March 5, 2019 by Alexender Schoitiz
Understanding Wood Floor Gaps
Seasonal Changes and Solutions
Understanding Wood Floor Gaps: Seasonal Changes and Solutions
Hey floor enthusiasts! Jamie here with another deep dive into the world of hardwood flooring. After last week’s post about dust management, several of you reached out about a common issue: gaps appearing between floorboards. Let’s tackle this topic head-on.
First, let me share a recent project that perfectly illustrates this. I was called to a 1930s home where the owner was concerned about gaps appearing between boards during winter months. She was convinced her floor was failing – but what she was experiencing was actually completely natural!
Here’s the science behind it: wood is hygroscopic, meaning it absorbs and releases moisture based on environmental conditions. During summer months, when humidity is higher, wood expands. In winter, when our heating systems are running and the air is drier, wood contracts. This movement is normal and actually necessary for the floor’s long-term health.
However, not all gaps are created equal. Here’s what I look for when assessing whether gaps are normal or problematic:
Normal seasonal gaps:
- Appear uniformly across the floor
- Generally measure 1/16 inch or less
- Close up during humid months
- Don’t collect excessive debris
Problematic gaps:
- Appear randomly or in specific areas
- Measure more than 1/8 inch
- Stay constant year-round
- Show signs of board lifting or cupping
The most effective solution? Maintaining consistent indoor humidity levels. I recommend keeping your home between 35-55% relative humidity throughout the year. A whole-house humidifier can be a game-changer during heating seasons.
Pro tip: Never fill seasonal gaps with putty or filler! This prevents the natural expansion process and can lead to buckling when humidity rises. I’ve seen floors seriously damaged by well-meaning DIY repairs.
In cases where gaps are problematic (not seasonal), we have several professional solutions. Sometimes it’s as simple as board replacement, other times we might need to perform a “board tightening” procedure. Each case requires careful assessment to determine the best approach.
Recently, I worked on a floor where the gaps were caused by an improperly installed HVAC system that was blasting dry air directly onto the wood. Simply redirecting the airflow solved the issue within weeks. Sometimes the simplest solutions are the most effective!
Remember, if you’re concerned about gaps in your floor, document them over several seasons before assuming the worst. Take photos and measure the gaps during different times of the year. This information is invaluable for any professional you consult.
Got questions about gaps in your floors? Drop them below! And stay tuned for next week’s post where I’ll be discussing the truth about water-based vs. oil-based finishes.
Keep it smooth! Jamie
#WoodFlooring #FloorCare #SeasonalChanges #WoodworkingTips #HomeImprovement