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Drywall for Multi-Family Projects: Speed, Sound Control and Fire Separation

How drywall is planned on San Antonio apartments and multi-family builds: unit-by-unit production, sound-rated walls between units, and fire separation.

By SCCI Drywall. Published 2026-10-22.

Key Takeaways

  • Multi-family drywall is a production job: crews move unit by unit on a repeatable sequence.
  • Walls between units usually need tested sound ratings; the building code commonly sets STC 50 as the target.
  • Fire separation between units and corridors depends on the right board and continuous construction.
  • Consistent finish and texture across hundreds of rooms takes planning, not just speed.

Apartments, townhomes and senior living communities put drywall to work in a different way than a custom home or a single office suite. The quantities are large, the layouts repeat, and the schedule usually depends on turning units over fast. At the same time, the walls between units carry real performance requirements for both sound and fire.

Production: Building the Same Unit Well, Over and Over

The advantage on multi-family work is repetition. Once the crew has hung, finished and textured the first unit of each floor plan, they know exactly how much board each room takes, where the tricky corners are, and how long each step runs. A good drywall contractor turns that into a rhythm:

  • Stocking by unit: board delivered and staged per floor or building so crews aren't hauling material across the site.
  • Waves of work: hangers, tapers and texture crews follow each other through the building in a set order.
  • Daily tracking: unit-by-unit status so the GC knows which units are ready for paint and which are still drying.

Sound Control Between Units

Noise complaints are among the most common issues in apartment living, and most of them come through shared walls and floor-ceiling assemblies. The International Building Code, which San Antonio and most Texas cities adopt in some edition, includes sound transmission requirements for walls and floors separating dwelling units. In most editions, that target is an STC (Sound Transmission Class) rating of 50 for lab-tested assemblies.

Hitting a tested rating depends on building the assembly exactly as designed. Common details include:

  • Multiple layers of gypsum board, or specialty sound-damping panels
  • Sound-attenuation insulation in the wall cavity
  • Resilient channel or other decoupling where the design calls for it
  • Acoustical sealant at the top, bottom and edges of the wall
  • Sealed or backed outlet boxes so they don't create sound leaks

One unsealed gap can undercut an otherwise well-built wall, so careful installation matters as much as the materials. Our article on soundproofing interior walls explains how sound travels through drywall.

Fire Separation

Walls between units and between units and corridors are typically fire-rated. That means Type X or other rated board installed to a tested design, with joints taped and fasteners covered, and penetrations for pipes and wiring sealed with approved firestopping. Learn more in our guide to fire-rated drywall.

Wet Areas and Durability

Bathrooms, laundry closets and kitchens call for moisture and mold-resistant board, and high-traffic corridors may benefit from abuse-resistant panels that stand up to moving furniture and carts.

Consistent Texture Across Every Unit

When a resident moves from one unit to another, or a maintenance tech patches a wall years later, the texture should look the same everywhere. Settling on one texture, such as orange peel or medium Monterrey, and holding the spray settings steady across the project makes future repairs easier.

Multi-Family Drywall in San Antonio

SCCI Drywall has the crew capacity to staff multi-family projects across San Antonio and South Texas, from a single building to phased communities. Call (210) 875-0280 or request a bid.

Frequently Asked Questions

What STC rating is required between apartments?

The International Building Code generally calls for STC 50 for walls and floor-ceiling assemblies separating dwelling units, or STC 45 when field tested. Check the code edition your city has adopted.

Does adding more drywall make a wall quieter?

Mass helps, but sealing gaps, adding insulation and decoupling the layers usually matter just as much. A wall is only as quiet as its weakest point.

Why use the same texture in every unit?

A single, consistent texture makes future patches blend in and keeps the property looking uniform when units turn over.

Contact SCCI Drywall

SCCI Drywall serves San Antonio and all of South Texas with drywall installation, drywall repair, remodeling, metal stud framing, light gauge framing and acoustical grid ceiling systems for residential and commercial projects.

Phone: (210) 875-0280

Email: sccidrywall@gmail.com

Hours: Monday through Friday, 7:00 AM to 6:00 PM

Request a free drywall quote