Our two-component PU faux stone (culture stone) casting material is a high-density polyurethane system that faithfully reproduces the texture of natural stone and wood. With a simple 1:1 mixing ratio, ~95% closed-cell structure and excellent self-adhesion to wood, metal, brick and glass, it casts lightweight, durable, weatherproof decorative elements — from stone siding and cornices to picture frames and carved furniture — with crisp, repeatable mould detail.
≥ 80
Hardness Shore A
250
Moulded density kg/m³
~95%
Closed-cell content
≥ 3.5
Compression 10% MPa
1:1
Mixing ratio by weight
Key Features
Lifelike stone & wood texture Reproduces natural stone and wood grain with crisp, repeatable mould detail.
Lightweight yet durable Far lighter than natural stone, yet resists wear, moisture, corrosion and warping.
Excellent self-adhesion Bonds strongly to wood, metal, brick and glass — no intermediate adhesive needed.
~95% closed-cell, weatherproof Waterproof, sound-insulating and flame-retardant for indoor and outdoor use.
Easy, efficient fabrication Simple 1:1 system for high/low-pressure or manual foaming; can be sawn, drilled and carved.
Eco-friendly, CFC-free Insect- and decay-proof, long service life, low-maintenance and environmentally sound.
Applications
Decorative building materials — faux stone siding, cornices and mouldings, decorative wall panels, picture & mirror frames, carved furniture and artware, European-classical furniture parts, ceiling medallions, shoe moulds and large carving products.
Faux Stone Siding & FaçadesExterior Stone CladdingStacked Stone Wall PanelsLightweight Cast Panels
Technical Specifications
Property
Value
Appearance (polyol)
Dark yellow viscous liquid
Polyol density
0.9 ± 0.05 g/cm³
Viscosity (25 °C)
900 ± 200 mPa·s
Mixing ratio (polyol : MDI)
100 : 100 (1:1 by weight)
Stirring time
10–15 s
Cream time
30–60 s
Gel time
75–150 s
Tack-free time
100–210 s
Moulded density
250 ± 20 kg/m³
Hardness
Shore A ≥ 80
Tensile strength
≥ 3.0 MPa
Elongation at break
≥ 3.0%
Compression strength (10%)
≥ 3.5 MPa
Impact strength
≥ 2.0 KJ/m²
Closed-cell content
~95%
Typical values tested by BlendPolyol, for reference only; not a binding specification.
Prepare the mould Use a silicone or hard mould with the desired stone/wood texture; condition materials to ~20 °C.
2
Mix Combine premixed polyol and MDI at 100:100 (1:1 by weight); stir 10–15 s, by machine or by hand.
3
Pour Cast into the mould — cream 30–60 s, gel 75–150 s, tack-free 100–210 s.
4
Demould & finish Demould the cured part; it can be sawn, drilled, carved, painted or surface-finished.
Packaging, Storage & Handling
Packaging Polyol in 200 kg net iron drums; MDI in 250 kg drums. Palletised for export; bulk on request.
Storage Store sealed in a cool, dry, ventilated area away from moisture. Shelf-life details available on request.
Handling & Safety Avoid eye/skin contact; wear safety glasses. Wash skin with soap and water; flush eyes with water and seek medical attention. Full MSDS on request.
The Complete PU System
PU faux stone is a two-component system. For a complete, line-ready solution we also supply the matching raw materials:
10+ years in PU raw materials Specialised blended-polyol manufacturer serving decorative & foam producers worldwide.
Custom formulation Density, hardness and reactivity tuned to your moulds and parts.
Batch-consistent quality Every batch tested in-house; TDS, MSDS and COA provided with shipment.
Global export & fast reply Export to EU, Latin America, Asia and beyond — we respond within 24 hours.
From Sample to Bulk Order
1. Request a sample Tell us your part type and target hardness/density — we send a free sample with TDS & MSDS.
2. Validate on your mould Trial the system; we provide technical support and fine-tune reactivity as needed.
3. Scale to bulk Confirm the formula and order in bulk with flexible MOQ and tiered lead times.
Frequently Asked Questions
What is PU faux stone material?A two-component polyurethane casting system that reproduces natural stone and wood texture as lightweight, durable decorative parts — siding, cornices, frames, carved furniture and more.
What is the mixing ratio?Premixed polyol to MDI at 100:100 — a simple 1:1 ratio by weight, suitable for high/low-pressure machines or manual casting.
Does it bond without extra adhesive?Yes — it has excellent self-adhesion to wood, metal, brick and glass, with no intermediate bonding material required.
Can it be used outdoors?Yes. With ~95% closed-cell structure it is waterproof, corrosion-resistant and flame-retardant, suitable for interior and exterior decoration.
Can the formulation be customized?Yes. Density, hardness and reactivity can be tuned to your moulds. OEM/ODM supported — request a TDS, MSDS and free sample; we reply within 24 hours.
Need PU faux stone material for your moulds?
Get a tailored quote, full TDS & MSDS, and a free sample for mould validation.
✓ Custom formulation✓ TDS · MSDS · COA✓ Reply within 24 h
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