Unlike natural stone or wood, it never needs to be sealed. Just wipe with soapy water for daily upkeep. Surface stains can be removed with a gentle cleansing scrub. Avoid scouring pads, which can dull the surface, and harsh chemicals that could break down the bonds between the quartz and resins.
Resin binders make quartz counters nonporous, so stain- and odor-causing bacteria, mold, and mildew can't penetrate the surface.
Some makers offer jumbo slabs for uninterrupted runs of countertop. But even with standard slabs, typically 60 by 120 inches, the seams can be almost imperceptible; added resins allow cleaner cuts without chipping as stone does. The resins also make quartz more flexible than natural stone, allowing fabricators to bend and shape it into sinks or the sides of a curved island. And it's versatile enough to be used on floors and walls—fabricators can even cut the slabs into standard tile sizes.