Tile adhesive grout products from Matex global. Our Tile adhesive chemical grout products are more long-lasting, solid, and weather-resistant. Tile adhesive comes in a variety of patterns. Natural stone tiles, on the other hand, must be adhered with white glue to avoid discoloration. Grout is the mortar that fills in the gaps between the tiles to seal them and give the tiling process a smooth, elegant finish.