Epifanes Polyurethane Paint & Varnish Calculator

How to Use the Epifanes Polyurethane Calculator

Epifanes Poly-urethane is a two-component topcoat that requires precise mixing of base and hardener. This calculator gives you the exact amounts for your batch size, with thinning guidance.

1. Select your product — Choose from the six Epifanes Poly-urethane products, standard or PU Speedcoat.
2. Choose an application method — Brush/Roll or Spray. PU Speedcoat products are spray-only, so Brush/Roll is disabled for those.
3. Enter total volume needed — Input how much mixed product you need, and select mL, oz, L, qt, or gal.
4. Read the result — The calculator shows exact base and hardener amounts, with thinning guidance. Results update automatically.

Key facts

• Mix ratio: Epifanes specifies 2 parts base : 1 part hardener by weight; this calculator gives you the volume equivalent.
• Pot life: Approximately 3 hours at 68°F — mix only what you can use.
• Thinning: Standard line 0–15% brush/roll or 15–20% spray; PU Speedcoat 15–20% spray only. See the product's TDS for the exact thinner to use.
• Recoat window: 24–48 hours between coats at 68°F.

Written by Leonardo Williams, founder of ChemCalc. Last reviewed October 20, 2026.