A significant challenge for Coade was preserving the secret formula for Coade Stone. She closely guarded the recipe and production process to prevent competitors from replicating her product's unique qualities. This secrecy likely involved limited access to the factory and careful oversight of the production process.

Coade faced competition from other manufacturers of artificial stone, such as Austin & Seeley, although none produced stone with the reputation of Coade Stone. Maintaining a competitive edge required continuous innovation, quality control, and effective marketing.

The demand for architectural ornaments and garden features was subject to fluctuations in the economy and changing tastes. Coade had to adapt to these changes by diversifying her product line and targeting new markets. Periods of war or economic recession likely impacted demand.

Despite her best efforts, Coade faced the persistent threat of imitation. Less scrupulous manufacturers might attempt to produce inferior versions of her stone, potentially damaging her reputation. Legal battles were costly, and the best defense was maintaining consistently superior quality and service.