With our team of experienced manufacturer's representatives and trained technical staff, Soprema maintains its strong relationship with both design professionals: architects and consultants, and contractors while providing the owner with peace of mind knowing they have chosen a quality waterproofing solution The Soprema Group was founded in 1908 and has remained independent to this day continuing to grow without sacrificing its personal touch and vital requirement for maintaining flexibility and creativity The founder of the Soprema Group, Mr. Charles Geisen was also the inventor of the Mammoth Membrane which paved the way for modern waterproofing membranes