Castagra's products are created without emissions or the use of toxic solvents. They utilize either newly mined gypsum or recycled drywall that would be normally bound for landfill sites, and castor oil.The finer the quality of gypsum within the product, the higher quality and more finished can be the end-use application. High-quality, virgin gypsum is used for protective coatings, mouldings and for potable water storage, while lower quality gypsum, or recycled drywall, is for a less engineered material such as roofing shingles, coatings or laminates.