Hardwood Floor Refinishing

It removes scratches, gray areas and old stain colour, and it is the only process that resets a floor's appearance completely. It also consumes wear layer, which is why the first question on any refinishing job is how much wood is left.

Key facts

How many times can a floor be refinished?

It depends on the wear layer — the thickness of usable wood above the tongue — not on the age of the floor.

A solid strip floor typically starts with enough material above the tongue for several full sandings across its life. How many remain depends on how many have already happened and how aggressively they were done.

This is measurable rather than a matter of opinion. Lifting a floor vent or a threshold usually exposes the edge of the board, and the distance from the surface down to the top of the tongue can be seen directly.

Engineered flooring is a different calculation entirely. What matters there is the thickness of the hardwood veneer over the plywood core, and thin-veneer engineered products may support only a light abrasion rather than a full sanding.

When refinishing is the wrong answer

If the wear layer is gone, if boards are cupped from an unresolved moisture source, or if damage runs deeper than the sanding depth, refinishing will not fix the floor.

Sanding a cupped floor flat is the most expensive version of this mistake. Once the moisture equalizes, the boards flatten and what was cupped becomes crowned — a worse problem, created by the repair.

The correct sequence is to find the moisture source, let the floor equalize, and only then sand. A contractor who wants to sand a cupped floor next week has not done the first step.

We will say when replacement or partial board replacement is the better answer. Talking a homeowner into a refinish that cannot deliver is how a floor gets two bills instead of one.

The grit sequence is the job

Sanding progresses through successively finer abrasives, and skipping a grit leaves scratches from the coarser one that only appear once the finish goes on.

A typical progression steps from a coarse cut that removes the old finish and levels the surface, through intermediate grits, to a final pass fine enough that the surface takes finish evenly.

This is where the difference between crews shows up, and it is invisible until it is too late. Finish is transparent: it does not hide scratch pattern, it magnifies it under raking light.

Edges, corners and stairs are separate work

The large machine reaches the field of the floor; perimeters, closets, corners and stairs are cut with different equipment and take a disproportionate share of the labour.

A quote that treats a room as a simple square-foot number is quoting the field and ignoring the perimeter. Rooms with many closets, radiators, or built-ins carry more edge work per square foot than an open floor of the same size.

Pre-1978 houses change the job

In housing built before 1978, sanding that disturbs painted baseboards, shoe molding or stair components may fall under the EPA's lead-safe rule.

Across the New Jersey towns we serve, roughly 65% of housing predates 1978, so this is the common case rather than the exception.

Dust containment and lead-safe practice are not the same thing. A containment system manages nuisance dust; the RRP rule addresses a regulated hazard and has its own containment, cleaning and verification requirements.

How VGJ Floors refinishes a wood floor

Frequently asked questions