Flooring that performs beautifully in a dry inland house can cup, gap or delaminate in a home three streets from Long Island Sound. Humidity swings here are wide, and the right product depends more on the room than on the showroom sample.
Solid hardwood: beautiful, but it moves
Solid hardwood is still the best-looking and most refinishable floor you can install, and in an above-grade room with reasonably stable humidity it is hard to beat. It can be sanded and refinished several times over its life, which no engineered product can match.
The catch is dimensional movement. Solid wood expands and contracts with seasonal humidity, and in coastal homes that swing is larger. That means acclimating the material properly on site, leaving correct expansion gaps at every wall, and accepting some seasonal gapping in winter as normal rather than defective.
Engineered wood: the coastal compromise
Engineered flooring uses a real wood wear layer over a dimensionally stable plywood core. It looks identical to solid hardwood underfoot because the surface is the same material, but it moves far less with humidity.
For homes near the water, or over concrete slabs, or with radiant heat, engineered is usually the better engineering answer. Pay attention to the wear layer thickness — a thicker wear layer means the floor can be refinished at least once, which meaningfully extends its life.
- Look for a wear layer of 3mm or more if you want refinishing capability
- Engineered handles slab-on-grade and radiant heat far better than solid
- Plywood cores outperform HDF cores in humid conditions
Luxury vinyl plank: where water is a real risk
LVP has improved dramatically, and in genuinely wet-risk locations it is the correct choice: finished basements, mudrooms, laundry rooms, and rental properties where durability outranks authenticity.
It is fully waterproof, it handles sand and salt without complaint, and good products have convincing texture. It cannot be refinished, and it will not add the same resale appeal as real wood in a primary living space — so use it where its strengths actually matter.
The subfloor decides the outcome
Nearly every flooring failure we get called to inspect is a subfloor problem wearing a flooring problem's costume. Deflection between joists causes squeaks. An out-of-flat subfloor causes hollow spots and cracked seams. Moisture in a slab destroys adhesive.
Before any product goes down, the subfloor should be checked for flatness, tested for moisture where it is concrete, and refastened where it moves. It is unglamorous work and it is the single highest-value hour spent on the job.