Brooklyn · NYC · Nassau · Long Island
Hardwood floor refinishing & sanding in Brooklyn, NYC & Nassau
Gemini Floor Services sands and refinishes hardwood for Brooklyn apartments, co-ops, and Long Island homes. Dust-controlled Hummel and Galaxy sanders, stain match or new color, then low-odor water-based polyurethane (oil-based available). Family-owned — not a franchise — licensed, insured, 5-year workmanship warranty. Brooklyn: 229 Sumter St. Call (718) 690-3435 or Nassau (516) 209-6998.
How hardwood floor refinishing works
- Walk-through & measure — Confirm species, wear, repairs, stain/finish choice. Free on-site estimate; or start with the Instant Preliminary Estimate for hardwood refinish planning.
- Prep — Clear furniture from work areas; protect adjacent rooms as needed. Co-ops/buildings: we work within building rules and can provide proof of insurance (licensed & insured).
- Sand — Existing finish plus about 1/32″ of wood removed with Hummel & Galaxy machines that have inbuilt vacuums for minimum dust.
- Repair — Wood filler where sanding alone won’t fix gaps or damage.
- Stain (optional) — Match existing, choose new, or leave natural. We use Duraseal & Minwax; bleaching/pickling for light woods; sample spots before committing. The estimate form also lists Bona DriFast and Minwax color options.
- Finish — Default path on the estimate tool: water-based polyurethane, 3 coats. Oil-based available when you want higher gloss and accept longer dry times and more odor.
- Cure & walk-on — See timeline below; final walkthrough and care notes.
Timeline / walk-on
Job length still depends on square footage, repairs, stain vs natural, and building access — confirmed on estimate, not published as a fixed day count.
| Finish | Between coats | Foot traffic |
|---|---|---|
| Water-based acrylic polyurethane (typical 3 coats) | About 1 hour between coats | Ready for foot traffic within 24 hours |
| Oil-based polyurethane (typical 2–3 coats) | About 12 hours between coats | Foot traffic recommended after 24–48 hours |
Dust control for NYC apartments & co-ops
- Top-line Hummel & Galaxy sanders with inbuilt vacuums for minimum dust — belongings don’t need the old-school “plastic everything” panic for sanding dust alone.
- Still expect some fine dust and odor management — especially with oil-based finish. We plan for hallways, shared landings, and neighbor-friendly work hours when the building requires them.
- Water-based finish: fast drying, eco-friendly, very low odor. Better default for occupied apartments.
Pets during refinishing
- Keep pets off the work floors during sanding, staining, and finish coats.
- Water-based is the lower-odor option; oil-based means more fumes and longer windows before pets should be back on the floor.
- We’ll tell you when soft-paw traffic is OK after the last coat — don’t rush it and mark the finish.
Warranty
5-year workmanship warranty. Covers our workmanship as stated on the job — not wear-and-tear abuse, flooding, or someone else’s later modifications. Ask on the estimate for what’s included in writing.
Who this is for
- Homes & brownstones — full-floor sand & stain, color change, wear refresh.
- Apartments & co-ops — dust-controlled sanding, low-odor water-based finish, building-friendly scheduling.
- Commercial — offices, shops, and other spaces where traffic wore the finish. Gemini works residences and businesses of all sizes.
What drives price (no published $/sq ft)
The live Instant Preliminary Estimate is a preliminary guide only — final price after free on-site measure. The form does not publish a public $/sq ft rate list.
What drives price per square foot:
- Recoat only vs full sand & stain
- Square footage and layout (open rooms vs many closets/halls)
- Floor style complexity (strip/plank vs wide plank, herringbone, parquet, borders, stairs & rails)
- Repairs / filler / board replacement
- Stain vs natural; custom color match
- Water-based vs oil-based system; sheen
- Base mouldings / quarter round if included
- Access (walk-up, elevator booking, co-op work windows)
Use the calculator for a ballpark, then call for on-site.
Gemini Floor Services
Owner Dyal Ramnarine
Brooklyn HQ: 229 Sumter St, Brooklyn NY 11233 · (718) 690-3435
Nassau: 220 N Columbus Ave, Freeport NY 11520 · (516) 209-6998
LI: (631) 739-8353 · info@geminifloors.com
Frequently asked questions
Does hardwood floor sanding make a lot of dust in a NYC apartment?
We sand with Hummel and Galaxy machines that have inbuilt vacuums for minimum dust. You still get some fine dust and job mess — that’s normal — but it’s not the old open-sander cloud. We work room by room and keep shared hallways as clean as the building expects.
How long do I need to be out of the apartment?
For water-based polyurethane, the live process is about one hour between coats and foot traffic within about 24 hours after the last coat. Oil-based needs longer between coats (~12 hours) and foot traffic more like 24–48 hours. Full sand-and-stain of a whole apartment usually means planning around a multi-day window once we measure — we’ll give you the schedule on the estimate, not a one-size guess here.
What about pets during refinishing?
Keep pets off the floors while we sand, stain, and coat. Choose water-based if odor is the worry. Wait for our OK before pets walk the new finish so claws don’t mark soft film.
Can you work in a co-op or condo with building rules?
Yes. We’re licensed and insured and can provide insurance paperwork buildings ask for. Tell us elevator times, work hours, and any certificate rules up front so the job is booked cleanly.
Water-based vs oil-based polyurethane — which should I pick?
Water-based: low odor, faster dry (~1 hour between coats), foot traffic within ~24 hours, typical 3 coats — our default on the Instant Preliminary Estimate. Oil-based: can give a higher gloss, more fumes, ~12 hours between coats, foot traffic after ~24–48 hours. Most occupied apartments lean water-based.
What drives the price per square foot?
Square footage, recoat vs full sand and stain, repairs, stain/color work, pattern complexity (including stairs), finish system, mouldings, and building access. Our Instant Preliminary Estimate gives a planning number from room size and options; final price is after a free on-site measure. We don’t publish a fixed public $/sq ft rate on the estimate page.