Angkop Corp — For Contractors & Specifiers

The Angkop
Wall System.
2 Steps. Same Day.

Traditional stone installation involves 7 stages, multiple trades, and weeks of lead time. The Angkop Wall System reduces that to 2 steps — no structural reinforcement, no crane, no mason, no cure time. This guide covers the full system: assembly stack, substrates, tools, and what to avoid.

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The Assembly Stack

01

How the System Stacks

Every Angkop installation follows the same layered assembly — whether wall, ceiling, dry, or wet. Each layer has a specific role. Get the stack right and the finish is permanent.

01

Existing ceiling or wall — popcorn, drywall, concrete, masonry. Leave as-is if structurally stable. In many retrofit applications, no scraping or demolition is required.

02

New substrate board — 1/4" drywall, lightweight cement board, Kerdi-Board, or GoBoard. Screwed directly into joists. Seams must be staggered — do not align substrate joints.

03

MegaLite adhesive — applied to the panel back with a notched trowel. Permanent high-strength bond for vertical and overhead applications.

04

Flexible Natural Stone™ — pressed to surface. Layout (stacked, staggered, bookmatched, random) is a design choice.

05
Specialty Adhesives — Wood, Metal, Aluminum & Transition Applications

Where Flexible Natural Stone™ interfaces directly with wood-based composites, painted steel, aluminum, or dissimilar-material transitions, use a compatible specialty adhesive/sealant appropriate to the specific substrate and application.

Sikaflex®-11 FC Purform® may be used for specialty bonding applications including properly prepared painted steel caps, aluminum ledge edging, end terminations, and similar transition details where an elastic construction adhesive is appropriate.

Sikaflex® AT Metal may be specified for compatible aluminum-to-steel and metal-to-metal transition applications, subject to Sika's current technical requirements and substrate preparation procedures.

These specialty adhesives are not a replacement for the primary MegaLite installation system on standard construction substrates. MegaLite remains the recommended primary adhesive for Flexible Natural Stone™ installations on properly prepared rigid construction substrates.

All specialty adhesive applications require:

—Clean, sound, dry and properly prepared substrates.
—Removal of oil, dust, oxidation, loose coatings and other contaminants.
—Mechanical abrasion where required by the adhesive manufacturer's instructions.
—Primer where required by the adhesive manufacturer's substrate-specific requirements.
—Verification of adhesion and material compatibility when the substrate, coating, finish or environmental condition is unusual or not specifically covered by the manufacturer's technical documentation.
—Compliance with the adhesive manufacturer's current Technical Data Sheet and application limitations.

For exterior applications, account for substrate movement, thermal cycling, moisture exposure and freeze-thaw conditions. The adhesive selection shall be appropriate for the actual substrate combination and service environment.

Critical Detail

02

Why Substrate Seams Must Be Staggered

Flexible stone panels are thin. Aligned substrate seams concentrate movement in a single line — increasing cracking risk and visible lines printing through the stone surface.

—Stagger all substrate board seams — offset joints by at least half a board length
—Screw into joists at proper spacing — not just into the existing surface layer
—Eliminate flex movement before bonding — a rigid, stable substrate is the foundation of a clean finish

Substrate Guide

03

Choosing the Right Board

MegaLite bonds to all standard construction substrates when properly prepared.

Walls — All Environments

—Drywall — standard for residential and commercial interiors
—Concrete and masonry — direct bond on properly prepared surfaces
—Cement board — professional system for wet zones
—Existing cladding and tile — over-cladding without demo, where substrate is sound
—Curved surfaces — panels flex to shape around columns and arches

Dry Ceilings — Retrofit & New Build

01Assess existing ceiling — popcorn or existing texture can remain if stable
02Install 1/4" drywall or lightweight board — screwed into joists, seams staggered
03Apply MegaLite and bond Angkop panels

Wet Ceilings — Bathroom, Spa & Hospitality

—Schluter Kerdi-Board — lightweight, waterproof, ceiling-friendly
—Wedi Board — rigid, waterproof, easy to handle overhead
—GoBoard — lightweight tile backer, moisture-resistant

Cutting Methods

04

Tools & Cutting by Method

Method 01 — Diamond Blade ★ Recommended

Continuous rim porcelain or stone-rated diamond blade on a track saw or angle grinder. Support the sheet fully underneath. Slow feed rate, low-vibration passes.

01Track Saw — best for long straight cuts. Diamond blade, slow feed rate, full panel support.
024.5" Angle Grinder — field cuts, curves, detail work. Continuous rim diamond blade.
03Aviation Snips — curves, outlet cutouts, ceiling edge trimming.
04Oscillating Multi-Tool — outlet cuts, ceiling edges, trimming panels in place.

PPE & Dust Safety

Use a dust mask or respirator, eye protection, and adequate ventilation. Dry cutting generates fine mineral and silica-containing dust.

Pro Installer Kit

Track saw or 4.5" angle grinder with continuous rim diamond blade + offset aviation snips + oscillating multi-tool + fresh sharp blades + long metal straight edge.

Bonding

05

Adhesive & Application

MegaLite is the recommended adhesive for all Angkop installations — walls, ceilings, wet zones, and over existing surfaces.

01MegaLite Cement Adhesive — bonds to drywall, concrete, masonry, cement board, Kerdi-Board, Wedi, GoBoard.
02Notched Trowel — for even adhesive coverage across the panel back.

Specialty Adhesives — Metal, Wood Composite & Transition Applications

Sikaflex®-11 FC Construction Sealant/Adhesive

Use for: Angkop Original Colour 3D Wood Fence Panels — Flexible Stone on painted steel cap — Aluminium ledge edging — End terminations and transitions.

Advantages: Bonds to properly prepared painted steel — Bonds to aluminium — Bonds to wood-based composite products — Remains flexible in freeze-thaw conditions — Excellent water resistance — Suitable for exterior environments. Sika Primer required as dictated by substrate condition.

Sikaflex® AT Metal

Use for: Aluminium edging to painted steel cap — Metal-to-metal transitions — Exposed edge terminations.

Surface Preparation — Prior to Installation

Lightly abrade glossy painted steel surfaces. Remove all dirt, oxidation, oil, and contaminants. Clean with an approved solvent cleaner. Allow surfaces to dry completely. Apply adhesive according to manufacturer recommendations.

Movement & Expansion

06

Accommodating Building Movement

—Leave perimeter gaps at ceilings, walls, and corners
—Allow transition gaps at material changes — stone to tile, stone to drywall, stone to trim
—Fireplace installations require additional expansion allowance for thermal cycling
—Large-format ceiling installations — account for substrate deflection and seasonal building movement

What to Avoid

07

Where Callbacks Happen

—Unprepared substrates — dusty, wet, failing paint, or loose surfaces
—Dull utility knives on 3–5mm panels — use diamond blade methods instead
—Segmented masonry blades — chip edges and crack corners
—Cutting without PPE — respirator and eye protection required
—Hard-locking panels between rigid surfaces — no movement gap means cracking
—Aligned substrate seams — always stagger board joints
—Raw MDF in humid or wet zones — swells and fails over time
—Heavy 1/2" cement board on ceilings — use 1/4" or lightweight backer instead
—Gluing boards over popcorn without screwing into joists
—Any ceiling flex — screw into joists at proper spacing before bonding

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