Product Overview
9" x 12" x 6" XL Royal White Corner L Panel is an extra-large, natural stone L-shaped corner piece designed to deliver seamless 90-degree transitions for stacked stone ledger panel installations. Crafted from genuine Royal White quartzite/marble, this corner panel features a multi-tonal bright white palette with subtle silver and sparkling quartz undertones in a splitface texture.
Engineered specifically as a two-piece stepped "L" corner (9" long leg x 3" or 6" short leg x 6" height), it eliminates raw cut edges and visible vertical seams at outside corners. Scaling up traditional ledger corners, the XL 6-inch height accelerates installation across exterior building columns, fireplace corners, outdoor kitchen islands, and feature wall returns.
Technical Specifications
| Technical Property |
Value / Specification |
Notes / Compliance |
| Material Type |
Genuine Natural Stone (Quartzite / Marble) |
100% Splitface Stone |
| Panel Format |
2-Piece Interlocking "L" Corner Set |
Outside 90° Corner Piece |
| Nominal Dimensions |
9" L (Long Leg) x 3"–6" L (Short Leg) x 6" H |
XL Corner Panel Proportion |
| Thickness |
Approx. 3/4 in. to 1-1/4 in. (19 mm – 32 mm) |
Dimensional Textured Relief |
| Surface Finish |
Natural Cleft / Splitface |
Rough-Hewn Crystalline Sparkle |
| Color Profile |
Royal White (Bright White, Soft Silver & Quartz Sparkle) |
Low-to-Moderate Shade Variation (V2) |
| Edge Detail |
Precision Mitered/Stepped 90° L-Corner |
Seamless Outside Corner Joint |
| Recommended Applications |
Exterior Pillars, Fireplace Corners, Outdoor Kitchens, Wall Returns* |
Interior & Exterior Vertical Corners |
*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 Chimneys & Columns: Wraps 90-degree outside corners on fireplace surrounds and chimney breasts without exposed cut edges or grout joints.
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Exterior Building Pillars & Porticos: Creates an authentic, heavy stacked-stone column appearance on home entryways, patio pillars, and retaining wall ends.
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Outdoor Kitchen Islands & Bar Returns: Delivers clean, continuous stone wrapping around outdoor grilling stations and raised patio walls.
Installation & Handling Guidelines
⚠️ IMPORTANT: NATURAL STONE LEDGER CORNER INSTALLATION PROTOCOL
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Install Corners First: Always set your outside corner L-panels first before laying flat ledger panels. Alternate (stagger) long and short legs on every row to prevent vertical alignment seams up the corner.
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Setting Mortar Selection: Install using a high-performance, polymer-modified Large & Heavy Tile (LFT) thin-set mortar or natural stone mortar (ANSI A118.4 / ANSI A118.15) rated for heavy vertical stone applications.
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Tight-Joint Installation (No Grout): Corner panels are engineered to butt tight against one another and adjacent flat panels without grout lines.
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Substrate Structural Rating: Ensure concrete, masonry, or cement backer board substrates are structurally rated to support heavy stone loads (approx. 8–10 lbs per sq. ft.).
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Pre-Sealing: Apply a high-quality penetrating natural stone sealer after installation to protect against dirt accumulation, water absorption, and environmental staining.
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 surfaces.
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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 Coastal, Alpine Luxury, Scandinavian Modern, White Organic Modernism.
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Visual Advantage: Wraps corners smoothly without raw saw-cut stone edges, giving outside corners the substantial look of solid, hand-laid masonry blocks.
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Complementary Finishes: Royal White flat ledger panels, cedar or teak wood accents, black iron fixtures, and poured concrete or light travertine coping.
Frequently Asked Questions
Why are corner L-panels used instead of cutting flat ledger panels at 45 degrees?
Factory-made L-panels feature finished splitface stone on both outer faces, creating a seamless, natural corner. Miter-cutting flat panels on site leaves raw, untextured saw lines exposed at the corner joint.
How do I stagger the corner L-panels during installation?
Flip the corner pieces on alternating rows (row 1: long leg left; row 2: long leg right) so the vertical seams where corner pieces meet flat ledger panels are staggered naturally across the wall.
Is Royal White natural stone frost-proof for cold outdoor climates?
Yes, provided corner panels are installed using polymer-modified freeze-thaw rated mortar, proper wall flashing to prevent water pooling behind the stone, and an exterior penetrating sealer.
