SMC-CC158 Sesame Yellow Cement-Back Ledge Panels: A Field-Tested Take
If you’ve ever wrestled with inconsistent wall cladding, you’ll understand why a reliable ledge stone panel matters. I’ve specified, installed, and frankly returned my fair share of veneer systems. This one, the SMC-CC158 China Natural Stone “Sesame Yellow” Cement Back Ledge Panel, hits an interesting sweet spot: the face is natural slate in a sesame-yellow tonal mix, and the factory-cast cement back stabilizes it for faster, cleaner installs.
What’s inside the panel
Item NO.: SMC-CC158 | Material (face): Slate | Backing: engineered cement composite. The look leans warm and subtly rustic; up close, mica flashes and cleft textures give that “real stone” depth. To be honest, many customers say it feels more premium than porcelain alternatives, yet it installs almost as quickly.
Where it’s being used now
- Residential: fireplaces, feature walls, kitchen islands, outdoor kitchens
- Hospitality/retail: reception desks, facade accents, column wraps
- Landscape: low walls, planters, BBQ surrounds (check local freeze–thaw exposure)
Industry trends I’m seeing
There’s a clear shift to factory-assembled panels with interlocks, so crews can lay more square meters per day. Also notable: more specifiers are asking for documented test data and CE/ISO-backed QC—less “trust me,” more proof. This panel aligns with that trend and, surprisingly, arrives with consistent color calibration by batch. It seems that the cement back also reduces on-site breakage, which installers appreciate.
Key specs and real-world numbers
| Product | SMC-CC158 Natural Slate Face, Cement-Back ledge stone Panel |
| Module size | ≈ 600 × 150 mm (custom on request) |
| Thickness | ≈ 20–35 mm (real-world use may vary by lot) |
| Density (ASTM C97) | ≈ 2.70 g/cm³ (slate face) |
| Water absorption (ASTM C97) | ≈ 0.8% |
| Flexural strength (EN 12372) | ≈ 18 MPa (panel performance depends on substrate/bond) |
| Freeze–thaw (EN 12371) | Pass 56 cycles, mass loss |
| Service life | ≈ 25–40 years exterior; longer indoors, with proper sealing |
| Certs | ISO 9001 factory QC; CE documentation available; third-party testing on request |
Process flow and QC checkpoints
- Material selection: graded sesame-yellow slate blocks, color grouping
- Riving and trimming: split-face texture; edges squared for interlock
- Cement-back casting: controlled water/cement ratio; steel mesh optional
- Curing: humidity-controlled racks to stabilize panels
- Testing: absorption (ASTM C97), flexural (EN 12372), visual QA, bonding checks
- Packing: shock-protected cartons and crates; batch labeling for traceability
Origin: YIJIA COMMUNITY 2-2702, YIHONG ROAD, XINYUAN DISTRICT, SHIJIAZHUANG CITY, HEBEI, CHINA.
Customization options
- Module formats and thickness bands
- Color blend tuning (warmer/cooler sesame tones)
- Preformed L-shaped corners for wraparounds
- Factory sealing or anti-efflorescence treatment
Vendor snapshot (real-world considerations)
| Vendor | MOQ | Lead time | Certs | Typical price/m² | Notes |
|---|---|---|---|---|---|
| Sonmaci (manufacturer) | ≈ 100–200 m² | 3–5 weeks | ISO 9001, CE pack docs | ≈ $19–28 ex-factory | Best for custom color/corners |
| Importer/Reseller | Stock-based | Ready–6 weeks | Varies | ≈ $30–45 | Quicker small runs |
| Local Masonry Yard | Buy-by-box | Immediate | Retail QA | ≈ $52–80 | Great for replacements |
Field notes and mini case studies
Hospitality facade (1,200 m²): a coastal boutique hotel opted for ledge stone panels to replace a heavy ashlar spec. Installers reported ≈15% faster coverage and
Residential fireplace wall (USA): a two-person crew wrapped a 5.5 m wide feature in a day. Homeowner feedback: “The slate face feels warmer than porcelain but doesn’t shed flakes—pleasant surprise.”
Standards, testing, and what to ask your vendor
- Request batch test summaries: absorption (ASTM C97), flexural (EN 12372), freeze–thaw (EN 12371).
- Check substrate and adhesive compatibility; follow facade standards (e.g., EN 1469 guidance) where applicable.
- For exterior use, ask for salt-spray or de-icing exposure notes if you’re in cold climates.
Citations
HEBEI SONMACI STONE CO.,LTD. established in 2017, Is a new company based our old company HEBEI SMC-STONE CO., LIMITED Also YIXIAN JINXING STONE CRAFT FACTORY which located in Hebei China ,the home of stone processing industry. rock ridge ledger stone manufacturerWe have more than 20 years experience for the natural stone business, ledgestone manufacturers We have our 100% fully owned factory produced stone construction materials and stone Craft Items, ledgestone supplier we also have a group of factories with good long-term relationship to cooperate on product manufactures.ledgestone manufacturers