Basic
$0.98 – $2.93 per sq ft
Slate cleaned and degreased, one coat of penetrating sealer for a natural matte look

Clean and apply penetrating or enhancing sealer to an existing slate floor, per sq ft.
Seal Slate Floor in Chicago, Illinois typically costs $1.15 to $3.45 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Chicago are 19.0% higher than the national average for seal slate floor.
National average: $1 – $3 per sq ft
$0.98 – $2.93 per sq ft
Slate cleaned and degreased, one coat of penetrating sealer for a natural matte look
$1.15 – $3.45 per sq ft
Slate deep cleaned, two coats of color-enhancing penetrating sealer to deepen the natural tones
$1.44 – $4.31 per sq ft
Slate deep cleaned, color-enhancing penetrating sealer plus a satin protective topcoat for richer color and soft sheen
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.48 – $1.44 | sq ft |
| Labor | labor | $0.45 – $1.37 | sq ft |
| Supplies & Other | supplies | $0.13 – $0.39 | sq ft |
| Equipment & Disposal | equipment | $0.09 – $0.26 | sq ft |
Multicolor slate floor tiles after cleaning and sealing
Photo: cogdogblog · CC BY 2.0 · Source
Find a pro to do thisSee how seal slate floor looks in each style, with photos of real projects by working designers.
Chicago's housing stock sets the style: greystones and two-flats call for traditional millwork, while converted lofts in Bucktown and the West Loop call for exposed brick, steel and open plan. Prairie School detail and mid-century bungalows are the third reference.
Work by Chicago designers first, then the styles Chicago draws from.
Industrial living room
Photo: Studio Code · Profile
Industrial bedroom
Photo: Studio MAK · Profile
Modern interior
Photo: Studio Novo · Profile
Contemporary interior
Photo: KADLEC Architecture & Design · Profile
Traditional living room
Photo: Emora Design Studio · Profile
Traditional interior
Photo: Jo Lyle & Co. · Profile
Traditional bathroom
Photo: Jennifer Taylor Design · Profile
Traditional bathroom
Photo: Studio Catherine Rose · Profile
Traditional bathroom
Photo: Studio Steidley · Profile
Labor costs in Chicago run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local seal slate floor contractors in Chicago for personalized quotes based on your specific project.