Kryton Buildmat Co. Pvt. Ltd. Manufactures Cementitious Brush-Applied Waterproofing System. Kryton Buildmat Co. Pvt. Ltd. Is an ISO 9000 certified company that manufactures Crystalline Concrete Waterproofing Systems. The Cementitious Brush-Applied Waterproofing System is warranted for use in place of conventional waterproofing systems. It reacts chemically within the concrete mass to form billions of needle-like crystals which block the pores, voids and micro cracks in concrete. Presaturation and subsequent re-wetting of the surface will cause deeper diffusion of the organic chemicals and formation of crystals at greater depth.