Exterior Stone Cladding Panels

Product Introduction

   River Rock Stone Panels are large-format prefabricated panels that replicate the shape, texture, and feel of natural pebbles using polyurethane (PU) or composite materials. Each panel is pre-formed with multiple irregularly sized and arranged simulated river rocks, with the mortar effect between the stones also integrally formed. The product is designed to replace the traditional manual river stone wall masonry process, providing a lightweight, quick-installation, and uniform-effect wall decoration solution.

   The product is suitable for scenarios such as building exterior walls, courtyard walls, water feature backdrops, building plinths, and indoor feature walls. It is particularly ideal for projects that aim to achieve the visual effect of natural river rocks but are limited by weight, construction period, or structural bearing capacity.

1.Core Product Specifications

Specification Item	Specification Data
Product Model	RiverRock
Panel Size	2400 × 600 × 50 mm
Weight per Piece	Approx. 11.5 kg (≈8.0 kg/m²)
Coverage Area per Piece	1.44 m²
Core Material	High-density rigid polyurethane (closed-cell rate ＞ 95%)
Surface Layer	Quartz sand aggregate + mineral pigments + waterproof sealing coating
River Rock Shape	Each panel contains 6–8 different pebble shapes, arranged randomly
Edge Design	Left-right tongue-and-groove + top-bottom stepped lap joint
Operating Temperature Range	-30℃ ~ +80℃
Fire Rating	Class B1 (GB 8624-2012) / Euroclass B
Recommended Application Scenarios	Outdoor courtyard walls, water feature backdrops, building plinths, indoor fireplace walls

   Optional Colors: Light gray pebbles, dark gray pebbles, mixed-color pebbles (with a small amount of brown and beige); custom colors are available.

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2.Comparison with Traditional River Stone Masonry

Comparison Dimension	Traditional River Stone Masonry	River Rock Stone Panels
Weight per Unit Area	80–120 kg/m²	Approx. 8 kg/m² (reduced by more than 90%)
Construction Period	2–3 workers, 10–14 days / 100 m²	2 workers, 1 day / 100 m²
Substrate Requirements	Requires a dedicated mortar leveling layer with thickness ≥30 mm	Directly pasted on existing flat walls
Impact on Structural Load	Structural reinforcement is required	No reinforcement needed for conventional walls
Color Consistency	Large color difference in natural stone, difficult to control	Factory color matching, stable and controllable in batches
Post-maintenance Risk	Grout cracking, stone loosening and falling off	Integral structure, no loosening risk
Removability	Irreversible; demolition results in waste	Entire panel can be disassembled, and some can be reused
Freeze-Thaw Resistance	Porous stone absorbs water, prone to cracking in freeze-thaw cycles	Closed-cell core with water absorption ＜ 0.5%, no impact from freeze-thaw cycles

               

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3.Product Structure Analysis

   River Rock stone panels adopt a multi-layer composite structure, with each layer serving a specific function:

Layer Sequence	Name	Material and Function Description
1	Stone Simulating Texture Layer	Reproduced from real river rock combinations using elastic molds; each pebble has a three-dimensional arc, fine cracks, and natural color spots.
2	Mineral Aggregate Coating	A mixture of sprayed quartz sand and mineral pigments, enhancing the stone texture while providing a non-slip surface (wet slip coefficient ≥ 0.6).
3	High-Density Closed-Cell Core	Closed-cell structure formed by polyurethane foaming, with a density of 350–450 kg/m³, non-absorbent, lightweight, and thermal insulating.
4	Back Mesh Reinforcement Layer	Fiberglass mesh cloth, used for installation in high-wind areas or irregular curved surfaces to improve flexural strength.

Edge Details:

•    Left and Right Sides: Tongue-and-groove structure for horizontal positioning and alignment.
•    Top and Bottom Ends: Stepped lap joint to prevent rainwater backflow.
•    After installation, a 3–5 mm shadow gap is naturally formed between panels, simulating the mortar joint effect of real masonry stones.
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4.Application Scenarios

Scenario Type	Description
Courtyard Walls	Transform ordinary cement walls into river rock art walls to enhance the natural atmosphere.
Water Feature Backdrops	Used on the back facades of swimming pools, fish ponds, and waterfall walls—waterproof, non-alkali-reverting, and lightweight.
Building Plinths (Base Walls)	Exterior walls at the bottom of high-rise buildings or commercial complexes, adding a sense of heaviness without the need for structural reinforcement.
Indoor Fireplace Walls	Only 35 mm thick, can be directly pasted on gypsum boards or brick walls without occupying indoor space.
Commercial Spaces	Feature walls in restaurants, homestays, and SPA clubs, creating a streamside or Japanese landscape atmosphere.

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5.Installation Instructions

5.1 Substrate Requirements

• The wall must be flat, dry, free of dust, and free of oil stains.
• Applicable Substrates: Cement mortar walls, concrete walls, old tile walls, old paint walls (adhesion needs to be confirmed).
• Uneven areas must be pre-treated with leveling mortar, with a flatness deviation ≤ 5 mm / 2 m.

5.2 Adhesive Materials

   It is recommended to use polyurethane hybrid structural adhesive (such as similar products from Bostik and Sika). The adhesive coverage area should be ≥ 85%.

5.3 Installation Steps

• Gluing: Apply structural adhesive evenly on the back of the panel, with at least 8–10 glue points per panel and continuous gluing along the edges.
• Positioning: Paste sequentially from bottom to top and left to right. Align the tongue-and-groove.
• Fixing: Tap lightly with a rubber hammer to ensure full contact of the adhesive. The stepped lap joint between the upper and lower panels naturally forms a gap, no additional gap is needed.
• Curing: Avoid rain or external impact within 24 hours.

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6.Product Certifications and Test Results

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7.Frequently Asked Questions

   1.Is the surface of the river rock panel non-slip?

   The surface contains quartz sand aggregate, with a measured wet slip coefficient ≥ 0.6, which is higher than the 0.5 required for outdoor ground, ensuring safe walking on rainy days.

   2.Will it fade with long-term outdoor use?

   Mineral pigments are mixed into the coating rather than printed on the surface. After 1500 hours of QUV testing, the color difference ΔE=1.8, with no obvious fading after more than 10 years of outdoor use.

   3.Can it be cut into special shapes or drilled?

   Yes. It can be cut with a woodworking jigsaw equipped with a tungsten carbide blade. The cut should be sealed with color-matched sealant to prevent moisture from entering the core through the cut.

   4.How to handle panel joints?

   The tongue-and-groove + stepped lap joint design results in a joint depth of only 3–5 mm, forming a natural shadow gap. If sealing is required, outdoor-grade low-modulus polyurethane sealant can be filled.

    5.How to obtain samples?

   300×300 mm actual panel cut samples are provided free of charge (freight collect). The minimum order quantity for bulk goods is 300 square meters.

Haining Longtime Industry Co., Ltd is China Wholesale Exterior Stone Cladding Panels Suppliers and Exterior Stone Cladding Panels Company, established in 2005, our factory started with producing PVC Ceiling and Wall Panels, and has grown to be a professional China PVC ceiling panels manufacturer and a wholesale PVC panels factory, committed to providing our customers with high-quality products and services. After 20 years of development, we now own 5 large factories: Haining Halong PVC Ceiling Factory, Haining Longtime Film Factory, Guangxi PVC Wall Panel Factory, Indonesia PVC Wall Panel Factory, and Vietnam PVC Wall Panel Factory. Our main products include: PVC Ceiling Panels, PVC Wall Panels, WPC Wall Panels, Hot Stamping Foil, PVC Lamination Film, SPC Flooring, WPC Decking, and other related products. Our annual sales can reach up to 35 million USD. We offer Exterior Stone Cladding Panels for sale.