If you own an older home in Baltimore — a rowhouse in Federal Hill, a bungalow in Catonsville, a colonial in Towson — there's a good chance your walls and ceilings are made of traditional plaster rather than drywall. Understanding the difference matters when it comes time to repair or restore them.
What Is Traditional Plaster?
Traditional plaster walls consist of multiple coats of plaster applied over a lath base — historically wood strips, later metal mesh. The process creates a wall that's typically 7/8" to 1" thick, dense, and extremely durable. Most homes built before the 1950s in Baltimore use this construction method.
What Is Drywall?
Drywall (also called gypsum board or sheetrock) is a panel made of gypsum plaster sandwiched between two layers of paper. It became the dominant wall material in the 1950s and 1960s because it's faster and cheaper to install than traditional plaster.
Key Differences
Thickness and Density
Traditional plaster is significantly thicker and denser than standard 1/2" drywall. This matters for sound insulation, fire resistance, and the general "solid" feel of the walls in older homes.
Sound Insulation
Plaster's density makes it a natural sound barrier. Homeowners who replace plaster with drywall often notice significantly more noise transmission between rooms and from outside.
Durability
Well-maintained plaster can last the life of the building. Many plaster walls in Baltimore rowhouses are over 100 years old and still in excellent condition. Drywall is more susceptible to denting, moisture damage, and wear over time.
Repair Complexity
Plaster repair requires skill and experience. Matching an existing plaster texture is an art — not something you learn in an afternoon. Drywall repair is more standardized and easier to DIY for small patches, though professional results still require practice.
Home Value
In historic Baltimore neighborhoods, original plaster walls are increasingly valued by buyers who know what they're looking at. Replacing plaster with drywall can actually reduce a home's appeal and value in certain markets.
When Does Replacing Plaster with Drywall Make Sense?
Sometimes it does. If a wall is completely destroyed, if there's significant structural damage behind it, or if the project scope makes full replacement more practical than repair, drywall may be the right call. We'll give you an honest assessment — we're not here to sell you a repair if replacement is more practical.
Our Recommendation
If your original plaster is intact and repairable, repair it. It's better material, it's part of what makes your home what it is, and it's almost always worth preserving. We've been making that case — and proving it — since 1987.
Questions about your specific walls? Call (443) 806-8077 for an honest assessment.