Garages are one of the few drywall installation jobs where code drives the material choice rather than looks. An attached garage needs a rated separation from the living space, which means fire-rated board and finished joints even if you never intended to paint the walls. Here is what that costs in Illinois in 2026.
Cost to drywall a garage: 2026 Illinois ranges
- One car garage (about 240 sq ft floor), hung and taped to Level 2: $1,600 - $2,600
- Two car garage (about 400 - 440 sq ft floor), Level 2 fire taped: $2,400 - $3,900
- Two car garage finished to Level 4 and primed: $3,300 - $5,400
- Three car garage, Level 2: $3,400 - $5,600
- Three car garage finished to Level 4 and primed: $4,600 - $7,600
- Ceiling only, two car garage: $1,100 - $2,100
- Add insulation (batt, walls and ceiling): $900 - $2,400
These are hung, taped, and finished numbers including material, fasteners, dust control, and haul-away. Broader installation pricing is on our Illinois drywall installation cost page.
Why garage drywall costs more per square foot than a bedroom
- 5/8 inch Type X board weighs about 70 pounds per 4x8 sheet, so hanging is slower and usually a two-person job
- Ceilings are high and often follow a truss line, which means staging and lifts
- Garage ceilings frequently need a full fire-rated membrane where living space sits above
- Corners around service doors, overhead door tracks, and mechanicals add cut time
- Uneven or twisted framing in older detached garages needs shimming before board goes up
Fire rated garage drywall requirements in Illinois
Illinois builds on the International Residential Code. In practice the garage side of any wall or ceiling separating the garage from living space needs a rated membrane - typically 5/8 inch Type X, taped and finished at the joints, continuous up to the roof deck where habitable space is above the garage. Unfinished joints are the most common inspection failure we see. Municipal amendments vary across Will and DuPage County, so check locally before ordering board. Thickness options are compared in our drywall thickness guide.
What finish level does a garage need?
Level 2 - fire taped - satisfies the rated assembly and is what most builders deliver. If you plan to paint the garage, epoxy the floor, or use it as a shop or gym, go to Level 4 so the walls take paint without every joint showing. Level 5 is unnecessary here. The differences are laid out in Level 3 vs Level 4 drywall finish.
Insulation, vapor, and heated garages
If the garage will be heated, insulate before board goes up and pay attention to the vapor side, or you will trap condensation against cold sheathing through an Illinois winter. Unheated garages still benefit from ceiling insulation when there is living space above. Moisture-managed assemblies are the same discipline we apply to basement drywall.
What changes your garage drywall quote
- Ceiling height above 10 feet and any second-floor living space overhead
- Existing damaged board that has to be removed and disposed of
- Framing that needs shimming, blocking, or furring before hang
- Whether you want Level 2 fire tape or a paint-ready Level 4 with primer
- Insulation, vapor retarder, and whether the space will be heated
- Access - detached garages down a long drive cost more to load and haul
We hang and finish attached and detached garages across Plainfield, Shorewood, New Lenox, and Joliet.
Frequently Asked Questions
How much does it cost to drywall a 2 car garage in Illinois?
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Expect $2,400 to $3,900 hung and fire taped to Level 2, or $3,300 to $5,400 finished to a paint-ready Level 4 with primer. Adding insulation runs another $900 to $2,400.
Does garage drywall have to be fire rated in Illinois?
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The garage side of walls and ceilings separating the garage from living space needs a rated membrane, which in practice means 5/8 inch Type X with taped and finished joints. Local amendments vary, so confirm the exact assembly with your building department.
What finish level does a garage need?
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Level 2, or fire taped, satisfies the rated assembly and is the builder standard. If you plan to paint or use the garage as a shop or gym, upgrade to Level 4 so joints do not show through the paint.
Can I leave garage drywall unfinished?
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Not on a rated separation. Unfinished joints on a garage-to-house assembly are one of the most common inspection failures because the taped joint is part of what makes the membrane rated.
How long does it take to drywall a garage?
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A typical two car garage takes three to five working days - one day to hang, two to three for coats with drying time between, then sanding and priming.
Should I insulate before drywalling my garage?
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Yes, if the garage will be heated or has living space above. Insulation and the vapor detail have to go in before board, and retrofitting later means taking the drywall back down.