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Atlas Drywall Washington installs fire rated drywall in Washington, DC for corridors, tenant separations, and shafts. We follow specified UL assemblies, using fire rated boards, insulation, and sealants to meet code requirements. Our crews understand details around penetrations and joints so your inspections go smoothly.
Atlas Drywall Washington provides professional fire rated drywall installation throughout Washington, DC, Washington DC and the surrounding area. Our licensed, insured crew delivers safe, clean, on-time work with a free estimate before anything begins. Call (202) 840-8476 or request your free quote.
Fire-rated drywall installation for Washington, DC buildings
Atlas Drywall Washington designs and installs fire-rated drywall and partition walls that match the way DC buildings are actually built. From rowhouses in Capitol Hill and Petworth to mixed-use shells in Shaw and Anacostia, we evaluate your structure, your existing framing, and the applicable code requirements before recommending a system.
We do not treat fire-rated construction as a simple sheetrock upgrade. We look at wall continuity, penetrations, ceiling connections, and floor assemblies so that the fire rating is not just on paper but actually performs in a real fire. Whether you are working under DCRA/ DOB inspections or a third-party inspector, we build and document our work so it passes review the first time whenever possible.
How fire-rated drywall installation actually works
A typical fire rated drywall installation starts with confirming the required rating, 1 hour, 2 hour, or higher, for each wall or ceiling. We review your plans, UL designs, or IBC details to make sure the correct assembly is selected. Then we verify that the framing, studs, track, and spacing match that assembly, and if they do not, we correct them first.
We install the correct type and thickness of board, usually Type X or Type C gypsum, on the required sides of the wall. Fastener spacing is measured and consistent because too few screws or improper pattern can cause an inspection failure. All joints are staggered as required, especially at multi-layer assemblies where we may be installing two or even three layers of drywall on each side.
Joints and corners are taped and coated with fire rated joint compound where specified. At rated elevator lobbies, exit corridors, and stair enclosures, we pay special attention to continuity at the deck above, including fire sealing any gaps between the top of the partition and the concrete slab or roof structure.
Finally, we coordinate with other trades for penetrations. Pipes, conduits, sprinkler lines, and cable trays are handled so that their sleeves or openings can be properly fire-stopped after our drywall is installed.
Types of fire rated drywall and partition wall systems we install
Atlas Drywall Washington installs a wide range of systems, not just standard Type X 5/8 inch board. For many DC multifamily and condo projects, we install double-layer 5/8 inch Type X on one or both sides of a metal stud wall to achieve 1 or 2 hour ratings. In older DC brick rowhouses being converted to flats, we often build new interior rated partitions against existing masonry, using resilient channel or furring strips where sound control is also a priority.
We work with:
• Typical 1 hour and 2 hour corridor and unit separation walls in apartments and condos.
• Rated demising walls between office suites in older downtown office buildings.
• Stair and elevator shaft enclosures where gypsum shaftwall systems are specified.
• Fire rated tenant separation walls in retail shells at ground level under residential floors.
We also handle specialty assemblies such as fire-resistance-rated ceilings under existing wood joists, an important upgrade in many pre-war DC homes that are being renovated for accessory dwelling units or rental units in basements.
What drives the cost of fire rated drywall installation in DC
Pricing for fire rated drywall and partition walls in Washington, DC depends on more than just square footage. The biggest drivers are the fire rating (1 hour vs 2 hour or higher), the number of layers per side, and whether the framing already exists or must be built or modified.
Multi-layer systems cost more in both material and labor because every layer must be cut, hung, and screw-fastened with correct staggering. Shaftwalls and stair enclosures are more complex than typical interior partitions, especially in tight DC stair cores where access is limited. Existing conditions in older townhomes and mixed-use buildings also affect cost. Uneven masonry, out-of-plumb framing, and limited loading areas can add time.
We provide line-item estimates that separate framing, board, taping, and specialty fire caulking. For commercial clients, we can unit-price per square foot or per wall type, tied to the wall tags on your construction drawings, which makes budgeting and change orders straightforward during the project.
Code compliance and inspection in Washington, DC
Fire rated drywall only matters if it passes inspection and meets code. Atlas Drywall Washington works to the current DC Building Code, which is based on the International Building Code, and we match our assemblies to tested UL or GA designs. When you already have a stamped set of drawings, we follow the listed wall types. When you do not, we can recommend standard assemblies that meet the typical requirements for your occupancy type.
We document the assemblies we use and can provide UL design numbers to your architect, general contractor, or inspector. During inspections, common issues that cause failures include missing fire blocking, improperly treated penetrations, and non-continuous walls at the deck. Our crews are trained to address these during installation so testing and visual inspections go smoothly.
In multi-family projects, we pay special attention to unit separation walls and corridor walls that must achieve both a fire rating and sometimes a sound transmission target. In smaller residential projects, we clarify when 5/8 inch Type X is required and where standard 1/2 inch drywall is still acceptable so you are not overbuilding or under-protecting key areas.
Managing penetrations, joints, and real-world problem areas
Many fire rated walls in DC fail over time because of later modifications, not the original installation. When additional plumbing, cabling, or mechanical runs are added, holes are cut without proper fire stopping. Atlas Drywall Washington plans for future access where possible by incorporating rated access panels and coordinating with MEP trades.
During installation, we treat every outlet box, pipe penetration, and duct opening as a weak point. We use compatible fire rated sealants, collars, and putty pads where required, and we verify that box spacing and back-to-back conditions match the chosen wall design. At head-of-wall joints, especially in concrete high-rises, we seal the top gap with appropriate fire rated material so that the wall remains continuous during a fire event.
We also address typical DC issues like irregular brick party walls and mixed wood-steel framing in renovations. We may add furring to create a flat, continuous substrate for the fire rated drywall, and we ensure that any existing gaps between structures are properly closed or sealed so fire and smoke cannot bypass the wall assembly.
What DC property owners should know before starting
Before you start a fire rated drywall project, gather any existing drawings, permits, or inspection comments. Atlas Drywall Washington reviews these documents at the beginning so we do not waste time installing assemblies that will be rejected later. If you are in a historic DC neighborhood, we confirm whether any special constraints apply to your renovation, especially for mixed-use or multi-unit conversions.
Know which areas actually require fire rating. Common locations include walls between dwelling units, walls between living spaces and attached garages, walls enclosing stairs and corridors used as exits, and ceilings below separate dwelling units. We help you distinguish between required fire rated partitions and regular interior partitions so you can allocate your budget correctly.
Finally, choose a contractor that understands both high-rise commercial and neighborhood-scale residential work. DC buildings range from new steel and concrete towers at the Wharf to 100-year-old wood framed rowhouses with brick party walls. Atlas Drywall Washington is familiar with all of these conditions and adapts our fire rated drywall installation approach so your project is safe, code-compliant, and buildable within the constraints of your specific property.
