3328 M St., NW; 202-339-0840.
This national chain manufactures its own line of unusual tile. It also carries stone, glass, and mosaic tile as well as lighting and plumbing accessories.
Bethesda, 301-718-8343; Rockville, 301-762-4140; Alexandria, 703-299-6200; Falls Church, 703-714-0161.
The top vote-getter for tile, this company has a large selection including stone, ceramic, porcelain, glass, and metal; custom and hand-painted options available.
11601 Boiling Brook Pkwy., Rockville, 301-984-3399; 8196 Terminal Rd., Lorton, 703-550-2352.
This national chain carries ceramic, glass, metal, mosaic, porcelain, and stone tile. Also offers tumbled and antique stone.
Carlisle Wide Plank Floors
By appointment, 1666 33rd St., NW; 800-595-9663.
Architects and designers like this source for hardwood floors, including some antique flooring with worm holes, knots, and other markings.
Charles Luck Stone Center
By appointment, 12202 Clarksville Pike, Clarksville, 443-535-0543; 1700 S. Sterling Blvd., Sterling, 703-674-2240; 43060 Jackpit La., Ashburn, 703-723-1050.
Designers recommend this source for natural and manufactured stone countertops, backsplashes, and flooring.
Classic Floor Designs
2120 L St., NW; 202-872-9860.
Highly recommended for hardwood, vinyl, stone, rubber, and leather flooring.