Biothane (Urethane) Finishes are widely valued as one of the most durable yet easy-to-apply protective wood coatings.  Our Biothane Topcoats and Sealer are water-based and meet environmental regulations.

Water-Based Biothane Finishes dry much more quickly, are more self-leveling and have a less odor when applying than the oil-based versions.  Water-Based Biothane Finishes tend to have a milky-whitish look when applying, but this should disappear as the finish dries.


Bio’s Water-Based Biothane Topcoats provide excellent weather resistance in all climate and premium UV protection.  It provides crystal clear protection for interior and exterior wood surfaces including furniture, doors, floors, window frames, cabinets and much more.

  • Low Odor – Non-Yellowing – Water Clean-up;
  • Apply with a brush, pad, roller or spray application;
  • Dries to the touch in 30 minutes – Re-Coat in 2 hours.


Code & Description

BIO-AU-90  Water Based All-Urethane Topcoat – Gloss

BIO-AU-60  Water Based All-Urethane Topcoat – Semi-Gloss

BIO-AU-20  Water Based All-Urethane Topcoat – Satin

BIO-AU-07  Water Based All-Urethane Topcoat – Flat


Companion Product

BIO-AU-SL  Water Based All-Urethane Sealer


Stir all products well before use.

Available In

Gallon & 5 Gallon Size

Safety Data Sheets (SDSs) are available upon request.



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