Home › Fire-Rated Drywall and Partition Walls
Atlas Drywall Peoria installs fire rated drywall in Peoria, IL for corridors, tenant separations, and shaftwall systems. We follow specified UL assemblies, fastener patterns, and sealant details to maintain required fire ratings. Our crews coordinate inspections and documentation so your project meets code and life safety requirements.
Atlas Drywall Peoria provides professional fire rated drywall installation throughout Peoria, IL, Illinois and the surrounding area. Our licensed, insured crew delivers safe, clean, on-time work with a free estimate before anything begins. Call (309) 955-2945 or request your free quote.
Fire-rated drywall installation for Peoria homes and businesses
If you are adding a new wall, finishing a basement, or separating a garage from living space in Peoria, fire rated drywall is often required by code, not just a nice upgrade. At Atlas Drywall Peoria, we focus on matching the right fire rated assembly to your specific project instead of guessing or overbuilding.
Fire rated drywall is not “fireproof.” It is designed to slow down the spread of flames and heat for a tested period, usually 1 hour or 2 hours. The most common material is Type X gypsum board, typically 5/8" thick, with fiberglass reinforcement in the core. For higher ratings or special situations, we may recommend Type C board or multi layer systems. We regularly install these in townhomes, duplexes, garage ceilings under living areas, commercial tenant build outs, and multifamily corridors throughout Peoria and nearby communities.
Our first step is always to review your plans and the applicable Peoria or Peoria County building codes. We look at use type (residential, mixed use, office, restaurant), occupancy separation requirements, and any special instructions from your architect or the local inspector. Then we walk the site with you to see existing framing, utilities, and access, so we know what is realistic and what will actually pass inspection when we are done.
How fire rated partition wall projects actually work
A proper fire rated drywall installation is more than hanging thicker sheets. We break the work into clear stages so you know what is happening at every step.
1) Layout and framing review: If the framing is new, we confirm stud spacing (often 16" on center for 1 hour walls) and header details at doors and openings. If we are working on existing walls, we open small areas to verify stud size, spacing, and any blocking that might affect the fire rating. We also look for issues like warped studs that could cause gaps or uneven seams.
2) Coordination with trades: Before we close up walls or ceilings, we coordinate with electricians, plumbers, sprinkler contractors, and HVAC installers. Penetrations are a critical weak point in fire rated assemblies. We mark where pipes, conduits, and ducts pass through, and we plan ahead for fire caulking or fire rated collars as needed.
3) Material selection and delivery: For most 1 hour assemblies we install 5/8" Type X panels on each side of the wall, sometimes with staggered seams and specific screw spacing. In some commercial corridors and stairwells in downtown Peoria buildings, the plans may call for multiple layers, such as two layers of 5/8" Type X on one or both sides. We order material by assembly, not just by sheet, so everything that arrives belongs to a specific rated wall, including specialized joint compound, fire caulk, and any required resilient channels or hat channels.
4) Hanging and fastening: We hang the panels horizontally or vertically depending on the tested assembly and room layout. Screw type, length, and spacing are all set by the fire rating requirements. We avoid overdriving screws, since that can damage the face paper and reduce protection. Around doors and windows we make sure joints do not line up with corners, which helps maintain the rating and reduces cracking later.
5) Joint treatment and detailing: After hanging, we tape and finish joints using the products specified for that assembly. This usually means paper tape and a setting type compound for the first coat. All gaps at perimeters and penetrations that are part of the rated design are sealed with compatible fire stop sealant, not just regular caulk.
6) Final review: Before you call for inspection, we do a walkthrough with you and, when requested, with your general contractor. We verify labels on the board, layer counts, and any fire stop systems, so there are fewer surprises at inspection time.
Fire rated options, design choices, and what affects cost
There is no single “standard” fire rated drywall installation. The assembly you need depends on how the space will be used and what is above, below, and next to it.
Common assemblies we install in Peoria include: 1) 1 hour partition walls with 5/8" Type X on both sides of wood or metal studs, used between apartments or between an attached garage and living area. 2) 2 hour shaft walls and stairwell walls in commercial buildings, which may use metal studs, special shaft liner panels, and multiple layers of Type X or Type C board. 3) Fire rated ceilings under floor systems, especially when there is living space above a garage or commercial space under apartments.
Your cost is driven by several specific factors:
• Rating level: A 2 hour wall almost always means more layers or specialized products than a 1 hour wall, which increases labor and material costs.
• Layers and side coverage: Some walls are rated from one side only, others from both. A duplex party wall or corridor wall typically needs coverage on both sides, while certain mechanical chases might require a rated surface on only one side.
• Penetrations and details: Walls full of electrical boxes, plumbing, ductwork, or recessed niches require more cutting, backing, and fire stop sealing, which adds labor. A long, straight wall with minimal penetrations is more economical.
• Access and height: Working in a tight basement in older Peoria homes is very different from installing 14 foot high corridor walls in a new commercial shell. Tall walls require extra equipment like scaffolding or lifts, and they take more time.
• Finish level: Some rated walls will be hidden above drop ceilings or in mechanical rooms and do not need high aesthetic finish. Others, like lobby or office walls, may require Level 4 or Level 5 finishing and special primers for paint.
When Atlas Drywall Peoria prepares your quote, we spell out exactly which assemblies we are pricing, what fire rating is targeted, what products are being used, and what finish level is included. That transparency helps you compare bids and avoid change orders later.
Fire stopping, code compliance, and inspection in Peoria, IL
A wall is only as fire resistant as its weakest opening. Many failed inspections come from missed fire stopping details, not from the drywall sheets themselves. Our crews pay close attention to these details so your project moves through the City of Peoria or Peoria County inspection process without unnecessary delays.
Typical problem spots we address include: 1) Electrical boxes placed back to back in the same stud cavity, which can violate listing requirements. We space boxes correctly or use listed box protection solutions if the design allows. 2) Gaps at the top of walls where they meet joists or concrete decks. These joints often require specific fire rated sealant or mineral wool packing. 3) Unprotected penetrations for pipes, cables, and ducts. These are sealed with UL listed fire stop systems that match the wall type and the penetrating material.
We also pay attention to how the wall ties into the rest of the structure. A rated wall that stops short of a roof deck or that has an unsealed chase running over the top is not going to perform correctly. On tenant finish projects along Knoxville Avenue, University Street, or in warehouse areas, we often coordinate with the general contractor and building inspector early to confirm how these transitions should be handled.
Before inspection, Atlas Drywall Peoria checks that board type and thickness match the plans, that layers are complete, and that fastener patterns are consistent with the tested assembly. We keep documentation for common UL and GA (Gypsum Association) details so we can quickly answer an inspector’s questions. This preparation is especially valuable on tight commercial build out schedules, where a failed inspection could hold up other trades and your opening date.
Planning, scheduling, and why local experience matters
In central Illinois, timing your fire rated drywall work can save you headaches. For example, unconditioned commercial shells in winter can be very cold and damp, which slows drying times for joint compound and can affect finish quality. When possible, Atlas Drywall Peoria recommends scheduling major interior fire rated wall builds once the building can be reasonably heated and protected from the weather. For residential garage separations or basement projects, we can usually work year round, but we plan more drying time in the colder months.
If you are planning a remodel or new build, a good time to call us is when your framing plans are close to final, before electrical and plumbing rough in starts. We can help your designer or general contractor choose assemblies that provide the needed rating without unnecessary complexity. Sometimes a small framing adjustment or a different stud layout can prevent costly rework later.
For property managers and business owners in Peoria, it is important to think about future access as well. If you know you may be adding data cabling, sprinklers, or additional HVAC later, we can help design rated walls and chases that allow for reasonable access while still protecting the fire rating. That might mean building dedicated rated shafts, adding access panels in approved locations, or keeping high traffic utilities within specific zones.
When you contact Atlas Drywall Peoria for fire rated drywall installation, we will ask a few specific questions: What jurisdiction is the project in (City of Peoria, Peoria County, or another nearby municipality)? Are there stamped plans or do we need to coordinate with an architect or engineer? What is the intended use of the space and any adjacent areas? These details guide us to an installation that is safe, code compliant, and practical for how you will actually use the building.
