The early days of SIDEC date back to 1970, when Guy Donckers was approached by a friend asking him to develop a fish-friendly coating for the small ornamental stones in his fish tank. Within weeks this coating was reality and Guy Donckers unknowingly became the inventor of coloured quartz carpet.

However, it was not until 1986 that he himself put his invention into practice. Indeed, in September of that year he established a production company for stucco, aiming to ultimately set up a gravel coating division under the financial wings of the stucco company. But the success of the stone carpet in both private homes and companies significantly expedited that evolution, resulting in gravel coating becoming, in one year, and remaining SIDEC's core business.

Today, the company is one of the leading producers of coloured gravel and sand in Europe, with branches and offices in the Benelux, US, Canada, Australia, New Zealand, Great Britain, Germany, France, Russia, Ukraine, Hungary and Poland. In South Africa production is done under SIDEC licence.