The box says waterproof. The basement smells damp. Both observations can be true at the same time.
Ask what the claim actually covers
Read the specific warranty and installation instructions. Establish what they say about substrate moisture, underlay, below-grade use, and water beneath the installation. The word on the box is not a complete description of the floor assembly.
Health Canada's moisture guide emphasizes addressing the moisture source. A surface that tolerates a spill does not establish that concealed dampness has been corrected.
Investigate before covering the evidence
Record when the dampness appears and whether it follows rain, humid weather, or plumbing use. Have visible water entry and suspect materials assessed. Ask the flooring installer which substrate tests and preparation their chosen product requires.
Keep the assembly compatible
TORLYS' floating-floor guidance illustrates why movement and fixed loads matter to an installation. Follow the actual product's rules for walls, cabinetry, transitions, and expansion; do not apply a laminate document as vinyl instructions.
- Confirm the flooring is approved for the intended below-grade application.
- Use the specified substrate preparation and moisture-control approach.
- Keep required movement space around fixed objects.
- Preserve access to floor services and maintenance covers.
Keep the flooring order flexible until the dampness and product requirements are understood. If you're wondering whether opening the windows will help, start with why summer air can make a basement wetter. It helps separate an airing habit from the water problem a new floor can't fix.