using a brush or roller. A penetrating sealer soaks into the stone and protects it from within without changing the natural appearance of the surface. For exterior applications in Utah where snow, rain, and freeze-thaw cycles are common, sealing your natural stone veneer significantly extends the life of the installation.

Tips for a Professional Finish

Step back and assess the overall color distribution as you work. Avoid clustering pieces of the same color or size together. Mix pieces from different boxes as you install to blend color variations naturally across the wall. Keep mortar off the stone faces as much as possible during installation. Clean as you go with a damp sponge rather than letting mortar dry on the surface. For exterior installations, ensure proper drainage and flashing at the top of the stone to prevent water infiltration behind the veneer.

Choosing the Right Thin Veneer Stone for Your Project

The success of your installation also depends on choosing the right stone for the application. At Elevated Natural Stone, we produce and supply a wide range of signature thin veneer stone blends from our facility in Vernal, Utah, including Antelope, Aspen Ridge, Kings Peak, Rustic Mountain, Rio Blanco, and many others. Each blend is sourced from Utah geology and cut to precise thickness for consistent installation.

Whether your project is a cozy interior fireplace in Salt Lake City or an exterior facade in the Uinta Basin, we have a stone blend that fits. Browse our full thin veneer collection or download our catalog to see all available options.

Need to find a local supplier? Visit our dealers page to locate an authorized Elevated Natural Stone distributor near you, or call us directly at 435-789-7866.

Conclusion

Installing thin veneer stone is a straightforward process when each step is followed correctly. Surface preparation, proper mortar application, careful layout planning, and consistent joint finishing are the four pillars of a long-lasting, professional-looking installation. Natural thin veneer stone from Utah delivers beauty that manufactured alternatives simply cannot match, and with the right technique, it will look just as good decades from now as it does on installation day.

If you are ready to start your project, contact Elevated Natural Stone or explore our full product range today.

Frequently Asked Questions

1. Can I install thin veneer stone myself or do I need a contractor? 

ANS: Thin veneer stone installation is manageable as a DIY project for someone with basic tiling or masonry experience. However, for large exterior installations or complex layouts, hiring an experienced contractor ensures the best long-term result.

2. What type of mortar should I use for thin veneer stone installation? 

ANS: Use Type S mortar or a polymer-modified mortar specifically rated for natural stone veneer. Avoid standard tile adhesives as they are not strong enough for outdoor or heavy-duty applications.

3. How thick is thin veneer stone? 

ANS: Thin veneer stone is typically cut to between one and one and a half inches in thickness. This makes it significantly lighter than full bed stone while retaining all the strength and beauty of genuine natural stone.

4. Do I need to seal thin veneer stone after installation? 

ANS: Sealing is highly recommended for exterior installations and moisture-exposed surfaces. A penetrating stone sealer protects the material from water infiltration, freeze-thaw damage, and staining without altering the natural appearance of the stone.

5. Where can I buy thin veneer stone in Utah? 

ANS: Elevated Natural Stone is a family-owned natural stone supplier based in Vernal, Utah. We supply precision-cut thin veneer stone to contractors, distributors, and homeowners across the Uinta Basin, Salt Lake City, and surrounding states, including Colorado, Wyoming, Idaho, Arizona, and Nevada. Visit our thin veneer stone page or call 435-789-7866 to place an order.

6. How long does thin veneer stone installation take? 

ANS: A standard interior wall of around 100 square feet typically takes one to two days, including surface prep, installation, and grouting. Larger exterior installations may take several days depending on the complexity of the layout and the number of cuts required.