Product Overview
MSI Rockmount Cosmic Black 6" x 24" Splitface Ledger Panel Wall Tile brings dramatic high-contrast luxury, deep charcoal-to-black colorways, and rich dimensional texture to interior and exterior accent walls. Crafted from 100% genuine natural marble/granite quartzite, each 6" x 24" interlocking Z-panel features hand-split stone strips arranged in a dimensional dry-stacked ledger format.
The Cosmic Black colorway showcases a sophisticated palette of midnight black, deep charcoal, subtle graphite tones, and occasional soft white or gold crystalline veining. Engineered with interlocking Z-cut ends, these panels butt tightly together without grout lines, making it effortless to achieve a seamless, hand-laid masonry look across fireplace surrounds, outdoor kitchen islands, and building facades.
Technical Specifications
| Technical Property |
Value / Specification |
Notes / Compliance |
| Brand / Collection |
MSI Rockmount Ledger Panels |
Genuine Natural Stone Wall Cladding |
| Material Type |
100% Genuine Natural Stone |
Splitface Architectural Stone |
| Nominal Dimensions |
6" W x 24" L (15 cm x 60 cm) |
Interlocking Z-Panel Format |
| Thickness |
Approx. 3/4 in. to 1-1/4 in. (19 mm – 32 mm) |
Dimensional Heavy Relief |
| Surface Finish |
Natural Cleft / Splitface |
Rough-Hewn Textured Finish |
| Color Profile |
Cosmic Black (Midnight Black, Charcoal & Subtle Veining) |
Moderate-to-High Variation (V3) |
| Edge Detail |
Interlocking Z-Panel Cut |
Conceals Vertical Panel Joints |
| Recommended Applications |
Interior Accent Walls, Fireplace Surrounds, Exterior Facades* |
Vertical Wall Locations Only |
*For exterior or high-moisture applications, confirm site-specific substrate load capacity, waterproofing, and natural stone setting requirements prior to installation.
Recommended Applications
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Fireplace Surrounds & Chimney Breasts: Creates a dramatic, moody floor-to-ceiling focal point in living rooms, executive suites, and modern homes.
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Exterior Building Facades & Retaining Walls: Adds substantial dark natural stone character to entryway pillars, patio feature walls, outdoor kitchen islands, and barbecue surrounds.
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Commercial Lobbies & Feature Walls: Delivers a dark, tactile stone backdrop that catches directional wall-wash lighting beautifully.
Installation & Handling Guidelines
⚠️ IMPORTANT: NATURAL STONE LEDGER PANEL INSTALLATION PROTOCOL
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Substrate Structural Load Capacity: Stacked stone ledger panels are heavy natural stone (approx. 8–10 lbs per sq. ft.). Ensure wall substrates (concrete, cement backer board, or masonry) are securely fastened to studs and structurally rated to carry heavy vertical stone loads.
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Large & Heavy Tile (LFT) Mortar Selection: Install using a high-performance, polymer-modified Large & Heavy Tile (LFT) thin-set mortar specifically rated for natural stone (ANSI A118.4 / ANSI A118.15). Dark gray or black LFT mortar is recommended to blend naturally behind dark stone.
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Tight-Joint Installation (No Grout): Interlocking Z-panels are engineered to be "dry-stacked" tight against one another without grout lines. Stagger horizontal panel joints in a running bond pattern to conceal seams.
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Corner Configuration: Use matching MSI Rockmount Cosmic Black 6" x 18" x 6" "L" Corner Panels on 90-degree outside corners to eliminate exposed saw-cut stone edges.
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Pre-Sealing & Maintenance: Apply a penetrating natural stone sealer after installation to protect against dirt accumulation and moisture absorption. Use an color-enhancing sealer if you prefer a deeper, "wet-look" rich black finish.
Care & Maintenance
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Routine Cleaning: Dust or vacuum textured stone crevices using a soft brush attachment. Clean periodically with warm water and a neutral pH natural stone cleaner.
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Avoid Harsh Chemicals: Do not use acidic cleaners, vinegar, bleach, or high-pressure power washers at close range, which can damage natural stone.
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Periodic Resealing: Reapply a penetrating stone sealer every 2 to 4 years on exterior installations to preserve stain defense and freeze-thaw durability.
Design Profile
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Aesthetic Inspiration: Modern Industrial, Urban Executive, High-Contrast Contemporary, Modern Mountain.
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Visual Advantage: Rich midnight-black tones bring a dramatic, grounding element to vertical walls while catching natural directional light across the rough-hewn faces.
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Complementary Finishes: Pairs beautifully with natural white oak, walnut millwork, brushed brass, champagne bronze, or matte black hardware, and concrete or light marble flooring.
Frequently Asked Questions
Does MSI Cosmic Black Stacked Stone require grout?
No. Ledger panel tiles are designed to interlocking-butt tightly together without grout lines, creating a continuous dry-stacked stone appearance.
Can Cosmic Black panels be installed around an outdoor fireplace or grill island?
Yes! Natural stone ledger panels are non-combustible and weather-resistant, making them ideal for outdoor fireplaces, barbecue islands, and patio walls when installed over suitable exterior-grade substrates.
How do I clean dust out of the textured splitface surface indoors?
Vacuuming the panel face with a soft brush attachment is the easiest way to keep dust out of the splitface crevices. For deeper cleaning, wipe down with warm water and a neutral pH natural stone cleaner.
