How To Install a Stone Veneer Fireplace Surround

While traditional masonry work can be costly and time-consuming, stone veneer offers an affordable and attractive alternative, mimicking the appearance of natural stone at a fraction of the cost and weight. In the video above, This Old House senior technical editor Mark Powers demonstrates how to install a stone veneer fireplace surround, creating a cozy focal point without breaking the bank.

Shown: Filedledge stone in Andante; Eldorado Stone.

What is a Stone Veneer?

Stone veneer is a thin layer of artificial or natural stone used to cover surfaces, giving them the appearance of solid stone construction. For fireplace surrounds, it provides an excellent way to achieve a high-end look without full-stone masonry’s expense and structural requirements.

Types of Stone Veneer

There are two main types of stone veneer:

• Manufactured stone veneer: Made from concrete and aggregates, this option is lightweight and often more affordable.
• Natural stone veneer: Thin slices of real stone offer authentic texture and color variations.

Benefits of Stone Veneer for Fireplaces

Stone veneer provides several advantages to fireplace surrounds:

• Cost-effective: Significantly less expensive than full stone masonry
• Lightweight: Doesn’t require additional structural support
• Variety: Available in numerous styles, colors, and textures
• Easy installation: Can be applied over existing surfaces in many cases
• Low maintenance: Durable and easy to clean

Gathering Materials and Tools to Install a Stone Veneer

To install a stone veneer fireplace surround, you’ll need the following:

• Stone veneer pieces
• Builder’s felt
• Metal lath
• Veneer mortar
• Grout
• Stud finder
• Staple gun
• Hammer
• Finishing trowel
• Notched trowel (3/8-inch)
• Power grinder
• Brick trowel
• Brick hammer
• Grout sponge
• Grout bag
• Whisk broom

Preparing the Surface

1. Inspect the existing fireplace surround for any damage or moisture issues.
2. Clean the surface thoroughly, removing dirt, dust, or loose material.
3. Use a stud finder to locate and mark the studs behind the surround.

Installation Process for a Stone Veneer

Installing a stone veneer fireplace surround involves several steps, each important for achieving a professional-looking result.

Creating a Moisture Barrier

1. Cover the fireplace surround with the builder’s felt, starting from the bottom and working upward.
2. Overlap each piece by at least 2 inches for proper water resistance.
3. Secure the felt with staples and ensure it’s smooth and free of wrinkles.

Applying Metal Lath

1. Cut the metal lath to fit the surround, using tin snips if necessary.
2. Position the lath so the cups face upward to catch the mortar.
3. Nail the lath securely to the studs, ensuring it’s taut against the felt.

Applying the Scratch Coat

1. Mix the veneer mortar according to the manufacturer’s instructions.
2. Apply a 1/2-inch layer of mortar over the metal lath using a finishing trowel.
3. After 20 minutes, use a notched trowel to create horizontal grooves in the mortar.
4. Allow the scratch coat to dry overnight before proceeding.

Planning the Stone Layout

1. Lay the stone pieces on a canvas or large surface to create your design.
2. Stagger shapes and sizes for a natural look, leaving finger-width gaps between stones.
3. Cut corner pieces as needed using a power grinder and brick hammer.

Installing the Stone Veneer

1. Begin with the header above the fireplace opening, then move to the sides and field.
2. Work from top to bottom to prevent mortar drips on installed pieces.
3. Wet the back of each stone before applying mortar to help adhesion.
4. Apply a 1/4 to 1/2-inch layer of mortar to the back of each stone.
5. Create a furrow in the mortar with the tip of the trowel.
6. Press the stone onto the wall and wiggle it to check for good contact with the scratch coat.
7. Continue adding pieces, maintaining consistent joint widths.

Grouting and Finishing

1. Allow the installed stones to set overnight.
2. Mix the grout to a pudding-like consistency.
3. Use a grout bag to fill the joints between stones.
4. After about an hour, shape the joints with a striking tool.
5. Brush the grout with a whisk broom for a natural-looking finish.
6. Allow the grout to cure for a few days before using the fireplace.

Maintenance and Care for a Stone Veneer

Proper maintenance will help your stone veneer fireplace surround remain beautiful for years.

Cleaning

To keep the surface clean, regularly dust it with a soft, dry cloth. For deeper cleaning, use a mild soap solution and a soft-bristled brush to gently scrub the area. Avoid harsh chemicals or abrasive cleaners, as they can damage the stone or grout.

Sealing

Consider applying a stone sealer to protect the veneer from stains and moisture. Choose a sealer appropriate for your type of stone veneer and follow the manufacturer’s instructions for proper application. To maintain protection, reapply the sealer every few years or as recommended by the product guidelines.

Repairs

If a stone becomes loose or damaged, carefully remove the affected stone and clean the area. Apply fresh mortar to the cleaned surface, then replace the stone or install a new one, ensuring it matches the surrounding pattern.

Our Conclusion

Installing a stone veneer fireplace surround is a rewarding do-it-yourself project that can dramatically enhance your home’s interior. With careful planning, proper techniques, and attention to detail, you can achieve a stunning result that rivals professional masonry work.