Finishes — 5 min read
Water-Based vs Oil-Based Finishes
Modern waterborne finishes outperform oil-based polyurethane on nearly every measure. The one thing oil-based still does is amber — and some people want that.
The old reputation is out of date
For a long time oil-based polyurethane was tougher, and early waterborne finishes deserved their reputation for being thin and easily scuffed.
That has not been true for well over a decade. Commercial-grade two-component waterborne systems now outperform oil-based polyurethane in abrasion testing, and they are what gets specified for gymnasium and retail floors.
Color over time
Oil-based polyurethane ambers. It goes on with a warm amber tone and continues yellowing for the life of the finish. Every orange oak floor you have ever disliked is mostly this, not the wood.
Waterborne finishes dry clear and stay clear. Whatever the floor looks like the week it is finished is roughly what it will look like in ten years.
This is the one genuine argument for oil-based: if you want a warm amber glow on a historic floor and you want it to deepen, oil-based delivers something waterborne cannot replicate exactly.
Living with the application
Oil-based is high-VOC with a strong solvent odor that lingers for days, and it needs eight to twenty-four hours between coats. Most households cannot stay in the home comfortably.
Waterborne is low-VOC with mild odor, recoats in two to four hours, and lets a project finish in days instead of a week. Most clients stay home throughout.
What we use
Waterborne systems, in nearly every case. Better performance, better air quality, faster return to normal life, and no ambering.
For a historic restoration where the client specifically wants the traditional amber warmth, we will talk it through honestly — and we can often get very close using a tinted sealer beneath a waterborne finish, which keeps the air quality benefit.