Beadboard paneling destined for use in dry, interior spaces may be made of reasonably-priced medium density fiberboard (MDF). The material is easily cut with any type of manual or power saw and installs quickly using wood screws, finishing nails or construction-grade adhesives. Hardware or home improvement store personnel can advise what will work best in your particular situation and with the material currently covering your wall or ceiling.
Where moisture will be a constant, such as in kitchen, bathroom or external applications, look for beadboard made from cellular polyvinyl chloride (PVC). These panels are engineered to look and perform like wood but are rot-, warp-, moisture- and insect-resistant. PVC panels work well in concert with other siding materials such as vinyl, stucco, fiber cement and brick. Available in natural white or custom-painted to your specifications, these siding panels attach quickly and easily using galvanized nails or screws.
Most beadboard siding or paneling is available in 1/2-inch-thick, 4-foot-by-8-foot sheets, but the product may be bought in lengths of up to 16 feet. Two-inch and three-inch center-to-center sheet paneling usually features a standard bead profile while 1 5/8 inch and 2 1/2 inch center-to-center panels often feature a V-bead profile. Historic wainscot paneling is usually V-bead while standard bead is a newer, custom profile that offers a larger, more visible appearance for large, external applications.
Not all siding suppliers and installers routinely stock beadboard but most will be happy to order it for you in the size, color and profile you prefer. If your budget allows for it, you may wish to use PVC beadboard paneling in areas where wood beadboard would normally suffice. The advantage of PVC beadboard paneling is that it never requires painting and is therefore low maintenance. An additional plus for the product is added flame and ultraviolet resistance that keeps your paneled walls looking like new for years.