Plaster vs. Drywall in Older Philadelphia Homes
How to tell plaster from drywall, how each is repaired, and when converting makes sense in older Philly homes.
Many Philadelphia rowhomes, trinities and twins were built with plaster over wood or metal lath. Over the years, rooms often got patched or renovated with drywall, so it's common to have both in one house.
How to tell them apart
- Plaster is hard, thick and cold to the touch. A pushpin barely goes in, and you may see wavy surfaces or spiderweb cracks.
- Drywall is thinner and flatter. Pins go in easily, and you'll often see tape seams or screw pops.
Repairing plaster
Cracks and small holes can be repaired in place. Where plaster has come loose from the lath, it can be reattached or the section replaced. Large failing areas are often replaced with drywall and blended into the plaster around them.
When converting to drywall makes sense
- Widespread failed or water-damaged plaster
- Renovations that already open walls for wiring or plumbing
- Basements and other areas that were never finished
Related: drywall & plaster repair · drywall replacement
FAQ
Is plaster better than drywall?
Plaster is harder and more sound-resistant. Drywall is faster and simpler to install and repair. Both work. Repairs should match what's there.
Can you patch plaster with drywall?
Yes, for larger areas, as long as the thickness is built up to match and the seam is blended properly.