Splitface flat green Marble wall entry hall

What Happens When You Install? (The Challenges)

1. Compounded Imperfections: A single vanity top has one gap to manage. A wall of tiles has gaps at every tile. A wall that is out of plumb (not vertical) or has a bow in it will cause the tile lines to "wave" over the course of the wall, creating a visibly crooked installation.

2. Liage (The Pattern Match): Splitface tile is random by nature, but the pieces are often bundled in sheets (mesh-mounted) to create a specific pattern. If the wall is uneven, the sheets won't lay flat against it. This can cause edges to stick out (lippage) and disrupt the natural stone pattern, making seams between sheets obvious.

3. Variable Thickness: Splitface tile has a naturally rough, uneven surface with a highly variable thickness. You cannot use a standard notched trowel alone, as it will only make contact with the high points, leading to inadequate adhesion and hollow spots.

4. Weight: Marble is heavy. This requires a properly prepared substrate that can hold the weight without flexing, which can crack the stone and grout.

What You Need To Do When Installing: A Step-by-Step Guide

BEFORE ANY TILE ARRIVES (The Crucial Prep Work)

1. Substrate Preparation: The wall must be absolutely sound.

• Ideal Substrate: Cement board (e.g., Durock, HardieBacker) properly installed over studs is best. If over drywall, it must be structurally sound, clean, and free of any paint that could peel.

• Key Requirement: FLATNESS. This is more important than plumb. The wall must be a flat plane. You are creating a new, perfect surface on an imperfect one.

2. The Most Important Step: Flattening the Wall

①This is non-negotiable. You must use a mortar bed or a floor and wall patching compound to skim-coat the entire wall area.

②How to do it:

• Use a long (6-8 foot) straightedge or level to identify high and low spots across the entire wall.

• "Burn" a thin layer of mortar onto the wall with the flat side of the trowel to ensure good adhesion.

• Then, use a notched trowel to apply mortar and immediately screed it off using the long straightedge, moving in a sawing motion to create a perfectly flat plane.

• Let this fully cure before proceeding.

3. Layout and Dry-Fit:

①Do NOT start in a corner. Walls are never straight.

②Find the center point of the wall and dry-fit sheets of tile from the center outwards towards the ends. This will allow you to distribute any necessary cuts evenly on both sides, where they are less noticeable.

③Use a laser level to establish perfectly plumb vertical lines to guide your installation.

DURING INSTALLATION (The Technique)

1. Use the Correct Mortar: You must use a high-quality, non-sag, light-weight mortar designed for natural stone and large format tile. This mortar has polymers that grip the tile and prevent it from sliding down the wall.

2. The Correct Application - Double Buttering:

①Because splitface tile is uneven, you must use a technique called "back-buttering" or "double buttering."

②Step 1: Using the notched side of your trowel, apply mortar to the pre-flattened wall.

③Step 2: Key: Using the flat side of the trowel, apply a thin, consistent layer of mortar to the back of each tile sheet.

④Step 3: Comb the mortar on the wall with the notched trowel once more immediately before setting the tile.

⑤This ensures 95-100% mortar coverage behind the uneven stone, preventing hollow spots and ensuring a permanent bond.

3. Installation and Leveling:

①Press each sheet firmly into the mortar, using a slight twisting motion to ensure good contact.

②Because of the uneven surface, you cannot use standard lippage tuning systems. Instead, use a rubber mallet and a beater block (a small, flat piece of wood) to gently tap the sheets flush with each other, ensuring a consistent plane across the entire wall.

4. Grouting:

①Use a non-sanded grout or a grout specifically designed for natural stone. Sanded grout can scratch the softer marble.

②Because the splitface surface is so textured, grouting is messy and difficult. Use a grout bag (like a piping bag for cake icing) to force grout into the joints with minimal mess on the face of the stone.

③Cleanup is meticulous. Use a large, damp (not wet) grout sponge and change your water frequently to avoid a haze of grout film on the stone.

5. Sealing:

①This is mandatory. Desert Emerald Marble is porous. The splitface texture has vastly more surface area to absorb stains.

②Seal the stone before grouting to prevent grout stain from penetrating the stone.

③Seal the stone again after grouting and full cleanup to seal the grout lines and provide a complete protective barrier.

④Use a high-quality impregnating sealer designed for natural stone. It will be invisible and won't change the look.

Summary of Crucial Tips:

• Hire a Professional: This is one of the most difficult tile installations. The cost of the material and the complexity of the prep and installation demand an experienced stone or tile setter.

• Flatten the Wall First: Do not try to compensate for an uneven wall with extra mortar behind the tile. This is the number one reason for failure.

• Double Butter: Always apply mortar to both the wall and the tile for 100% coverage.

• Seal, Seal, Seal: Protect your investment from stains with a proper sealing regimen.