Tub and shower combinations are quite popular because they satisfy two needs using the same floor space. In traditional construction, walls around the tub are tiled with ceramic tile to form a shower enclosure. These work well, but require maintenance and can develop leaks over time. Manufactured tub and shower combinations may be one-piece acrylic over fiberglass units, or they may come in sections. Either does quite well, although the one-piece units tend to be heavier and more polished. They are also bulkier, require slightly more floor space, and they won't fit through most doorways. Consequently, they are used primarily in new construction. Nothing is more attractive, yet as simple and functional as a one-piece tub and shower enclosure. They have the advantage of never leaking if installed properly, but the color will fade over time. Sectional units are designed for remodeling jobs because they can fit through the smallest doorways, and they can be adjusted to accommodate uneven and out-of-plumb walls. But once installed, they give the appearance of being a one-piece unit and offer the advantages of being attractive, water-tight and easy to clean.