Product Overview

MSI Cosmic White 6" x 24" Stacked Stone Ledger Panel is a premium natural marble wall cladding panel designed to add architectural texture and dimensional depth to vertical wall surfaces. Part of MSI’s Rockmount™ Collection, Cosmic White features a crisp, cool white natural marble body with subtle silvery quartz sparkles, soft cream undertones, and a split-face split-stone texture that catches ambient light.

Pre-assembled into staggered 6" x 24" interlocking z-shaped ledger panels, this natural stone system allows individual split-face stone strips to fit tightly together, creating a seamless, dry-stacked stone wall aesthetic without visible panel seams or horizontal grout lines.

Technical Specifications

Recommended Applications

• Indoor Architectural Feature Walls: Living room accent walls, fireplace surrounds, entryway features, and reception counters.

• Exterior Wall Cladding & Hardscapes: Exterior facade accents, patio retaining walls, outdoor kitchen bases, perimeter pillars, and pool house feature walls.

• Kitchen & Commercial Features: Backsplashes behind range hoods (non-wet zone) and commercial hotel lobby accent walls.

Installation & Handling Guidelines

⚠️ CRITICAL WARNING: NATURAL STONE LEDGER PANEL PROTOCOL

• Vertical Wall Applications Only: Stacked stone ledger panels are heavy, dimensionally uneven, and designed exclusively for vertical walls. Do NOT install on floors, flat counter surfaces, or shower floor pans.

• Mortar Selection: Install using a high-performance, polymer-modified Large & Heavy Tile (LFT) thinset specified for heavy wall cladding (ANSI A118.4 or ANSI A118.15 like MAPEI® Ultraflex LFT or LATICRETE® Multimax Lite). For exterior or high-elevation installations, use white thinset mortar to prevent dark mortar shadowing along stone seams.

• Groutless Dry-Stack System: Individual ledger panels are set tightly butt-jointed against one another without grout lines. Do NOT apply grout across the split-face surface.

• Substrate & Weight Capacity: Substrates must be structural, rigid, and plumb (e.g., cement backer board, concrete wall, or masonry block). Ensure wall framing can support approximately 8 to 11 lbs per square foot.

Professional Recommendations

• Interlocking Corners: Use matching Cosmic White 6x18 Corner Panels for seamless, finished outside 90-degree corners along fireplace edges and exterior columns.

• Sealing Strategy: Apply a premium solvent-based penetrating natural stone sealer (such as Miracle Sealants 511 Impregnator or StoneTech® BulletProof®) after installation to protect against dirt accumulation, outdoor weathering, and water absorption.

Care & Maintenance

• Routine Cleaning: Dust lightly with a soft brush or vacuum with a brush attachment. For dirt removal, wash with warm water and a neutral pH natural stone cleaner.

• Avoid Harsh Chemicals: Never use acidic cleaners, vinegar, bleach, or high-pressure power washers at close range, as these can etch natural marble surfaces.

• Resealing Schedule: Reapply a penetrating stone sealer every 2 to 3 years on exterior walls or high-touch interior surfaces to maintain water repellency.

Design Profile

• Aesthetic Inspiration: Modern Coastal Luxury, Alpine Lodge Contemporary, Bright Organic Minimalist.

• Visual Impact: Crisp white split-face marble with subtle quartz sparkle creates an opulent texture under directional wall washes or recessed warm spotlighting.

• Complementary Finishes: Pairs exceptionally well with dark walnut or light oak floating mantels, concrete hearths, black metal fixtures, and natural slate or light porcelain flooring.

Frequently Asked Questions

Can MSI Cosmic White Stacked Stone be installed around a fireplace?

Yes! Cosmic White is made of 100% natural marble and is completely non-combustible, making it an ideal choice for fireplace surrounds and chimney breasts. Always adhere to local building codes regarding clearances around open flames.

Can this stacked stone panel be installed inside a wet shower?

It is not recommended inside wet shower enclosures. Because split-face stacked stone is non-grouted and highly textured, water can become trapped behind panel crevices, leading to soap scum buildup, hard water staining, and potential moisture issues behind the wall.

Do I need to grout MSI Cosmic White Ledger Panels?

No. Stacked stone panels are designed for a groutless, tight-fitting dry-stack installation. The Z-shaped ends allow adjacent panels to interlock cleanly without visible joints.