Custom tile & stone
Porcelain, ceramic, marble and slate. Curbless showers, niches, herringbone and mud-set pans — waterproofed to spec, not to the minimum.
Home / Service Areas / Stewartsville, NJ
We work on the canal-era farmhouses along Washington Street and the newer builds off Stewartsville–Broadway Road — two very different subfloors, one crew that knows both.

Stewartsville, New Jersey
DeMarco Flooring, Tile & Renovations is a family-run flooring and tile contractor serving Stewartsville, NJ (08886) and the rest of Greenwich Township. We install porcelain and natural-stone tile, hardwood, luxury vinyl plank and heated floors, and we handle full bathroom, kitchen and basement renovations. We work out of a home office in Bloomsbury — there's no showroom to drive to. We come to you: we measure in your house, bring samples to your rooms and your light, and there is never a charge for travel. One crew runs your job start to finish, so the person who measures your floor is the person who lays it. Estimates are free and we're fully insured.
Stewartsville's housing stock is genuinely mixed, and that changes how a floor goes in. The village core near the old Morris Canal line has 19th-century homes with plank subfloors and settled joists that need leveling before anything rigid gets laid. The ranches and split-levels off Route 57 sit on slab or block foundations where moisture testing matters more than flatness. The newer developments toward New Village are OSB over engineered trusses — fast, flat, and forgiving. We quote each one differently because they are not the same job.
Get a Stewartsville estimateWhat we install
Every line below is work we've done in and around Greenwich Township. Pricing is per job, quoted after we've stood in the room and put a level on the floor.
Porcelain, ceramic, marble and slate. Curbless showers, niches, herringbone and mud-set pans — waterproofed to spec, not to the minimum.
Solid and engineered hardwood, LVP, laminate. On older floors we sister and shim the joists first so the finish floor doesn't telegraph the dip.
Full gut to finish trim: vanities, tile surrounds, glass, lighting and heated floor mats under the tile for the cold months.
Backsplashes, floors, cabinet and counter coordination. We sequence around your appliance delivery so the kitchen isn't down longer than it needs to be.
Below-grade slabs get a moisture read before anything is laid. Framing, drywall, paint and a floor system rated for the humidity swings we get here.
Cracked field tile, failed grout, loose shower pans and hollow spots. Often a half-day fix instead of the full tear-out someone else quoted you.
Local conditions
In Stewartsville basements — especially the ones on the low side of Pohatcong Creek and the old canal cut — we install rigid-core SPC vinyl or porcelain tile over the slab, never solid hardwood. Warren County slabs move moisture year-round, and summer humidity here regularly pushes past 70%. We run a calcium chloride or RH probe test before quoting, then set an underlayment or membrane matched to the reading. Engineered wood is possible over a proper moisture barrier, but SPC and tile are the two that don't come back on us.
Usually, yes. Homes in the village core date to the canal era, and after 150 years the joists have settled unevenly — we routinely find 3/8 to 3/4 of an inch of deflection across a single room. Tile cracks and floating floors click when you lay them over that. We self-level or sister the framing first, add a second layer of plywood where the span calls for it, and only then install. It adds a day; it saves the floor.
Wood and laminate need to acclimate to your house before they go down. Between December and March, when indoor humidity in this part of New Jersey drops into the 20s, we deliver the material 3 to 5 days early and let it sit in the room at living temperature. Tile is less fussy but thinset still wants the space above 50°F for a proper cure. If your heat is off during a renovation, tell us — we plan around it rather than gambling on it.
Our regular route runs east–west along I-78 and Route 22, from Stewartsville in Warren County through Hunterdon and out to Somerville. We work in these towns most weeks, and we never charge for travel to any of them.
Job log
A full primary bath in travertine-look porcelain. The scroll mosaic border carries the whole way around the room and ties the shower, the tub wall and the vanity backsplash together — one line, four surfaces, no breaks at the corners. Oil-rubbed bronze throughout, with a rain head, body sprays and a hand shower on a slide bar. The shower pan is pebble mosaic, pitched to a centre drain, over a waterproofed and sloped mud bed.



Questions
For most bathroom remodels in Stewartsville, yes. Stewartsville is part of Greenwich Township, and the New Jersey Uniform Construction Code requires permits for plumbing, electrical and structural work — which covers moving a drain, adding a circuit for a heated floor, or taking out a wall. Swapping tile or flooring in the same footprint with no plumbing or wiring changes generally does not need one. We pull the permits through the Greenwich Township construction office and meet the inspector on site; confirm current requirements with the township before you schedule, since fee schedules change.
Plan on 2 to 3 weeks for a standard Stewartsville bathroom, from demo to final trim. A typical run: demo and rough plumbing in days 1 to 3, inspection, waterproofing and tile through the second week, then vanity, glass, paint and fixtures. Custom tile patterns, a curbless pan or a special-order vanity add time. If you only have one bathroom in the house, tell us early — we stage the work to keep it usable as long as possible.
In most cases, yes. Homes near the old Morris Canal line often have wide-plank pine or narrow oak strip flooring that's no longer a stock width. We can source milled-to-match material, weave new boards into the existing field so the seam disappears, or refinish the whole floor to a single colour. Bring us a loose board or let us pull one from a closet and we'll tell you honestly whether matching or replacing makes more sense.
We install electric mat systems under tile, most often in bathrooms and basement landings. In Warren County, where January lows sit in the teens, it's the upgrade homeowners mention most after the fact. It has to be planned before tile goes down — the mat, the sensor and the thermostat circuit all get set during rough-in — so raise it at the estimate, not mid-job.
No. We never charge for travel time or mileage, to Stewartsville or anywhere else on our route. The estimate is free too, and it's done in person: we don't quote flooring off a phone call, because the subfloor is the part that decides the price.
No — we run out of a home office in Bloomsbury and there's nothing to walk through there. We bring the showroom to you instead: samples come to your building, so you're choosing tile and plank in the actual room, under your own light, next to your cabinets and trim. If you'd rather meet at your office, that works too.
Yes. DeMarco Flooring, Tile & Renovations is a fully insured New Jersey home improvement contractor. We'll provide our NJ HIC registration number and a current certificate of insurance with your written estimate — ask any contractor for both before work starts.
Free estimate, usually within a week. We measure, check the subfloor, bring samples to look at in the room itself, and send a written number — no travel charge, no deposit to get a quote.