To quickly tell if your walls are plaster or drywall, try the pushpin test. Press a standard thumbtack into a discreet spot. If the pin sinks in easily with just your thumb, it is drywall. If it resists, won't go in, or cracks the surface, it is plaster.
Yes, you can drill into plaster, but it is brittle and prone to cracking, so you must use the proper tools and go slowly.
Plaster walls offer a smoother, denser, and more artisanal appearance with subtle hand-troweled textures and flawless curves. In contrast, drywall looks highly uniform but features visible seams and corner joints that can sometimes telegraph through the paint.
Drywall largely replaced traditional lath and plaster after World War II. Although invented in 1916, it became the industry standard in the late 1940s and 1950s due to a massive post-war housing boom, a shortage of skilled plasterers, and the need for faster, more cost-effective construction.
How to identify different wall types. Identifying the type of wall can sometimes be tricky. The simplest way to tell is to tap your wall with your fist; a stud wall will be hollow sounding, as will a lathe and plaster wall. Dot and dab and, unsurprisingly, solid walls, will sound solid to the ear.
In architecture and construction, there are four primary types of walls:
If your walls sound hollow and airy, you likely have drywall, and if it sounds very dense or full, it's probably a harder material like concrete, brick, or plaster. Tip: most new construction homes are built with drywall while older, more historic homes tend to have the more dense materials.
Some drywallers add Dawn dish soap to mud as an old-school trick to break surface tension. A few drops act as a surfactant, making the compound glide off the knife smoother, reducing drag, and helping to release trapped air bubbles.
If your drywall screw won't go in, you are likely hitting a hidden metal stud, a protective nail plate shielding pipes or wires, or the screw tip is deflecting off an existing screw or wood knot.
Plaster walls fell out of favor primarily because they are labor-intensive, time-consuming to install, and require highly specialized skills. Following World War II, the housing boom demanded faster and cheaper construction methods. This led to the widespread adoption of drywall (gypsum board), which is quicker to install and significantly less expensive.
The Pushpin Test
All you need to do is take a simple thumbtack and try to push it through your walls. If the pushpin penetrates the wall, you have drywall. If it doesn't, you have plaster. Pushpins will not penetrate a plaster wall without a hammer or some other extra force.
Many older homes feature plaster walls that may have deteriorated over time, making them less than ideal for a modern living space. Replacing old plaster with drywall enhances the aesthetic appeal of a home and provides improved insulation and easier maintenance.
For drilling into plaster walls, you should use a carbide-tipped masonry drill bit or a multi-material drill bit. These bits cut cleanly through the brittle plaster without causing it to crack or crumble, and they will hold up well if they happen to hit the wooden or metal lath behind it.
The type of screw depends on your project. For hanging pictures or shelves, use heavy-duty toggles or expansion anchors. For attaching plasterboard to walls, use black, phosphate-coated drywall screws. If you are doing plaster repair, use coarse-thread drywall screws paired with galvanized metal plaster washers.
Using your impact driver, drill the hole where you marked. Go slowly; you won't feel much pressure, especially compared to drilling masonry, so you want to ensure you don't make any mistakes. Don't use the hammer action setting on your drill. You don't want to tear the paper backing of the plasterboard.
Two common mistakes made during drywalling are improper joint compound application (such as applying it too thickly or not feathering the edges), and failing to stagger the seams across different studs, which weakens the wall and increases the risk of cracking.
Yes, but you should never screw directly into empty drywall for anything weighing more than a few ounces. Drywall is soft gypsum; threads cannot grip it, and the screw will easily pull out, leaving a hole.
Drywall Anchor Types for Lighter Items
Plastic ribbed anchors are the most commonly used anchors for lighter items and can hold up to 10 pounds per pair. Threaded drywall anchors are suitable for objects weighing up to 25 pounds and are ideal for use on drywall.
Professional drywallers use a specific combination of tools depending on the scale of the job and the area being sanded. For large, flat surfaces, they rely on long-reach power drywall sanders attached to HEPA vacuums. For corners and detail work, they use specialized hand sanders and flexible sanding sponges.
What happens if you paint over new drywall without primer? You'll see "flashing" which is visible inconsistencies in sheen between the drywall face paper and the mud joints, which absorb paint at different rates. You'll also burn through significantly more finish paint trying to achieve even coverage.
Yes, drywall dust can cause a sinus infection. While the dust itself is generally non-toxic, breathing it in irritates and inflames the delicate lining of your nasal passages. This inflammation traps mucus and blocks your sinus drainage pathways, creating a perfect environment for bacteria or viruses to thrive and develop into an infection.
Market studies show that shipping container homes and mobile/manufactured homes are widely considered the least desirable architectural styles. Consumers typically avoid them due to severe spatial limitations, zoning difficulties, and negative resale value.
There is no single "new" material replacing drywall, but several alternatives have gained popularity depending on the space. The most prominent new contender is PVC wall and ceiling panels.
American homes are predominantly made of wood framing rather than solid brick because timber is significantly cheaper, faster to construct, easier to insulate, and safer in earthquake-prone regions.