Wood floor decisions and DIY guides
By Wood Floor Report Editorial. Last reviewed August 2026. How we research this.
In brief
Every question this site answers starts as one of three. What will it cost? A professional sand and refinish runs $3 to $8 per square foot, per NerdWallet, and the cost hub and calculator turn that range into a number for your rooms. Can my floor be refinished at all?
That depends on the wood above the tongue: National Wood Flooring Association guidelines say a floor with less than 2.5 mm (3/32 inch) of wear thickness should not be sanded, and the engineered hardwood guide shows how to find your number. Full sand or screen and recoat?
When the damage lives in the finish rather than the wood, the lighter job costs a fraction of the full one, and the screen and recoat guide makes the call. The 10 guides below are grouped the way the work divides: decisions first, then doing it yourself.
The three questions
These guides exist to move you from a worry to a job name. Each one serves one of the three questions in this table, and each links the cost figure it moves. So the decision and the price stay on the same screen.
| The question | Start with | The number that frames it |
|---|---|---|
| What will it cost? | The cost hub and the calculator | $3 to $8 per square foot for a professional sand and refinish, per NerdWallet. HomeAdvisor puts the average project at $1,891 |
| Can my floor be refinished at all? | Engineered hardwood, then how many times | Below 2.5 mm (3/32 inch) of wear thickness, NWFA guidelines say do not sand |
| Full sand or screen and recoat? | Screen and recoat, then signs you need refinishing | Screening runs $1 to $2.50 and recoating $1 to $2 per square foot, per Fixr, against $3 to $8 for a full sand, per NerdWallet |
Method and sources: the dollar figures are national editorial ranges read 2026-08-28 from the NerdWallet, HomeAdvisor. And Fixr cost guides. Fixr prices screening and recoating as separate steps. So a combined screen and recoat is the two added together. The sanding threshold is from the National Wood Flooring Association Sand and Finish Guidelines, as published by Hardwood Floors Magazine.
If a term in that table is new, the floors section explains the work itself: sanding is the heavy step that takes a drum sander and edger down to bare wood, and buffing is the light one that only scuffs the finish.
Decision guides
Seven pages, ordered roughly by where they fall in a real project: whether to do anything, how light the job can be. And what your floor can survive.
| Guide | What it answers |
|---|---|
| Refinish or replace | The threshold decision. NerdWallet says refinishing is almost always cheaper than replacing, and this page tests the cases where that flips. |
| Signs you need refinishing | How to read wear honestly: which marks live in the finish. That live in the wood, and which job each one calls for. |
| Screen and recoat | The lighter job. Abrade the finish, lay a new coat, expose no bare wood. One day of work plus 24 hours of drying, per The Flooring Girl. |
| Engineered hardwood | Whether your floor can be sanded at all. The answer is the wear layer, measured against the NWFA line of 2.5 mm. |
| How many times | The sanding budget in a floor. NWFA guidance puts one professional sand at under 1/32 inch of wood removed. This page counts what is left. |
| How long does it take | The calendar. Three to five days for a full sand and refinish, per GoFlooring, most of it finish dry time. |
| Parquet floors | Pattern floors whose grain runs in several directions at once. Fixr prices parquet refinishing at $3.50 to $6 per square foot. |
Doing it yourself
Three pages for the reader planning to hold the sander. The honest math first: This Old House puts DIY materials, rentals, and safety equipment at $500 to $1,000. And these guides say plainly where that spend goes wrong.
| Guide | What it answers |
|---|---|
| How to refinish hardwood floors | The full walkthrough: renting the drum sander and edger, running the grit sequence. And laying the finish coats in order. |
| DIY mistakes | The errors that cost the most, and the point in the job where each one happens, so you can stop before it does. |
| Refinishing without sanding | The no-sand menu: screening, chemical bonding systems such as Basic Coatings TyKote, and what none of them can fix. |
You may not need a full refinish
Most floors that look tired do not need the full job at $3 to $8 per square foot, per NerdWallet. HomeAdvisor says to plan on a refinish every seven to 10 years. And between those years the wear usually lives in the finish, not the wood. If the scratches are shallow and you are keeping the color, screening at $1 to $2.50 per square foot plus recoating at $1 to $2, per Fixr, renews the surface for a fraction of a full sand. The limits are real: The Flooring Girl notes a screen and recoat cannot fix deep scratches, color changes, waxed floors, or boards grayed by oxidation. Read signs you need refinishing before pricing anything bigger.
We do not sell flooring and we do not refinish floors. So nothing about which job you choose changes what we earn. The point is to buy the smaller job when it will do.
What this section covers, and what it leaves out
the lane boundary, in one paragraph
These guides cover wood floors that already exist: solid hardwood such as red oak, white oak, maple, and pine, plus engineered wood and parquet. They cover the decisions those floors raise and the work of renewing them, whether the finish going back down is oil-based polyurethane, waterborne polyurethane, or something older. They do not cover shopping for new flooring, installing it, or any non-wood floor. Where a decision needs a replacement number to be honest, the page states the number and stops. The choice itself lives at refinish or replace. One page owns each question, so when two guides sit close together, each says which question it answers and hands you to the other.
Common questions
What does it cost to refinish hardwood floors?
The national band is $3 to $8 per square foot, a range NerdWallet, HomeAdvisor, Fixr. And This Old House all publish independently. HomeAdvisor puts the average project at $1,891 and Bob Vila at $1,869. The cost hub breaks the range down by job. And the calculator applies it to your own square footage and condition.
Can every wood floor be refinished?
No. National Wood Flooring Association guidelines say a floor with less than 2.5 mm (3/32 inch) of wear thickness should not be sanded. Thin engineered floors and veneer-on-HDF products fail that test. And Kahrs states plainly that its 7 mm veneer floors should not be re-sanded. The engineered hardwood guide shows how to find the wear layer number for your floor.
What is a screen and recoat?
The light renewal job: an abrasive screen on a floor buffer scuffs the old finish, then a fresh coat of polyurethane goes over it. No bare wood is exposed. The Flooring Girl says it takes one day of work plus 24 hours of drying. And that it cannot fix deep scratches, color changes, waxed floors, or boards grayed by oxidation. The full walkthrough is at screen and recoat.
Is refinishing a floor myself worth it?
Sometimes. This Old House puts DIY materials, rentals, and safety equipment at $500 to $1,000, while NerdWallet prices 1,000 square feet of professional work at $3,000 to $8,000. The savings are real, and so are the ways an inexperienced pass with a rented sander can hurt the wood. Start with the walkthrough, read DIY mistakes before renting anything, then run the math at DIY refinishing cost.
How long will the work take?
Plan on three to five days for a full sand and refinish, per GoFlooring, with finish dry time driving most of the calendar: water-based coats dry in as little as two to four hours, oil-based in up to 24, per the same source. A screen and recoat is one day of work plus 24 hours of drying, per The Flooring Girl. The schedule, day by day, is at how long does it take.
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