The short answer
- Prep decides the result. The subfloor must be solid, dry and flat to within 3/16 inch over 10 feet (or 1/8 inch over 6 feet). Carpet and other floating floors come out first.
- Leave a gap at every wall and fixed object, usually 1/4 inch. Baseboard and trim are nailed to the wall, never through the planks.
- Stagger the end joints at least 8 inches from row to row, and pull planks from several boxes at once.
- Tools are simple: a utility knife, tape measure, spacers, tapping block, pull bar and a jigsaw for notches. Most cuts are score-and-snap.
- Cost: two rooms of 288 sq ft come to about $1,147 in materials at mid-range prices. A pro would add about $432 to $1,152 in labor.
This guide covers floating, click-lock rigid-core vinyl plank (SPC or WPC), the kind most home centers sell. The rules come from two large makers' install guides. Your product's own guide always wins, because the warranty is written against it.
What vinyl plank can go over
One of the big draws of rigid-core vinyl is that you can often skip the tear-out. The stiff core bridges small flaws, and the floor floats on top. But not every existing floor qualifies.
| Existing floor | OK? | Conditions |
|---|---|---|
| Plywood or OSB subfloor | Yes | Solid, no bounce, screws tight; wood moisture no more than 13% in one guide |
| Concrete slab | Yes | After a moisture test; limits differ by product (see Step 3) |
| Ceramic or porcelain tile | Yes | Firmly bonded; fill grout joints wider than about 1/4 inch |
| Sheet vinyl or vinyl tile | Yes | Fully glued, one layer, not heavily cushioned |
| Carpet and pad | No | Remove it; soft layers break the click joints |
| Laminate or another floating floor | No | Remove it |
| Wood floor glued to concrete, or sleepers | No | Remove it; one maker rules it out |
Each layer you leave raises the floor. Check the height at doorways, the dishwasher opening and stair noses before you commit.
Old resilient floors can hold asbestos. Install guides say to presume old sheet vinyl, vinyl tile and black "cutback" adhesive contain it unless a test says otherwise, and never to sand, dry-scrape or grind them. Floating the new floor over them is usually the safest choice. If they must come out, hire a licensed abatement company.
Tools and materials
| Item | What it's for |
|---|---|
| Utility knife and T-square | Score-and-snap cuts across and along planks |
| Jigsaw | Notches around door casings, vents and corners |
| Drill and spade bit | Holes for pipes (toilet supply, radiator lines) |
| Spacers, tapping block, pull bar | Hold the gap and close joints without hitting the locking edge |
| Jamb saw or oscillating tool | Undercutting door casings |
| 6 to 10 ft straightedge, chalk line | Checking flatness and snapping the first row |
| Trim, transitions, silicone | Covering the gap, doorways and sealing wet rooms |
A basic install kit with spacers, a tapping block and a pull bar costs about $20 at a home center.
The install, step by step
Step 1: Measure and order
Measure each room wall to wall, including closets, and add 10% for cuts on a straight lay. Most rigid-core boxes hold about 20 sq ft, so a 12 x 12 room (144 sq ft) needs 158 sq ft with waste, or 8 boxes. Our flooring calculator does this for several rooms at once and adds the trim and transitions; for L-shaped or odd rooms, split the area up first with the square footage calculator. Buy every box at once and check that the lot or run number matches, because color shifts between production runs.
Step 2: Get the room and the planks ready
Acclimation rules differ more than most people expect. Shaw's COREtec Pro SPC guide says acclimation is not required, as long as the floor goes into a climate-controlled room between 55°F and 85°F. Karndean's rigid-core guide says it's generally not needed in homes if the planks are already between 65°F and 85°F, but is required if they were exposed to extreme temperatures. The practical rule: if the boxes rode in a cold truck or sat in a hot garage, lay them flat in the room for about 48 hours with the heat or air conditioning running. Finish messy work, like painting, first; the paint calculator sizes the walls.
Step 3: Prep the subfloor
- Clear the room. Pull the baseboard or shoe molding (number the pieces if you'll reuse them), remove floor vents, and in a bathroom, remove the toilet.
- Fix the structure. Screw down squeaky or loose subfloor panels and set any proud nail heads. A floor that bounces will open the joints.
- Check flatness. Slide a long straightedge across the floor in several directions. COREtec and Karndean both allow no more than 3/16 inch of dip over 10 feet; COREtec also gives 1/8 inch over 6 feet. Grind or sand high spots and fill low ones with a cement-based patch. Flat is what matters, not level.
- Test a concrete slab. Makers set moisture limits by the calcium chloride test (ASTM F1869) or the in-slab relative humidity test (ASTM F2170). COREtec's limits are 8 lb per 1,000 sq ft per 24 hours or 90% RH; Karndean's are 8 lb or 95% RH. On a damp or new slab, COREtec recommends a 6-mil poly film under the floor, overlapped 4 inches with the seams taped and run 2 inches up the wall.
- Clean. Scrape off old drywall mud and paint drips, then vacuum. A single grain of grit under a joint can keep it from locking.
Underlayment: most rigid-core planks have a pad attached and need nothing else. COREtec allows a second layer up to 3 mm in homes but notes it showed no sound benefit in lab tests. If your guide doesn't allow one, skip it.
Step 4: Undercut the door casings
The floor needs to slide under door casings and jambs, not butt into them. Lay a plank, pad side down, against the casing as a height guide, rest a jamb saw or oscillating blade on it, and cut the casing off at that height. Vacuum the dust out of the slot. Both install guides call for this (or for a gap at the jamb), and it leaves a clean edge with no caulk.
Step 5: Plan the layout
Run the planks parallel to the longest wall or toward the main window, and in the same direction through connected rooms. Then check the last row first: a 1-inch sliver looks bad and barely locks.
Worked example. A room is 12 feet (144 inches) across the rows. Take off 1/4 inch of gap at each wall: 143.5 inches to cover. With planks that show 7 inches of face width, 143.5 ÷ 7 = 20.5, so 20 full rows and a last row of 3.5 inches. That's fine. Now say the math left only 1 inch. Add that inch to one plank width (1 + 7 = 8 inches) and split it: rip the first row to 4 inches, and the last row will also be about 4 inches.
Walls are rarely straight. Snap a chalk line parallel to the starting wall and keep the first row on it, scribing the planks to the wall if the gap varies more than the trim will cover.
Step 6: Lay the first row
Start in a corner with the tongue side (or a cut edge) toward the wall, as Karndean's steps show, and set spacers every couple of feet along the wall and at the end. Click the short ends together along the row. Cut the last plank to length, leaving the same gap at the far wall. If the off-cut is long enough, it starts the second row; that saves material and builds in a natural offset.
Step 7: Click the rest of the floor
Angle the next plank's long side into the first row at about 30 degrees, lower it flat, then slide or drop its short end into the plank beside it. Depending on the locking system, the short end either folds down and clicks under a hand roller or your thumb, or needs a few light taps with the tapping block. COREtec's guide is blunt: any gapping can compromise the lock, so close every seam fully. Let the tapping block take the blow, so it lands on the plank's edge and not on the locking profile.
- Stagger: keep at least 8 inches (200 mm) between end joints in neighboring rows, per both guides, and vary it so you don't get a stair-step or "H" pattern. Tile-look planks go in a brick pattern, offset a third to a half.
- Mix boxes: work from three or four open boxes so similar planks don't cluster.
- Check as you go: a raised edge or hairline gap takes a minute to fix now and a teardown six rows later.
Step 8: Make the cuts
For straight cuts, score the face firmly with a utility knife against a T-square, bend the plank down, and snap. Cut through the pad from the back if it doesn't separate. Use a jigsaw for notches around casings and vents. For a pipe, drill a hole that leaves the wall gap all around (with a 1/4 inch gap, 1/2 inch wider than the pipe), cut a slot from the hole to the plank edge, fit it, and glue the slot piece back. A pipe collar hides the gap. COREtec notes that a cut tapering to a fine point can delaminate; a drop of cyanoacrylate glue holds it together.
Step 9: Doorways and the last row
Under a door casing you can't angle a plank in. Slide it under the undercut, then lock it flat with the tapping block and pull bar. For the last row, measure the gap at a few points, subtract the expansion gap, rip each plank to width, and pull it into place with the pull bar.
Step 10: Finish
- Pull the spacers and vacuum.
- Install baseboard or shoe molding to cover the gap, nailed into the wall. Nothing gets fastened through the planks.
- Fit transitions at doorways and where the floor meets carpet or tile. Transitions are fastened to the subfloor or their track, not to the planks.
- In bathrooms and other wet areas, COREtec calls for a flexible silicone caulk around the perimeter. Karndean allows a flexible sealant where fixed objects meet the floor in wet areas, but not as a general gap filler. It suggests separating the wet room from the rest of the floor with an expansion joint at the door and keeping the sealed area to about 43 sq ft.
- Reset the toilet with a new wax ring and leave the gap around the flange.
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Kitchens, big rooms, radiant heat and sunrooms
| Situation | What the guides say |
|---|---|
| Cabinets and islands | Install fixtures first and float the floor around them. COREtec allows cabinets on top only if that area plus 2 ft beyond is glued down. |
| Large areas | COREtec: 1/4 in gap under 2,500 sq ft, 1/2 in above. Karndean: 3/16 in minimum, 5/16 in over 1,000 sq ft, and an expansion joint where a run passes 50 ft. |
| Radiant floor heat | Surface no hotter than 85°F. COREtec: run the system 2 weeks before, drop to 65°F for 3 days, then raise it 5°F at a time. |
| Sunrooms, big glass doors | Karndean: at least 3/8 in gap. Both warn that long direct sun can fade the floor and make it expand. |
| Stairs | Not floated. Treads are glued, with matching stair nose; this is the one place Karndean allows adhesive. |
What it costs: DIY vs. hiring out
Take a 14 x 12 living room and a 12 x 10 bedroom, 288 sq ft in all, in vinyl plank at $3.00 per sq ft with a pad attached. These are the defaults in our flooring calculator, priced in October 2026.
| Item | Quantity | Cost |
|---|---|---|
| Vinyl plank, 10% extra | 16 boxes (320 sq ft) | $960 |
| Underlayment | Pad attached | $0 |
| Shoe molding, 8 ft pieces | 13 | $117 |
| Transition strips and install kit | 2 + 1 | $70 |
| DIY materials | $1,147 | |
| Pro labor at $1.50 to $4.00 per sq ft | 288 sq ft | +$432 to $1,152 |
Labor costs about as much as the material here, which is why so many people do it themselves. Not in the table: carpet removal, leveling compound, a jamb saw and disposal. Stairs and heavy leveling are where pro quotes climb fastest. Still deciding between vinyl and laminate? Our laminate vs. vinyl plank guide compares them room by room.
Common mistakes
- Skipping the flatness check. Rigid core bridges small flaws, not dips. A dip under a joint will click, flex and eventually break the lock.
- Pinning the floor. Trim nailed through the planks, a toilet flange bolted tight, or an island set on top all stop the floor from moving, and it buckles somewhere else.
- Hammering the locking edge. Always use the tapping block or the pull bar. A crushed tongue won't hold.
When to hire a pro
Call an installer for large-area leveling, a slab over the moisture limit, stairs, radiant heat, or long runs that must line up through several rooms. In a bathroom remodel, the flooring is often the easy part; if the toilet flange, subfloor or tub are being changed too, see our bathroom remodel cost calculator for the full budget. Whoever does the work, ask whether they follow the maker's guide for gaps, flatness and moisture, because that's what the warranty checks if something fails.
Common questions
Do you have to acclimate vinyl plank flooring?
Many rigid-core products do not require it if the planks are already at normal room temperature. One major maker says acclimation is not required as long as the room is climate controlled between 55°F and 85°F. Another says it is needed if the boxes were exposed to extreme heat or cold. If the boxes sat in a cold truck or a hot garage, lay them flat in the room for about 48 hours first.
Can you install vinyl plank flooring over ceramic tile?
Usually yes, if the tile is firmly bonded, flat and has no cracked or loose pieces. One rigid-core guide allows grout joints up to 1/4 inch wide; wider joints must be filled with a cementitious patch so they don't show through. Check the height at doors and appliances, since the new floor sits on top of the tile.
How far apart should vinyl plank end joints be?
At least 8 inches (200 mm) between end joints in neighboring rows, according to two major rigid-core install guides. Vary the offset from row to row so the joints don't form a stair-step or H pattern. For tile-look planks, use a brick pattern offset by a third to a half.
Do you have to remove baseboards to install vinyl plank flooring?
It gives the best result, because the expansion gap hides under the baseboard. You can leave the baseboard in place and cover the gap with new shoe molding or quarter round instead. Either way, nail the trim to the wall, not through the floor, so the planks can still move.
Can kitchen cabinets go on top of vinyl plank flooring?
Not on a floating floor, as a rule. Cabinets and islands pin the floor in place, and it can buckle or separate elsewhere. Install cabinets first and floor up to them. One maker allows cabinets on top only if that area, plus 2 feet beyond, is glued down to the subfloor.
Which direction should vinyl plank flooring run?
Usually parallel to the longest wall or toward the main source of light, and in the same direction through connected rooms so you avoid extra transitions in doorways. In a narrow hallway, running planks the long way makes the space look longer.
Sources
Install rules come from the two guides below and differ between products; your floor's own guide is the one that counts. Prices are US figures checked in October 2026 and vary by region and store.
- Shaw COREtec, Resilient Installation Guidelines for SPC Products, revision 03/18/2021 (acclimation, flatness, gaps, moisture, existing floors, cabinets, radiant heat, stagger, wet areas)
- Karndean, Rigid Core Plank and Tile Installation Guidelines, January 2024 (acclimation, flatness, gaps, stagger, sealant, sunrooms, stairs, locking steps)
- Resilient Floor Covering Institute, Recommended Work Practices for Removal of Resilient Floor Coverings (referenced in the COREtec guide for asbestos-containing floors)
- HomeAdvisor, flooring installation cost and Flooring Clarity, flooring cost guide (labor $1.50–$4 per sq ft for vinyl plank)
- Cost example: HomeOutlay flooring calculator defaults (vinyl plank $3.00 per sq ft, 20 sq ft boxes, shoe molding $9 per 8 ft piece, transitions $25, install kit $20), October 2026