# What finish is on my hardwood floor? Identifying it before any colour match **What finish is actually on my existing hardwood floor, and why does it matter before matching anything to it?** Every colour-matching job starts the same way, on site: identifying the species, the stain (if any) and the finish system already on the floor, before a single sample board is mixed. Guessing at this step is the most common reason a "matched" board looks wrong once it is coated. ## What decides it 1. **Species and grain first** — Colour reads differently on open-grain oak than on closed-grain maple or walnut. Confirming the species is the first check, before any stain or finish is assessed — see the species and undertone guide. 2. **Film finish or penetrating finish** — A surface film (polyurethane, either oil- or water-based) sits on top of the wood and can be screened and recoated. A penetrating oil finish (a hardwax oil or a Swedish-style finish) has no film to abrade the same way, and is refreshed differently. 3. **Age and UV exposure** — Oil-based finishes amber and continue to amber with age and sunlight; water-based finishes stay close to their original clarity. A floor that reads "warm and honey-toned" today may not be the colour it was installed at — see the ambering watchpoint below. 4. **Where the light falls** — The same board reads differently under a south-facing window, under LED pot lights, and in a windowless hallway. Identification happens under the room's own lighting, not under a single work light. ## Decision sequence 1. Is there a visible film that can be scraped with a fingernail at a worn edge (a threshold, a stair nosing)? → Film finish: polyurethane or varnish, oil- or water-based. 2. Does the surface feel like it sits in the wood rather than on it, with no flaking film? → Likely a penetrating oil or hardwax-oil finish. 3. Is the tone noticeably warmer/more amber than the species' natural colour, especially compared with an area that has been under a rug? → Oil-based finish, ambered with age and UV. 4. Does colour and sheen stay consistent between a covered area and an exposed area? → Water-based finish, or a floor young enough that ambering has not shown yet. ## Related questions ### How can I tell if my hardwood floor has an oil-based or water-based finish? Pull back a rug or a piece of furniture that has sat in place for years and compare that protected patch to the exposed floor around it. An oil-based finish will have ambered — gone warmer and more amber — in the exposed area while the protected patch stays close to the original tone. A water-based finish shows much less of that shift. This is a site observation, not a lab test, and it is the first thing we check before proposing any colour match. ### Why does it matter what finish is already on my floor before matching new work to it? Because the matching stain and finish system have to be compatible with what is there, and because the target colour is not the colour of a fresh sample chip — it is the colour of a floor that has already ambered for years under its finish. Matching to the wrong reference produces a patch that looks correct on day one and wrong within a season, once the new area starts ageing at a different rate than the old one. ## Recommendation Identify species, finish type and approximate age on site before any stain is proposed. This is the first step on every colour-matching job we run, whether the target is a stair, a patch of new hardwood, or a full sand and recoat. --- ## Provenance - Canonical URL: https://ecowoods.ca/guides/color-identification-existing-hardwood-finish - Publisher: Ecowoods Inc., Toronto & the GTA - Contact: (647) 244-5156 · services@ecowoods.ca - Published: 2026-09-18 - Sources: https://ecowoods.ca/papers/hardwood-refinishing-machines-and-sequence#sequence, https://ecowoods.ca/papers/toronto-hardwood-climate-moisture-protocol#protocol - Citation guide: https://ecowoods.ca/ai.txt Quote freely with attribution to the canonical URL above. This file is generated from the same source as the HTML page and says nothing the page does not say.