How to Keep a Sectional From Separating (No More Gaps)

To keep a sectional from separating, join the pieces to each other first: use the connectors it came with, strap the nearest legs at each seam, or add brackets if small screws are OK. Then stop the joined sectional sliding on the floor, so the seams aren’t taking all the strain.

The gap opens because a sectional is really two or more sofas parked side by side, each on its own legs. Every time someone sits down or gets up, the piece they’re on can shift a little, and nothing pulls it back. Over weeks, those small moves add up to a gap.

Read the gap first

As a rule of thumb, where and how the gap opens points to the fix to start with.

What you see	What’s usually going on	Start with
An even gap along the whole seam	The pieces aren’t joined, or a connector has come unhooked	The connectors your sectional came with
A V-shaped gap that opens at the front	The pieces swing apart as people sit and stand	A connector or strap near the front legs
A V-shaped gap that opens at the back	The pieces get pushed back when people lean or sit down hard	A strap or bracket at the back legs
The chaise or an end piece wanders off	That piece takes the most pushing and has little holding it	Join it, then add grippers under its outer legs
Seams stay closed, but the whole sectional moves	A floor grip problem, not a connection problem	Grippers or a rug under the front legs
Connectors are on, but the gap still opens	Loose hardware, a bent bracket, or an uneven floor	Tighten, replace, or level (see below)

Find and fit the connectors it came with

Many sectionals come with connecting hardware, and it’s easy to miss. Some designs hide brackets under the frame, and others ship the connectors as loose parts. Before you buy anything, check:

• Under the frame where the pieces meet. With a helper, tip each piece carefully and look along the bottom edge for brackets, slots, or pre-drilled holes.
• The packaging and cushion zippers for small bags of hardware.
• The assembly instructions. If you’ve lost them, search the maker’s site for your model number.

La-Z-Boy’s sectional assembly instructions describe one hidden design: pivoting lock brackets under one side of a unit and connecting posts under the side that meets it. If yours is a different brand, follow its own instructions, but La-Z-Boy’s steps show how this kind of connector works:

1. Leave about 12 in between the pieces you’re connecting.
2. Swing each pivoting bracket out from under the frame. La-Z-Boy says it must sit perpendicular to the edge of the unit to engage the posts. A bracket left folded underneath can’t hold anything, so check this first if your connectors “don’t work.”
3. Line up the posts with the brackets and push the pieces together.

Castlery describes other types: metal clips that slide and lock, hidden brackets that interlock when you push the pieces together, and screws or bolts that fix the sections in place. If parts are missing, contact the maker or retailer with the model number and ask about replacements.

If the connectors won’t line up, Castlery says it’s often because the sections aren’t aligned perfectly or the floor isn’t level, and that a small lift or tilt usually solves it. Make the front edges flush, then check whether either piece rocks, since a rocking piece can hold its connector at the wrong height. Bona’s floor-care guide adds that furniture that isn’t level can scratch or gouge a wood finish, so leveling helps the floor too.

No connectors? Strap the legs together

If you can’t or don’t want to put screws in the frame, join the two nearest legs at each seam:

1. Push the pieces together so the seam closes.
2. Wrap a reusable hook-and-loop strap, or a heavy-duty cable tie, around the two nearest legs. Back legs hide it best. Add a second at the front if the gap opens there.
3. On finished wood legs, slip a scrap of felt between the strap and the leg so it doesn’t rub the finish.
4. Pull it snug. With a cable tie, trim the tail flush so there’s no sharp end where feet go.

Hook-and-loop straps reopen when you want to move the sofa. Cable ties have to be cut and replaced. A strap holds the seam closed, but it doesn’t stop the whole sectional sliding, so pair it with grippers if that’s happening too. Straps don’t suit seams where the legs are far apart or hidden under a skirt. Brackets are the better option there.

Add connector brackets if screws are OK

Most universal connector brackets screw into the underside of each piece’s frame and hook together. When small screws are acceptable, they’re the most permanent fix here.

1. Plan at least one set per seam. A three-piece sectional has two seams, so it needs at least two sets.
2. Line the pieces up exactly where you want them, fronts flush and seam closed, before you mark anything.
3. Find solid wood. With a helper, lay each piece on its back or side on a blanket. Mark bracket positions on the solid frame rails, not on the fabric dust cover or thin panels.
4. Drill pilot holes if the bracket instructions call for them, and use the screws they specify. Check the screw length against the rail’s thickness so the tips can’t come through the other side.
5. Hook the brackets together and test. Sit at the seam and in the end seat, getting up and sitting down a few times, and watch for any gap.
6. Recheck regularly. Article’s assembly instructions for its Callais sectional say hardware may loosen over time and to check the bolts regularly and tighten them if needed. It makes sense to do the same with add-on brackets.

Buying criteria

Choosing sectional connector brackets

• Compatibility with your frame or leg layout
• Included screws sized for furniture frames

• Brackets that require drilling through visible surfaces

We haven’t verified specific products here yet, so we list criteria instead of guessing.

Search Amazon for “sectional couch connector brackets” (opens in a new tab; affiliate link)

Search results aren’t vetted by us, so check each listing against the criteria above. As an Amazon Associate I earn from qualifying purchases.

Stop the whole sectional from sliding

Joining the pieces closes the gap, but if the joined sectional still slides as people sit, the seams take extra strain. Add grip under the outer legs:

• Use grippers, not felt. The National Wood Flooring Association recommends felt pads under furniture legs to prevent scratches and dents, but felt is made to glide. For a sectional that moves, use non-slip grippers. As a rule of thumb, pick ones at least as wide as each leg (how to size grippers for a sofa). Bona notes that in a family room, where people plop down on the sofa, a rubber pad can help restrict movement, though it also warns that rubber can leave scuff marks. Try a gripper on a hidden spot first and follow your floor maker’s care guide.
• Check first on vinyl. Armstrong Flooring doesn’t recommend rubber- or latex-backed mats on its vinyl floors because a chemical in the backing can permanently stain them. Read our guide to rug pads for vinyl plank and your floor maker’s care guide before putting rubber under anything.
• Set the front legs on a rug. Castlery points out that a properly sized rug anchors all the pieces. As a rule of thumb, choose one big enough for the front legs of every section, with a pad suited to your floor. If the rug itself creeps, see how to stop a rug sliding on hardwood.
• Put the heavy pieces at anchor points. Castlery suggests placing heavier sections, like the chaise or corner piece, at anchor points, with lighter sections between them. If the layout allows, a wall behind the sectional also stops it sliding backward.
• On carpet, rely on the connection. Bona’s guide suggests felt and rubber pads for hard floors and harder materials for carpet, so on carpet the connectors or straps do most of the work.

Disconnect before you move it

La-Z-Boy’s instructions say not to move sectional units while they’re connected, because the connecting brackets are meant to keep units from separating, not to support connected units being moved. When you clean behind the sofa or rearrange the room:

• Unhook or unstrap each seam first. On La-Z-Boy’s design, you lift the end of the unit with the posts up off the brackets.
• Lift each piece with a helper rather than dragging it across the floor.
• On recliners and sleepers, hold only the fixed frame. La-Z-Boy’s safety instructions say to grip non-moving parts only.
• Reconnect, then re-center any grippers that shifted.

When these fixes won’t hold

• The frame is cracked or loose. If screws won’t bite or a rail flexes when you push it, brackets will pull out. Contact the maker or a furniture repair shop.
• A factory bracket is bent or its screw holes are stripped. Ask the maker for replacement parts rather than forcing the old ones.
• The pieces came from different sets. Mismatched connectors and frame heights often don’t line up. Strap the legs and anchor everything on a rug instead.
• The frames stay together but the cushions drift. That’s a cushion problem, not a connection problem. See how to stop leather couch cushions from sliding.
• It’s new and the hardware is missing or won’t engage. Call the retailer before you modify anything.

Want a plan for your exact setup? Use the Fix Finder for a separating sectional, or browse more furniture fixes.