August 2026 · Phoenix Drywall Repair LLC
Most homeowners think of drywall as one thing. Walk into any Home Depot or Lowe's in Phoenix and you'll find at least six different types. Each one exists for a reason, and using the wrong one in the wrong place is a mistake that shows up later — sometimes immediately, sometimes years down the road.
We specify the right product for every job we do. Here's a plain-English breakdown of what's available, what it's for, and the misconceptions we run into most often.
Standard 1/2" is what goes on most interior walls and ceilings in Phoenix homes.
Standard 1/2-inch drywall is what's on most interior walls and ceilings in Phoenix homes. It's what gets repaired when you have a hole from a doorknob, a water stain, or a crack from settlement. It's widely available at Home Depot, Lowe's, and local suppliers throughout the Phoenix metro.
For ceilings, 5/8-inch standard drywall (not Type X) is sometimes used because it sags less over time on 16" or 24" joist spacing. If your ceiling is prone to sagging or was recently replaced, there's a good chance 5/8" standard went in.
Thicknesses available locally: 1/4", 3/8", 1/2", 5/8".
Type X is fire-rated drywall. It's a specific product category — not just thicker drywall. Type X contains glass fiber reinforcement and other additives that allow a 1-hour or 2-hour fire rating when installed correctly as part of an assembly.
Where Arizona building code requires Type X:
How to identify it: Type X drywall has a distinct label on the back — it will literally say "Type X" along with the manufacturer name (USG, National Gypsum, CertainTeed, etc.). If you're not sure what's in your garage wall, look for this label on any exposed edge or in your attic.
Important: the fire rating is for the assembly, not just the board. The board needs to be installed with the correct fastener spacing, no gaps, and the joints finished per code. A Type X board with a 3-inch gap around a pipe doesn't provide a fire rating. We always install fire-rated assemblies per code.
Available locally at Home Depot and Lowe's Phoenix locations, and through commercial suppliers.
This is the most misunderstood product in the drywall aisle. Green board — named for its green paper facing — is moisture-resistant, not waterproof. The distinction matters enormously.
What green board does: the green paper facing resists mold growth on the face of the board itself in damp conditions. It handles humidity better than standard drywall.
What green board does NOT do: it does not stop water. If green board gets consistently wet — from a leak, from splash-zone exposure near a shower, from condensation on a poorly insulated exterior wall — it will fail, swell, and grow mold inside the wall cavity. The green paper only protects the surface.
Where green board is appropriate: bathrooms where the wall won't be directly exposed to water spray, laundry rooms, utility rooms, areas with higher ambient humidity. It's not appropriate directly behind a shower surround, a tub deck, or anywhere water actually contacts the wall.
Available at Home Depot and Lowe's throughout Phoenix.
Specialty boards — purple, green, and cement board — each have distinct uses.
Purple board (USG's Sheetrock brand name, though other manufacturers make similar products) is a step up from green board. It has moisture and mold resistance throughout the entire board — the core, not just the facing. It also performs better than green board in humid conditions over time.
We use purple board in bathrooms, kitchens, and any area where moisture exposure is significant but a tile backer isn't required. It's a better choice than green board for most applications where moisture resistance matters, and the price difference is small.
Available at Home Depot Phoenix locations. Check local stock — it's not always on the shelf everywhere.
Cement board (brands: Hardiebacker, Durock, Wonderboard) is not drywall — it's cement and fiber. It cannot be damaged by water. It's the correct substrate for tile in wet areas: shower walls, tub surrounds, shower floors, wet room floors.
If your tile is going to get wet, it needs to go over cement board or a comparable waterproof membrane system. Not green board. Not purple board. Cement board.
We install cement board as part of bathroom remodels and shower repairs where new tile work is planned. Available at all Phoenix Home Depot and Lowe's locations.
Quarter-inch drywall is thin and flexible. Its two main uses:
We use 1/4" occasionally for arch repairs and cover-overs. Less commonly needed than the other types but the right tool for specific situations.
QuietRock is the best-known brand. It's significantly heavier than standard drywall and contains a damping polymer layer that reduces sound transmission. It's not magic — a single layer of QuietRock won't soundproof a room — but as part of a complete acoustic assembly it makes a meaningful difference.
QuietRock is available through specialty suppliers in Phoenix and can be special-ordered through Home Depot. It's expensive ($50–$90 per sheet vs. $15–$20 for standard) so it's best used strategically in walls and ceilings where sound control actually matters — bedroom walls, home theater rooms, home offices.
The right product installed correctly — that's what produces results that last.
| Location | Recommended Type |
|---|---|
| Standard interior walls & ceilings | 1/2" Standard |
| Garage wall/ceiling (attached garage) | 5/8" Type X (fire-rated) |
| Bathroom walls (not shower) | Purple board or green board |
| Shower walls / tub surround (tile) | Cement board (Hardiebacker/Durock) |
| Curved walls / arches | 1/4" flexible drywall |
| Soundproofing priority walls | QuietRock or acoustic drywall |
We're a service company — we don't sell drywall. But we specify and install the right product for every application. If you're not sure what you need, call us and we'll point you in the right direction, whether you hire us or not.
Call or text and we'll tell you exactly what you need — no sales pitch.
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External resources: USG Drywall Products · National Gypsum Product Guide · Arizona Registrar of Contractors