The standard drywall thickness for most interior walls in a residential house is 1/2-inch. It provides a great balance of cost, weight, and durability for standard 16-inch stud spacing.
For most standard interior walls, 1/2-inch drywall is the standard choice. It is lightweight, easier to cut and install, and highly affordable. However, 5/8-inch drywall is superior and recommended if you want better soundproofing, enhanced durability against dents, or need a strict fire-rated barrier.
Drywalling a 1500 sq ft house typically costs between $6,700 and $12,000 fully installed. This translates to about $1.50 to $4.50 per square foot of surface area, and covers hanging, taping, mudding, and sanding. Several key factors will influence the total:
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.
The standard drywall thickness for most interior walls and ceilings is 1/2-inch. It provides the best balance of weight, cost, and durability for standard wood and metal framing spaced 16 inches on-center.
Achieving a 2-hour fire rating typically requires two layers of 58five-eighths𝟓𝟖" Type X drywall on each side of the wall framing (for a total of four layers), or four layers of 58five-eighths𝟓𝟖" Type X drywall on one side if building an asymmetric wall.
Generally, drywall is cheaper for materials and simple installations, but drop ceilings can save money if you have a lot of low-hanging pipes and ductwork.
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.
Hanging drywall horizontally (often called "hanging the board") is the industry standard for walls, while hanging vertically is generally discouraged. Horizontal installation provides superior structural integrity and wall strength, creates significantly flatter and less visible seams, and is much easier for the taper to mud and finish.
If you are looking for an alternative to traditional drywall, PVC wall panels (like Trusscore or Duramax) are a leading modern replacement. They install up to four times faster than gypsum boards because they eliminate the need to mud, tape, sand, or paint.
Generally, repairing is cheaper for small-to-moderate damage (like doorknob holes or minor cracks). Replacing is more cost-effective if more than 70% of a sheet is damaged, if there is severe structural/water damage, or if you need to tear down walls anyway for plumbing or electrical upgrades.
Common Signs of a Bad Drywall Job
Drywall typically lasts 30 to 70 years, and can even last a lifetime if kept perfectly dry and structurally undisturbed. However, because it is made of a gypsum core covered by heavy paper, its lifespan is entirely dependent on its environment and maintenance.
The top ceiling trend is treating it as the "fifth wall". Gone are the days of plain white. Modern design embraces dramatic colors, bold textures, and architectural details to add depth, luxury, and intentional mood to a space.
Because of its excellent soundproofing qualities, 5/8-inch drywall works well in bedrooms and living areas. However, it's typically more expensive than drywall that's 1/2-inch thick or thinner. If you need to determine what size drywall you need for ceiling installations, 5/8-inch-panels are often the best choice.
Thicker drywall makes almost no difference for temperature insulation. Standard 1/2-inch drywall has a thermal resistance of roughly 𝑅−0.45, while thicker 5/8-inch drywall only bumps this up slightly to about 𝑅−0.55. By comparison, a standard fiberglass wall batt is typically 𝑅−13 or higher.
Vertical joints in drywall are also called "butt joints." Always leave a 1/2-inch gap at the floor. This allows for floor and wall expansion without cracking the drywall. It also helps prevents moisture wicking if the floor floods.
Common drywall mudding mistakes usually stem from rushing, using the wrong materials, or poor technique. These errors typically lead to cracking, visible seams, or stubborn bubbles.
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.
The best joint compound alternative depends on your repair size: spackle for nail holes and small dents, quick-setting "hot mud" for large drywall damage, and wood filler for small cracks in trim or woodwork.
If you want a cheap alternative to drywall, plywood or OSB are the most cost-effective and easiest to install. For a more modern aesthetic without the heavy lifting, PVC interlocking panels or peel-and-stick wall planks eliminate the grueling process of taping, mudding, and sanding.
Type of drop ceiling: Some types of drop ceilings, such as those made from high-quality materials, can add value to a home. Personal preferences: Ultimately, the decision about whether a drop ceiling adds or detracts from the value of a home comes down to personal preferences.
The absolute cheapest way to redo a ceiling is by painting it or applying glue-on foam tiles directly over the existing surface. These DIY-friendly methods require no heavy tear-out and cost between $0.50 and $3.00 per square foot, instantly covering up cracks, popcorn textures, or stains.