Product Overview MSI Rockmount Mayra White Limestone 6" x 18" L-Shape Corner Piece brings timeless Mediterranean elegance, continuous seam integration, and seamless wall wrapping to interior and exterior architectural feature walls. Crafted from authentic Egyptian limestone, Mayra White showcases a soft pale ivory and cream background accented with subtle fossilized shell details and gentle natural mineral tone movement. The precision-engineered 6" x 18" L-corner design eliminates the need for unsightly mitering, exposed raw joints, or complex field cutting on structural turns. Featuring a hand-split 3D stacked stone face, this pre-assembled corner unit provides a monolithic, hand-stacked stone masonry finish for fireplace surrounds, outdoor kitchen pillars, pool feature walls, and building elevation transitions. Technical Specifications Technical Property Value / Specification Notes / Compliance Material Type 100% Genuine Natural Limestone Authentic Egyptian Limestone Nominal Dimensions 6" Height x 18" Overall Length (L-Shape Return) Standard Modular L-Corner Profile Profile & Format Interlocking 3D Stacked L-Panel / Pre-Assembled Seamless 90-Degree Outer Corner Surface & Edge Finish Natural Split-Face / Precision Cut Dimensional Texture & Deep Shadows Color Profile Mayra White (Cream, Pale Ivory & Soft Beige Undertones) Low-to-Moderate Shade Variation (V2) Heat Retention Low Surface Heat Retention Stays Cool Under Direct Sunlight Recommended Applications Pillars, Columns, Wall Corners, Fireplace Wraps, Retaining Ends Interior & Exterior Vertical Veneer Locations Recommended Applications Exterior Pillars, Columns & Posts: Wraps 90-degree corner turns cleanly, giving structural support columns and entryway posts a continuous full-bed stone appearance. Fireplace Surrounds & Outdoor Kitchen Islands: Delivers seamless corner transitions on vertical veneer walls, outdoor BBQ islands, and indoor/outdoor fireplace builds. Retaining Wall Ends & Raised Pool Feature Walls: Frames raised water features, pool planters, and retaining wall corners with clean, pre-engineered 90-degree joint alignment. Installation & Handling Guidelines ⚠️ IMPORTANT: NATURAL LIMESTONE VENEER CORNER PROTOCOL Setting Mortar Selection: Install L-panels using a high-performance, polymer-modified Large & Heavy Tile (LFT) pure white thin-set mortar (ANSI A118.4 / ANSI A118.15). White mortar prevents dark shadowing through light limestone. Substrate Preparation: Mount over structurally sound, clean substrates such as concrete masonry units (CMU), cement backer board, or scratch-coated metal lath systems. Ensure full adhesive suction. Alternating Corner Stagger: Alternate the orientation of the corner legs on consecutive vertical courses to break up continuous vertical seams and establish a natural, hand-laid stone pattern. 100% Mortar Bed Coverage: Fully back-butter the rear of every corner panel to achieve complete mortar coverage, eliminating air pockets where trapped water could freeze and cause spalling. Penetrating Stone Sealer Required: Apply a high-quality penetrating natural stone sealer specifically formulated for outdoor elements after installation to protect against efflorescence, water absorption, and organic staining. Care & Maintenance Routine Cleaning: Rinse periodically with low-pressure fresh water or clean using a neutral pH natural stone cleaner and a soft bristle brush. Avoid Acidic Cleaners: Never use muriatic acid, acidic tile cleaners, or harsh chemicals on natural limestone, as acids will react with and dissolve the calcium carbonate stone structure. Periodic Resealing: Reapply a penetrating stone sealer every 2 to 3 years depending on exposure to salt water, high moisture, or harsh weather environments. Design Profile Aesthetic Inspiration: Modern Mediterranean, French Country Estate, Coastal Contemporary, Resort-Style Architecture. Visual Advantage: Soft ivory tones create deep shadow lines and dimensional texture without absorbing high solar heat, softening intense sunlight across large vertical walls. Complementary Finishes: Integrates seamlessly with MSI Mayra White 6x24 Ledger Panels, Mayra White 12" x 24" Pool Coping, light travertine decking, and natural timber accents. Frequently Asked Questions Why use MSI Rockmount Mayra White L-Corner pieces instead of field-mitering flat 6x24 panels? Pre-assembled L-corners eliminate the need for difficult, time-consuming 45-degree field mitering on site. They create a clean, natural 90-degree return that mimics thick, full-bed structural masonry while saving significantly on installation labor. How do I seamlessly transition these corners into Mayra White 6x24 flat ledger panels? The 6" height aligns perfectly with standard MSI Rockmount 6x24 ledger panels. Install the corner pieces first along the vertical wall edges, then interlock the 6x24 flat panels directly into the stepped Z-edges of the corner units. Can Mayra White L-Corner Panels be used in wet or submerged environments? They are ideal for pool feature walls, outdoor showers, and raised water features. However, they should not be continuously submerged underwater, and proper waterproofing membranes and penetrating sealers must be used during installation.
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