The MSI Rockmount Gray Oak Splitface 6" x 18" Corner "L" Panel is the premier architectural trim solution to complete high-end stacked stone installations. Engineered by M S International (MSI), this pre-formed 90-degree corner unitfeatures fine, hand-split marble that seamlessly bridges the transition between intersecting walls, completely eliminating the need for unsightly exposed miter cuts or complex field fabrication.

PRODUCT DESCRIPTION

Achieve a monolithic, seamless stone finish with the MSI Rockmount Gray Oak Corner Panel. Specifically tailored as a companion accessory for the matching 6" x 24" Gray Oak Field Ledger Panels, this multi-dimensional marble piece captures a sophisticated, modern neutral aesthetic. The canvas showcases an organic palette of soothing mid-tone grays, soft charcoal layers, and misty ash mineral undertones, displaying an elegant color variation that coordinates effortlessly with contemporary architecture.

The Splitface finish delivers a highly textured, rough-hewn 3D profile, causing ambient lighting to cast dramatic architectural shadows across the staggered stone layers. Crafted from genuine, high-density marble with an interlocking structure, this pre-assembled "L" panel group provides a flawless, clean finish on outward 90-degree corners. It offers an exceptionally durable, frost-proof shield that stands up beautifully to extreme weather, interior high-moisture zones, and heavy-use architectural surfaces alike.

KEY FEATURES

• Authentic Split Face Marble: Hand-cut natural stone panels grouped together to offer a true three-dimensional rustic texture that cannot be replicated by artificial veneers.

• Seamless "L" Shape Geometry: Pre-formed 90-degree corner construction ensures corner joints look continuous and natural while drastically cutting contractor installation time.

• Grout-Free Interlocking System: The stone strips are arranged to nest tightly without requiring grout lines, preserving a rugged, old-world dry-stacked aesthetic.

• Frost-Proof & Weather Resistant: Dense marble composition featuring ultra-low water absorption ($<0.5\%$), making it physically immune to freeze-thaw cycles and severe outdoor climates.

• Soothing Gray Oak Palette: Features multiple sized rectangular stones in varying thicknesses, perfect for finishing off a contemporary backsplash, accent wall, or fireplace surround.

SPECIFICATIONS

INSTALLATION REQUIREMENTS

⚠️ CRITICAL: WALL CLADDING ADHESION: Because these 1.25-inch-thick stone panels are incredibly dense and heavy, they are strictly rated for vertical wall applications and cannot support foot traffic. Ensure your backing substrate (such as cement backer board or wire lath over masonry) is securely anchored to wall studs to handle the heavy dead load.

Professional Recommendations:

• Recommended Adhesives: Utilize a premium, polymer-modified Large and Heavy Tile (LHT) Mortar or a high-bond exterior-grade stone veneer thin-set. Standard drywall joint compound or light tile thin-set will shrink and fail, causing panels to delaminate.

• Corner-First Installation Strategy: Always install the 6" x 18" corner ledger pieces first at your starting elevation level. Once the corner row is set, work your flat 6" x 24" field panels outward from the corner to maintain a perfectly straight, interlocking line.

• Silica Dust Safety Mandate: Cutting natural marble creates hazardous airborne silica dust. Installers must use a wet tile saw for all cuts and wear a well-fitted respirator mask to prevent acute lung irritation. Never dry-cut these panels inside the home.

FREQUENTLY ASKED QUESTIONS

Do I need to seal this stacked stone corner? For interior fireplace surrounds or dry accent walls, sealing is completely optional. However, for outdoor kitchen splash zones, retaining walls, or bathroom installations, applying a high-grade penetrating/impregnating sealer is highly recommended to block water absorption and shield the marble from oil, water stains, and soot discoloration.

How do I clean the rough split face texture? Because the stone is highly dimensional, dust can settle on the micro-ledges. For interior walls, use a vacuum brush attachment or a dry duster seasonally. For exterior cladding, simply rinse the wall down with a garden hose or a mild, pH-neutral stone cleaner. Avoid acidic bathroom sprays, as they will etch and permanently dull natural marble.