The hardwood upstairs squeaks like crazy in winter — can that be fixed from below or do floors need to come up?

Most squeaky hardwood floors can be fixed from below without removing the flooring, especially if you have access to the subfloor from a basement or crawl space. Winter squeaking typically indicates seasonal movement where the wood has shrunk and loosened from the subfloor.

From below, a licensed contractor can identify loose areas by having someone walk on the floor above while they observe movement from underneath. The most effective fix involves driving screws up through the subfloor into the hardwood flooring, being careful not to penetrate the surface. This re-secures the flooring to the subfloor and eliminates the movement causing squeaks. Strategic placement of construction adhesive between joists and subfloor can also reduce movement.

In Ottawa's climate, winter squeaking is extremely common due to our dry indoor air during heating season. The wood shrinks and can pull away from fasteners or develop gaps that allow movement. Most experienced flooring contractors see this regularly in homes throughout the Ottawa Valley, particularly in older homes where the original installation may not have included proper subfloor preparation.

However, some situations require access from above. If the squeaking is due to loose tongue-and-groove joints between boards, or if the subfloor itself is damaged or improperly attached to joists, the flooring may need to come up in sections. A professional assessment can determine whether the issue is a simple fastening problem or something more complex requiring board replacement.

The best approach is having a flooring contractor evaluate the situation before winter ends, as the problem often diminishes when humidity returns in spring and the wood expands again. For a free assessment of your squeaky floors, request a consultation from Ottawa Floor Install to determine the most cost-effective repair method.