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Home> Industry News> Condensation‑Cure Silicone VS Addition‑Cure Silicone for GRC Molds: Cost‑Performance Comparison for Architectural Decoration Industry

Condensation‑Cure Silicone VS Addition‑Cure Silicone for GRC Molds: Cost‑Performance Comparison for Architectural Decoration Industry

2026,08,18
Both condensation‑cure (tin‑catalyzed) and addition‑cure (platinum‑catalyzed) RTV‑2 silicone can produce molds for GRC, GRG, concrete and plaster decorative productsMade-in-Ch.... Addition‑cure silicone features ultra‑low shrinkage below 0.1%, no volatile by‑products, long mold lifespan, but its raw‑material price is 2‑3 times higher than condensation‑cure silicone, which restricts large‑scale application in low‑margin mass‑produced GRC European‑style components.
 
GRC European Ornament Mold Silicone 1
 
Condensation‑cure silicone has acceptable shrinkage for most villa‑grade European‑style decorative elements. Its outstanding advantage lies in competitive bulk price, flexible viscosity options (pouring grade / brush‑coating thixotropic grade), simple room‑temperature curing without heating equipment, fitting production conditions of most GRC factories worldwide. Its weaknesses include inevitable slight shrinkage and sensitivity to ambient humidity and curing‑agent proportion.
In actual market segmentation: heritage conservation projects, high‑end customized luxury building ornaments select addition‑cure platinum silicone; mass‑produced Roman columns, exterior wall cornices, mass‑market relief decorative panels widely adopt qualified condensation‑cure Mold Silicone. Many large GRC enterprises adopt mixed‑material strategy: use condensation silicone for mass‑volume standard components, and deploy addition silicone for special high‑precision small‑batch orders. Material selection should balance project budget, dimensional tolerance requirement and expected mold service cycles.
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Author:

Ms. zhou

E-mail:

alice@szrl.net

Phone/WhatsApp:

+86 18938861889

Popular Products
Company News
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