Luxury vinyl plank is the most popular flooring we install in DMV homes and rentals. It's waterproof and tough, but it isn't immune to gaps. When planks start separating at the short ends or along the long seams, there's always a reason, and fixing the plank without fixing the reason means the gap comes back.
THE USUAL CAUSES
| Cause | Telltale Sign |
|---|---|
| Temperature swings | Gaps appear in winter or in a vacant home with HVAC off; sunny rooms worst |
| Floating floor pinned down | Gaps near kitchen islands, heavy cabinets or trim nailed through the floor |
| No expansion gap at walls | Peaking or buckling in summer, then gaps elsewhere |
| Uneven subfloor | Planks flex or click when stepped on; seams open in one area |
| Damaged locking edges | One seam keeps opening no matter what |
| Planks not acclimated | Gaps across the whole floor within months of install |
HOW EACH IS FIXED
- Small end gaps: a plank gap-fixer tool pulls planks back together with a suction grip. Works if the locking edges are intact.
- Pinned floor: trim or cabinet fasteners going through the floor are removed and the floor gets room to move. Rigid core LVP over large areas also needs transition strips at doorways.
- Uneven subfloor: the affected area is lifted, the subfloor is leveled (most products want no more than about 3/16 inch variation over 10 feet), and planks are reinstalled. See subfloor repair cost.
- Broken locks: planks are replaced. Keep the leftover box from your install for this.
RENTALS AND VACANT HOMES
A vacant unit with the heat off for a DMV winter is a common cause. Manufacturers typically want the indoor temperature kept within a set range year-round. Between tenants, set the thermostat to a moderate temperature, not off.
WHAT IT COSTS
| Repair | Typical DMV Cost |
|---|---|
| Close gaps in one room | $150 – $350 |
| Replace a few damaged planks | $200 – $500 |
| Lift, level subfloor and reinstall a room | $800 – $2,000 |
Gluing seams shut is a common quick fix, but it turns a floating floor into a pinned one, and the gaps usually reappear nearby. Fix the cause instead.
RELATED READING
CAN YOU INSTALL VINYL PLANK OVER TILE?
When it works, when it doesn't, and how grout lines and floor height change the answer.
SUBFLOOR REPAIR COST: SOFT SPOTS & ROT
Warning signs, 2026 repair costs, and why it has to happen before any new flooring goes down.
BEST FLOORING OPTIONS FOR DMV HOMES: A PRACTICAL COMPARISON
LVP, engineered hardwood, solid hardwood, tile, carpet — what each is actually good for in the DMV climate and housing market.
Planning a project? See our Flooring Installation service page for scope, process and recent work.
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