Paint ThinnerGenerating image…
Paint & Primers
Solvent
$5-$15 per gallon

Paint Thinner (Mineral Spirits) (2026)

Prepared by Lumberama's Building Materials Team
|Last updated May 15, 2026|Sources & methodology

Paint thinner, also known as mineral spirits, is a petroleum-based solvent used to thin oil-based paints, stains, and varnishes, and to clean brushes, rollers, and spray equipment after use with oil-based products. Low-odor formulations are available for improved comfort during indoor use. Essential for anyone working with oil-based finishes.

Key Features

  • Thins oil-based paints and stains
  • Cleans brushes and spray equipment
  • Low-odor options available
  • Removes adhesive residue
  • Degreasing capability

Specifications

Types: Standard mineral spirits
low-odor mineral spirits
odorless mineral spirits | Flash Point: 105-145F | VOC Content: Varies by type and state regulations | Sizes: Quart
gallon | Cleanup: Allow to settle
reuse clear solvent

Applications

  • Thinning oil-based paint
  • Brush and tool cleanup
  • Spray equipment cleaning
  • Adhesive removal
  • Surface degreasing before painting

Installation Overview

For thinning: add small amounts to oil-based paint and stir until desired consistency is reached. For cleanup: soak brushes in thinner, work bristles to release paint, then wash with soap and water. Allow used thinner to settle in a sealed container and reuse the clear portion.

Pros & Cons

Pros

  • ✓ Essential for oil-based products
  • ✓ Effective brush cleaner
  • ✓ Can be recycled by settling
  • ✓ Low-odor options available

Cons

  • ✗ Flammable
  • ✗ Strong odor (standard formula)
  • ✗ VOC content regulated
  • ✗ Must be disposed of properly as hazardous waste

Top Brands

Rust-Oleum

Code Requirements

VOC regulations restrict use in some states. Must be stored away from heat sources. Dispose of as hazardous waste per local regulations. Rags soaked in paint thinner are a spontaneous combustion risk and must be dried flat or stored in water.

Buying Tips

Buy low-odor mineral spirits for indoor use. Allow used thinner to settle and reuse the clear portion to reduce waste. Store in a cool, well-ventilated area away from heat. Spread used rags flat to dry rather than balling them up.

Frequently Asked Questions

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