Commercial Construction
Acoustical Ceilings & Partitions
Acoustical and drop ceilings, office walls, partitions and demising walls for commercial spaces, coordinated with every system above the grid.
Overview
Interior walls and ceilings define a commercial space. Demising walls separate one tenant from another and often carry fire and sound ratings. Office walls create rooms, and acoustical ceilings hide mechanical, electrical, plumbing and fire protection systems while controlling sound and keeping them accessible.
The ceiling is where trades meet. Ductwork, sprinkler piping, lighting, data cable, speakers and diffusers all need a place above or in the grid, so we coordinate ceiling heights and the reflected ceiling plan before framing and close-in begin.
Specialist framing, drywall and ceiling trade partners perform the work under our supervision, built to the architect’s drawings, including the fire-rated and sound-rated assemblies they specify.
Who it’s for
- Landlords dividing a larger space into multiple tenant suites
- Tenants building out offices, medical suites or retail
- Businesses reconfiguring an existing layout with new rooms or open areas
- Property managers replacing stained or damaged ceiling tile and grid
- Spaces that need better sound privacy between rooms or tenants
What’s included
Typically included
- Separation of landlord and tenant scope where the work letter assigns demising walls or ceilings to the landlord
- Metal stud framing for interior partitions and office walls
- Demising walls between tenants, including fire-rated and sound-rated assemblies as specified
- Drywall, taping and finishing to the specified level
- Sound insulation in walls where required
- Acoustical drop ceiling grid and tile installation
- Drywall ceilings, soffits and bulkheads
- Coordination of lights, diffusers, sprinkler heads and access panels in the ceiling
- Door frames and openings in partitions
- Firestopping at rated wall penetrations by qualified installers
Common exclusions
- Mechanical, electrical, plumbing and fire sprinkler work above the ceiling, which are separate scopes
- Demountable or glass office wall systems, unless selected
- Painting, unless included in the finish scope
- Asbestos or hazardous material abatement in existing ceilings
- Structural changes to the building
Every proposal lists its own inclusions and exclusions in writing.
Materials, design options & upgrades
How pricing works
Partitions and ceilings are priced by the square foot of wall and ceiling area, adjusted for the assemblies specified, heights and the complexity of the layout. The estimate is built from the drawings and a site visit to confirm existing conditions.
Rated assemblies, full-height walls and coordination-heavy ceilings cost more than standard partitions and grid. Within a full build-out, this work is priced inside the overall project budget.
What changes the cost
- Wall height and whether partitions extend to the deck
- Fire-rated or sound-rated assembly requirements
- Drywall finish level
- Ceiling type, tile selection and grid style
- Number of doors, openings and soffits
- Density of systems in the ceiling to coordinate
- Occupied building conditions and after-hours work
If this work is part of a larger project, it’s priced within that project’s budget — please don’t add separate estimates together. Read the pricing guide.
Typical stages
Drawing and field review
We confirm dimensions, ceiling heights and rated wall locations against existing conditions.
Layout
Wall locations are laid out on the floor and checked against the drawings before framing.
Framing and rough-in
Studs and door frames go up, then mechanical, electrical, plumbing and data rough-ins are installed in the walls.
Inspection and close-in
Required inspections are completed before insulation and drywall close the walls.
Ceiling grid
The grid is installed after work above the ceiling is far enough along to avoid conflicts.
Tile and closeout
Tile is set last, after systems are complete, and final inspections feed into certificate of occupancy coordination for the space.
What affects the schedule
- Rough-in inspections must pass before walls close
- Above-ceiling work must be substantially complete before tile is set
- Ceiling tile and specialty grid lead times
- Rated wall inspections where required by your jurisdiction
- Work hours and noise limits in occupied buildings
Questions & answers
What is a demising wall?
A wall that separates one tenant space from another. Depending on the occupancies and building, it may need a fire rating, and it usually extends to the structure above.
Why do office walls sometimes not stop sound?
Walls that stop at the ceiling let sound travel over the top through the open plenum. Extending walls to the deck, adding insulation or using sound-rated assemblies improves privacy.
Can you replace ceiling tile without closing the business?
Often yes, by working in sections or after hours. Older ceilings may need testing for hazardous materials before work begins.
Start here
Planning acoustical ceilings & partitions?
A short form — three steps, a few minutes. Share plans or photos if you have them. We’ll review it and follow up using the contact details you provide.