
Cupping, Crowning and Buckling in Hardwood
Cupping is when board edges rise above their centers, crowning is the reverse, and buckling is a floor lifting off the subfloor entirely. Each one points to moisture moving through the wood, usually from below or from a leak. We find and measure the source before flattening anything, because sanding a cupped floor while it is still wet leaves it crowned once it dries.
Gaps Opening Between Hardwood Boards
Small seasonal gaps are normal in solid hardwood as it gives up moisture in dry months, and they often close again. Gaps that keep widening, or that show up in only one room, usually mean a moisture change, a missing expansion gap or a failing subfloor. We tell you which kind you have before recommending filler, board replacement or nothing at all.
Squeaks, Hollow Spots and Nail Pops
Squeaks come from boards rubbing on loose nails or on each other, and a hollow sound underfoot often means a glue-down floor has let go or a floating floor sits over a dip. Nail pops can usually be reset from above. We find where the movement starts and fasten or re-bond the floor there, so the fix outlasts the next few weeks.
Soft Spots and a Sagging Floor
A floor that gives underfoot is rarely a hardwood problem. It is usually a damaged subfloor, a sagging joist or rot from an old leak on a raised foundation. We open the area, check the framing and repair or sister the joist where needed, because new hardwood laid over a soft spot only hides it for a while.
Water From a Leak, Water Heater, Washer or Dishwasher
Water from a supply line, a water heater, a washer or a dishwasher travels under the boards farther than it shows on the surface. We map the wet area with a wood moisture meter, pull only what has to go and dry the rest in place. Acting in the first days is what keeps a board repair from turning into a whole-room replacement.
Warm Floor or Wet Boards Over a Slab Leak
A warm patch or damp boards over a concrete slab with no visible source often mean a slab leak in a hot or cold water line. That is a plumber’s repair first, whether a spot fix or a repipe of old galvanized pipe. Once the line is fixed, we dry, test and rebuild the part of the floor that had to come up.
Termite Swarmers, Frass and Holes in the Boards
Winged termite swarmers, small piles of pellets called termite frass and pinholes in the boards point to drywood termites, while mud tubes point to subterranean termites and fine powder can mean powderpost beetle. Treatment belongs to a pest control company. We replace the damaged boards afterward and weave them into the surrounding floor.
Pet Urine Stains in the Wood
Pet urine that sits on a hardwood floor soaks past the finish and turns the wood dark gray or black. Sanding rarely lifts those stains once they reach deep into the grain. We cut out the affected boards and weave in replacements, then refinish the area so the repair blends into the rest of the room.
White Water Rings, Dents and Deep Scratches
White water rings usually sit in the finish rather than the wood and can often be fixed with a recoat. Dents and scratches through the finish into bare wood need spot sanding or, for deep damage, a board replacement. We tell you which fix fits before you pay for a full sanding the floor may not need.
Peeling, Milky or Tacky Polyurethane
Peeling polyurethane often means a coat went on over wax or a contaminated surface, a milky finish points to trapped moisture, and tacky polyurethane to a product that never cured. Wear through to bare wood in traffic lanes is ordinary age. Each calls for a different fix, from a screen and recoat to a full sand back to raw wood.