Best Sandpaper for Hardwood Floor Refinishing

For most refinishing jobs: Virginia Abrasives semi-closed-coat aluminum oxide on heavy paper backing for the 36, 60, and 80 grit passes; Norton closed-coat for the 100-grit final pass if you’re staining or using water-based polyurethane; 3M as the fallback if neither is in stock. Match every drum grit on the edger. Finish with a 120-grit buffer screen. The rest of this guide explains why those picks and shows you which to buy for your specific job.

Where this article fits in your project

You’re about to rent a drum sander, edger, and buffer for a weekend, walk into the rental shop with a credit card, and try not to over-buy. Or you’re a handyman pricing your third floor refinish of the year and looking for the sheet that doesn’t make you change paper twice as often.

Either way, the question isn’t “what’s the best sandpaper” — it’s what sheet, what disc, what screen, in what grit, in what quantity, for the machines you’re actually renting and the floor you’re actually sanding. This guide answers all five, then gets out of the way.

For the start-to-finish process — equipment, technique, dust safety, finish-timing — see our how to sand hardwood floors pillar. For the underlying math on quantity, see our sheet calculator.

Three pre-rental checks (before you buy any sheet)

If you skipped the pillar, the three checks below decide whether buying sandpaper is even the right move.

1. Engineered vs solid? Engineered floors with <3mm wear layer get ruined by a drum sander. Full diagnostic.
2. Pre-1978 house? $15 lead test before you sand. Why.
3. Two separate 15A circuits? Sander on one, HEPA vac on the other. Setup.

If any answer is “no” or “I don’t know,” sort it before you spend money on sheets.

Picks by how you’re going to use it

Your situation	Best drum sheet	Best edger disc	Where to buy
One floor, one weekend, oil-based clear poly	Virginia Abrasives 36 / 60 / 80, skip 100	VA PSA 36 / 60 / 80	VA 36 · 60 · 80
One floor, one weekend, water-based or stain	Virginia Abrasives 36 / 60 / 80, plus Norton closed-coat 100	VA PSA 36 / 60 / 80, Norton 100	VA 36 · 60 · 80 + Norton 100-grit Amazon search
Light pro, 3–6 floors a year	Virginia Abrasives 36 / 60 / 80 for cut, Norton closed-coat 100 for finish	VA hook-and-loop for fast changes; Norton 100 H&L	VA 36 · 60 · 80 + Norton search
Hard species (hickory, jatoba, hard maple)	Virginia Abrasives Monster ceramic drum covers (or Norton SG / 3M Cubitron)	Monster ceramic discs	VA Monster line · VA store on Amazon
Engineered floor (any species)	VA 100 grit only, single pass, light pressure	VA 100 grit only	VA 100
Pre-1978 floor (suspected lead)	None — test first	None — test first	Lead test kit at any hardware store

The Norton links carry the same affiliate tag as ours — we earn the same small commission whichever brand you pick, so every recommendation here is by fit, not payout. The Monster line link goes to the manufacturer’s site and earns us nothing; same for the lead test kit.

Why these picks — the mechanism

Virginia Abrasives for cut grits (36, 60, 80)

VA sheets are semi-closed-coat aluminum oxide on heavy (E-weight) paper backing. VA’s own product literature credits the semi-closed coating with resisting loading from old coatings during refinish work — the grain coverage leaves enough dust-clearance that old polyurethane and finish dust fall away instead of welding into the abrasive, while still cutting faster than a fully open coat. On a typical refinish where the 36-grit pass is cutting through years of poly, that loading resistance is what keeps a sheet cutting instead of glazing. The aluminum oxide grain is fine for cut grits; the closed-coat finish-grit premium doesn’t apply yet at this stage.

Norton for the 100-grit final pass (water-based or stain)

Norton’s closed-coat aluminum oxide is denser grain coverage with a finer, more consistent particle size at 100 grit. On bare wood (no old finish loading the sheet), the closed-coat geometry cuts a more uniform scratch pattern than VA’s semi-closed coat. Under water-based polyurethane — which is transparent and reveals surface texture — that scratch consistency reads as a smoother floor. For stain work, the more uniform scratch pattern absorbs stain more evenly and reduces blotching. We earn the same small commission on Norton as on VA; we recommend it because at this specific stage it produces a better-looking floor.

3M as the fallback

3M closed-coat 8×19.5” sheets are the middle option — slightly cheaper than Norton, slightly less consistent. Pick 3M only if Norton isn’t in stock. They’re widely available at rental supply centers and big-box stores.

Ceramic-grain for hard species

Aluminum oxide grains dull fast on Janka 1,500+ species (hickory, jatoba, exotic hardwoods). Ceramic alumina is microcrystalline — the grain micro-fractures as it cuts, constantly exposing new sharp edges. Virginia Abrasives’ ceramic line for floors is Monster (semi-closed coat, phenolic-resin bond, available as belts, drum covers, and discs); Norton SG and 3M Cubitron are the other ceramic options. On standard red oak, ceramic is overkill and a waste of money. On hickory, ceramic uses roughly half the sheets at a higher per-sheet price — net cheaper, faster, and produces a better finish. See our sandpaper types guide for the full mineral comparison.

How many sheets — measure first, then buy

Three quantities matter: room square footage, floor condition, species hardness.

Step 1: measure. Length × width minus closets and built-ins. Round up. A typical bedroom (12×14 = 168 sq ft) call 175. Kitchen with cabinets and island: add 20%. Each stair landing: +25 sq ft.

Step 2: baseline grit budget (red oak, normal condition)

Sq ft	36 grit	60 grit	80 grit	100 grit (opt)	7” edger discs per grit	120 buffer screens
150	2	1	1	1	2	1
300	3	2	2	2	3	1–2
500	4–5	3	3	2	4	2
800	6–8	4	4	3	6	2–3

Step 3: adjust

• Heavy old polyurethane: +50% on 36 grit
• Paint on the floor: see paint removal guide — different budget
• Hard maple: +20% across all grits
• Hickory: +40% across all grits (or switch to ceramic)
• Brazilian cherry / jatoba: nearly 2× (definitely switch to ceramic)
• Engineered (wear layer >3 mm): 100-grit only, double quantity, light pressure

Add one extra sheet per grit as insurance. Running out at 4 PM Saturday with the rental ending Sunday morning is how a one-day job becomes a three-day job. For the full math (species multipliers, ceramic-grain economics, worked examples), see our sheet calculator.

One unit mismatch to expect at checkout: this table talks in sheets, but VA’s Amazon listings are 50-sheet contractor packs (about $85–90 for the 36-grit pack as of June 2026 — roughly $1.40–1.80 per sheet). For a light pro the pack pencils out across jobs; a one-floor DIYer should expect the 50-pack price and treat the leftovers as spares, or buy loose sheets at the rental counter.

Machine compatibility

The 8×19.5” sheet size in the table above fits the most common rental drum sanders:

Machine	Sheet size	Guide
Clarke DU-8	8 × 19.5”	DU-8 guide
Clarke EZ-8 (older clamp-bar)	8 × 19.5”	EZ-8 guide
Clarke EZ-8 (newer expandable)	8 × 19” belts (different)	EZ-8 guide
Silverline SL-8	8 × 20-1/8”	SL-8 guide
Hiretech HT8	8 × 19.5”	—
Lagler Hummel (belt, not sheet)	7-7/8 × 29-1/2”	Hummel guide

Verify the size your rental shop’s machine takes before you buy. The DU-8/EZ-8 clamp/HT8 share size — they’re the most common rental drums. The SL-8 takes a slightly longer sheet. The Hummel takes a continuous belt, not a sheet.

For 7” edger discs (Clarke Super 7R and equivalents), see our edger disc guide.

Coat density — open, semi-closed, closed

Open coat (50–70% grain coverage, with dust-clearance gaps) and semi-closed coat both resist loading and win when:

• You’re cutting through old polyurethane, paint, or anything gummy
• The wood is soft and produces fibrous dust (pine, fir)
• You’re at coarse grits (36, 60) where dust loading is the main failure mode

Closed coat (90–100% grain coverage) wins when:

• The wood is bare and clean (no finish loading the sheet)
• You’re at fine grits (80, 100) where scratch-pattern uniformity matters
• You’re sanding hardwood and surface quality is the goal

Virginia Abrasives’ floor line is semi-closed coat — VA’s own literature credits it with resisting loading from old coatings, which is why it’s the right call for the 36–80 cut passes. Norton’s closed-coat 100 grit is the finish-pass upgrade. Most refinish jobs run VA semi-closed for 36/60/80, then closed-coat for the 100. Mixing brands by stage isn’t unusual for light pros — it produces the best result at the lowest total cost.

Buffer screens

After the drum and edger, the buffer with a 120-grit silicon-carbide screen blends the drum’s straight-line scratch pattern with the edger’s semicircular pattern. Skipping the buffer screen is the most common cause of visible drum-pattern ghosting under finish.

Use 120 grit for clear-coat prep, 150 grit if you’re staining (the finer pattern absorbs stain more evenly), and 180–220 grit between coats of polyurethane.

Virginia Abrasives, Norton, and 3M all make 16” and 17” buffer screens. Brand differentiation matters less here than at the drum sheets — buy whatever your buffer’s pad driver accepts.

What to skip

• Bargain-bin no-name drum sheets at the big-box hardware store. Light A/C-weight paper and a glue bond instead of heavy E-weight paper and a resin bond. Tears within the first 50 sq ft of a 36-grit pass. The $5 savings costs you an hour of sheet changes. (The backing to want is heavy E-weight paper — that’s what the verified VA sheets use — not cheap light paper.)
• PSA (sticky-back) sheets for drum sanders. Drum sanders use clamp-bar or expandable-drum mounting, not adhesive. PSA is for edger discs.
• Anything finer than 100 grit on the drum. Closes the wood grain (burnishing) and blocks stain absorption. Save fine grit for the buffer.
• Ceramic grain on standard oak. Pure cost without benefit. Aluminum oxide is the right call until you hit Janka 1,500+.

Quick summary

• Cut grits (36, 60, 80): Virginia Abrasives semi-closed coat. Affiliate link.
• Finish grit (100, when staining or water-based poly): Norton closed-coat — same commission either way.
• Hard species: Ceramic-grain throughout — the Monster line link goes to the manufacturer’s site (no commission there).
• Edger: Match drum grit at every stage — verified VA discs at 60 grit and 100 grit. See edger disc guide.
• Buffer: 120-grit screen for clear, 150 for stain, 180–220 between coats.
• Quantity: Measure room, use table above, add 25% safety margin.

For the start-to-finish process, see our how to sand hardwood floors pillar. For the deeper math on quantity, see the sheet calculator. For machine-specific sheets: DU-8, EZ-8, SL-8, Hummel.

Skip the 100-grit pass at your own risk on water-based finishes. Skip the buffer screen at your own risk on any finish. Don’t skip the lead test if the house is pre-1978.

Matt.