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Woodworking Math

Oil-based polyurethane

General Finishes Gel Topcoat

The figures General Finishes prints for General Finishes Gel Topcoat on its own data sheet, at the conditions it names. Where the sheet doesn't give a figure, this page says so rather than borrow one from another product.

Dry to the touch
8+ h
Recoat
24+ h
Ready for use
Not on the sheet we read
Full cure
Not on the sheet we read
Coverage
up to 600 sq ft per gallon
Thinning
Not recommended
VOC
566 g/L
Conditions
70 °F, 50 % RH
Indoors or out
Interior
Food contact
The sheet we read makes no food-contact statement

One source: General Finishes, the maker of that product

From the sheet: A thick oil and urethane topcoat; the sheet gives no cure time.

Against its kind

General Finishes Gel Topcoat is one of the products in oil-based polyurethanes; here is that kind across every maker we have read.

Oil-based polyurethanes: recoat across makers

4 h

span 3–24 h

Median of 3 sources

Oil-based polyurethanes: coverage across makers

500 sq ft/gal

span 500–700 sq ft/gal, per coat

Median of 3 sources

Related

Work it out for your project

Sources

  1. General Finishes, Gel Topcoat technical data sheet (March 2020), read 2026-11-08.

How the tags work: How we source every number.