Cut around the vent while the planks are still loose. Set the vent frame or register at the duct opening, mark each board against it, and make the cut at the saw, not on the floor. Measure from the frame you're installing, not from the old register, and cut a little small first, since you can always take off more.
Why the cut around a vent matters
A floor vent is one of the few places in a room where the flooring has to stop in the middle of the floor. The edges of that cut are right where people look and step, so chips, gaps and wavy lines show. A drop-in register hides a rough cut under its lip. A flush vent sits level with the floor, so the cut needs to be cleaner.
The easiest way to get a clean cut is to do it before the board is part of the floor. That's why we suggest having your vents on site on install day, as covered in when to order floor vents before your flooring install.
Tools for cutting LVP and LVT
Rigid-core vinyl plank and tile cut easily. Most straight cuts are a score-and-snap job, and the notch around a vent takes a jigsaw or an oscillating tool.
- Utility knife and square
- Oscillating multi-tool
- Jigsaw with a fine blade
- Fine-tip marker or pencil
- Painter's tape
- Shop vacuum
Tools for cutting hardwood
Solid and engineered hardwood need a saw for every cut. Fine-tooth blades and taped faces keep the top layer from splintering, which matters more on engineered boards where the wear layer is thin.
- Jigsaw or oscillating tool
- Drill for corner holes
- Circular or track saw (retrofit)
- Fine-tooth blades
- Painter's tape
- Dust mask and glasses
How to cut flooring around a vent, step by step
These steps work for LVP, LVT and hardwood during a new install. If your floor is already down, see the retrofit notes below.
- Cover the duct before you startLay a piece of cardboard or tape over the duct opening so dust, offcuts and the odd screw don't end up in your ductwork. Pull the old register first if it's still there.
- Set the frame where it will livePlace the vent frame or register in the duct opening and check that it sits flat and at the finished floor height. That piece, not a tape measure reading of the old register, is what your boards have to fit.
- Dry-fit the plank and mark itLock or lay the board in its row, slide it up against the frame, and mark both sides of the opening on the face. Then mark the depth from the edge of the neighboring board. Two marks per side beats one.
- Tape the face and cut inside the linePut painter's tape over the cut area to cut down on chipping and make your marks easier to see. Cut on the waste side of the line, slightly small, so the first test fit is snug rather than loose.
- Clean up the cornersFinish inside corners with an oscillating tool, or drill a small hole at each corner of a hardwood notch first so the jigsaw can turn without splitting the board.
- Test fit, trim, then lock it inFit the board around the frame. If it binds, shave the edge a little at a time. Once it fits, lock or fasten the plank the way your floor is meant to be installed, then pull the duct cover and drop in the vent.
Wear safety glasses for every cut, and a dust mask when you cut hardwood or use a saw on vinyl. Cutting outside or in a garage keeps most of the dust out of the house.
New install vs retrofit
During a new install
- What you cut
- Loose planks, one at a time, at the saw.
- Tools
- Utility knife, jigsaw or oscillating tool.
- If a cut is off
- Recut or grab another plank from the box.
- Result
- Tight, clean edges with almost no risk to the rest of the floor.
Retrofit in a finished floor
- What you cut
- An opening in a floor that's already locked together or nailed down.
- Tools
- Oscillating tool or a plunge-cut circular or track saw, plus a drill for corners.
- If a cut is off
- The mistake is in the finished floor, so take it slow.
- Result
- Doable with care. Use the frame as a template and keep the cut inside your lines.
For a retrofit, check what's under the floor before you plunge a saw. Look from the basement or crawlspace if you can, and set the blade depth to the flooring thickness so you don't cut into the subfloor more than you need to. On click-lock LVP, read flush floor vents on floating LVP floors first, since a floating floor has its own rules.
Common mistakes
Measuring the old register
The old register's face is bigger than the hole. Order by the duct opening and cut to the new frame.
Cutting the face the wrong way up
A jigsaw cuts on the upstroke, so it chips the side facing up. With a jigsaw, cut with the face down or tape it heavily.
Leaving a thin sliver
A narrow strip of plank beside the opening can snap or flex. If the layout leaves one, shift the row or use a wider piece.
Cutting through the locking edge
Notching too far into a click-lock tongue or groove weakens the joint next to the vent. Keep the notch to what the frame needs.
Pinning a floating floor
Don't screw or nail floating LVP to the vent frame or subfloor. The floor still needs to move toward the wall gaps.
Skipping the duct cover
Sawdust and offcuts that fall in the duct get blown around the house the first time the system runs.
Where matching flush vents fit in
Vents.com builds flush vents from a piece of your own LVP, LVT or hardwood, so the vent matches the floor around it. Each vent sits in a frame set into the duct opening, level with the finished floor, and your installer cuts the boards to that frame the same way they work around a door jamb. Order by the duct opening size, and have the vents in the room before the crew reaches the first opening.
Still choosing a floor? Our partner store Floor City carries vinyl plank flooring and hardwood flooring so you can plan the floor and the vents together. Questions about a specific opening are welcome through our contact page.
Frequently asked questions
What's the best tool for cutting LVP around a floor vent?
For straight cuts, a utility knife and square: score the face and snap the board. For the notch around the vent, a jigsaw with a fine blade or an oscillating multi-tool. An oscillating tool gives the cleanest inside corners.
How do I cut hardwood around a floor register without splitting it?
Tape the face, drill a small hole at each inside corner, then connect the holes with a jigsaw or oscillating tool. Use a fine-tooth blade and let the saw do the work instead of forcing it.
Should the hole match the duct or the vent?
Cut the flooring to fit the frame or register you're installing, not the bare duct. Order the vent itself by the duct opening size.
Can I cut a vent opening in a floor that's already installed?
Yes. It's a retrofit, so plan for more care. Mark the opening from the frame, cut just inside the lines with an oscillating tool or plunge saw, and check below the floor for joists, wires and pipes before you plunge.
Do I leave an expansion gap around a floor vent?
Follow your flooring manufacturer's install guide. On a floating floor, the key is not to fasten the planks to the vent frame or subfloor so the floor can still move toward the wall gaps.
What sizes do Vents.com flush vents come in?
Flush floor vents in 2x10, 2x12, 2x14, 4x10, 4x12, 4x14, 6x10, 6x12 and 6x14 inches, and matching cold air returns in 6x20, 6x24, 6x30, 6x36, 8x20, 8x24, 8x30 and 8x36 inches.
Related guides
- When to order vents before your installWhen to measure, set a plank aside and order so vents arrive on time.
- Flush vents on floating LVP floorsHow a flush vent fits around the duct without pinning a floating floor.
- Floor vents for hardwood floorsFlush vents made from your own hardwood, so grain and finish match.
- Floor vent sizes and how to measureA size chart, how to measure the duct opening, and the sizes we build most.
- How to remove a floor vent coverLift out an old register without scratching the floor, then measure the opening.
- Matching cold air return coversEgg-crate returns made from your LVP, LVT or hardwood, in all 8 sizes.