Drywall vs. Plaster: What Greenville Homeowners Need to Know

How plaster construction works

If you own a home in Greenville SC built before about 1955, there's a good chance your walls are plaster rather than drywall. From the historic homes near downtown to the old farmhouses in Travelers Rest and brick bungalows in the West End, plaster construction is part of the Upstate's building heritage. Understanding the difference between plaster and modern drywall is essential before any renovation.

How modern drywall differs

Plaster is a three- or four-coat wet system installed over wooden lath or, in later years, gypsum board lath. Skilled plasterers troweled a scratch coat, brown coat, and finish coat, creating a wall typically 3/4" to 1" thick. The result is hard, dense, naturally fire-resistant, and impressively quiet between rooms. The downside: plaster is brittle, cracks along stress lines as a house settles, and is difficult to patch invisibly without specialized skill.

Repair vs. replace decisions

Drywall — also called gypsum board, sheetrock, or wallboard — replaced plaster as the residential standard starting in the 1950s. It's a factory-made panel of gypsum sandwiched between paper facings, typically 1/2" or 5/8" thick, screwed to wood or metal studs and finished with paper or mesh tape, joint compound, and sanding. Drywall is faster to install, far less expensive, and dramatically easier to repair. A skilled drywaller can patch a fist-sized hole in an afternoon.

Cost comparison for Greenville homes

For Greenville homeowners deciding whether to keep, repair, or replace plaster walls, the right answer depends on context. If your plaster walls are largely intact with cosmetic cracks, repair is almost always the right move. Plaster patching by an experienced crew preserves the home's character and acoustic feel, and avoids the disposal costs of full removal. Hairline cracks can be V-grooved, filled with setting-type compound, and skim-coated.

Working on hybrid walls

If your plaster has detached from the lath in large sections — a problem we see often in Greenville homes that have suffered roof leaks or long-term humidity issues — full replacement with drywall may make more sense. Modern installation lets electricians and plumbers update wiring and plumbing in the same sweep, and a properly finished drywall job paints out beautifully. The trade-off is loss of the original wall thickness.

One scenario where drywall is non-negotiable: any addition or new construction. Plaster systems are no longer cost-effective for new walls, and modern building codes are written around drywall assemblies. We frequently work on Greenville homes blending old plaster in original rooms with new 5/8" drywall in additions. With careful taping, skim-coating, and texture matching, the transition can be made nearly invisible.

Cost-wise, plaster repair runs about 25–40% more per square foot than equivalent drywall repair because of the slower setting times and skill required. Full plaster replacement with drywall typically runs $3.50–$6.00 per square foot in Greenville, including demolition, hauling, electrical access, and finishing. Call (864) 555-0100 for a free in-home consultation anywhere in the Upstate.