Flooring systems must be selected for performance, durability, maintenance, and aesthetic requirements. Common flooring materials include ceramic tile, wood, resilient (vinyl/linoleum), concrete, and stone. Ceramic tile is durable and suitable for wet areas. Installation requires proper substrate preparation, thinset mortar, and grout. Tile performance depends on substrate stability; movement in the substrate causes cracking. Substrate preparation including slope for drainage is critical in bathrooms and showers. Grout selection includes non-sanded (epoxy) for thin joints and sanded for wider joints. Grout sealing in porous grouts prevents staining. Wood flooring (hardwood or laminate) requires a stable, dry substrate. Moisture barriers prevent moisture transmission from below. Expansion gaps at perimeter accommodate expansion and contraction. Real hardwood flooring is a premium option with refinishing capability. Engineered wood reduces expansion and contraction. Laminate flooring is economical with good durability. Resilient flooring (vinyl or linoleum) is economical and comfortable to walk on. Sheet vinyl provides seamless installation. Vinyl tile allows partial replacement of damaged areas. Concrete flooring (polished or sealed) is durable and low-cost. Sealing concrete prevents dust and staining. Polishing creates a finished appearance. Stone flooring (granite, marble, slate) is premium and durable but requires sealing and maintenance. Installation requires experienced installers to achieve quality results. Substrate conditions affect all flooring; high moisture, movement, or contamination cause failures. Proper substrate preparation is crucial to flooring longevity.