Hardwood floors are known for their beauty, warmth and ability to elevate nearly any room. But if you’ve lived in Colorado for a while, you already know the weather can be dramatic. Dry winters, cold air and sudden temperature swings create the perfect recipe for something many homeowners notice around December: small gaps between hardwood planks.
These gaps are completely normal — and understanding why they happen can help you protect your floors long-term. At Diverse Flooring, we hear this question every winter, so this guide walks through the “why,” the “how,” and the “what to do next.”
What Causes Seasonal Gaps in Hardwood?
Hardwood is a natural, living material. Even after it becomes flooring, each plank continues to respond to environmental changes. When the air inside your home gets dry — especially common during Colorado’s winter months — your flooring releases moisture and contracts. That contraction creates the narrow gaps you see between boards.
Key factors that trigger seasonal gaps include:
Dry furnace heat running throughout winter
Low indoor humidity (often below 30%)
Cold, dry mountain air coming in from outside
Sudden shifts in temperature between day and night
These changes are part of Colorado living and don’t mean there’s anything wrong with your hardwood. In most cases, the planks expand again once humidity rises in spring.
If you’re exploring long-lasting options, remember that something like hardwood flooring naturally adapts to seasonal shifts thanks to its organic structure.
Why Colorado Homes Experience More Noticeable Gaps
Colorado’s climate is unique, and hardwood floors feel the impact more here than in many other regions. Winters in areas like Colorado Springs, Monument, Black Forest and Woodland Park are extremely dry — both indoors and outdoors.
Here’s why gaps feel more pronounced:
1. High Elevation = Drier Air
At higher altitudes, humidity levels naturally drop. The lower the humidity, the more moisture hardwood releases.
2. Heating Systems Run Longer
Cold snaps mean furnaces run constantly, removing even more moisture from the air. The drier the indoor environment, the more hardwood contracts.
3. Wide Temperature Swings
Colorado is known for going from sunny afternoons to freezing nights. Hardwood expands and contracts with temperature changes, which increases movement between planks.
4. New Builds Dry Out Faster
Modern, tightly sealed homes trap dry air inside. Good for energy efficiency — not so great for hardwood stability.
How to Tell If Your Hardwood Gaps Are Normal
Not every gap is a cause for concern. Some movement is expected, but here’s how to know it’s simply seasonal:
Gaps appear in winter and shrink in summer
Openings are narrow and consistent
No planks feel loose or squeaky
You don’t see splintering edges
Seasonal gaps are cosmetic and temporary. However, gaps that remain year-round may be signs of low humidity levels or installation issues. A flooring specialist can pinpoint the difference.
How Moisture and Humidity Impact Hardwood Year-Round
Humidity is the number one factor that determines how stable your hardwood floor stays. Here’s how moisture affects hardwood during different seasons:
Winter: Hardwood Shrinks
Low humidity causes boards to contract
Small cracks appear between planks
Air feels dry, which accelerates shrinkage
Spring & Summer: Hardwood Expands
Rain and warmer weather increase humidity
Boards draw moisture from the air
Gaps tighten up and become less noticeable
Fall: Transition Season
Floors adapt to cooler nights
Humidity begins to drop
Early signs of seasonal separation may appear
Your hardwood is constantly breathing with the seasons — and that’s a sign of quality, not damage.
Ways to Reduce Hardwood Gapping in Winter
You can’t control Colorado’s weather, but you can control your indoor environment. These steps make a big difference:
Use a Humidifier
Aim for indoor humidity between 35–55%. Whole-home humidifiers work best, but portable units help too.
Avoid Overheating Your Home
Extremely high furnace temperatures dry out your flooring faster.
Add Area Rugs in Key Spaces
This helps protect hardwood from excessive cold or dry airflow.
Seal Windows and Doors
Cold drafts increase temperature swings and cause faster contraction.
Maintain Consistent Indoor Temperature
Big temperature jumps stress the wood. Gradual, steady heating is ideal.
When Seasonal Gaps Become a Problem
While most gaps are harmless, here are signs it’s time to call a pro:
Gaps wider than a dime
Cracks that remain open through summer
Boards shifting or lifting at the edges
Noise or movement when walking across affected areas
Visible splintering or cupping
An expert can evaluate whether the issue is seasonal or structural — and recommend the right fix.
Best Flooring Choices for Colorado’s Dry Climate
Hardwood remains a timeless favourite, but some species and constructions handle Colorado’s climate better than others.
Engineered Hardwood
More stable than solid hardwood
Built to handle moisture changes
Ideal for high-elevation climates
Hardwood Species That Perform Well:
Oak
Hickory
Maple
These woods tend to stay more stable throughout humidity changes.
If you’re planning a renovation, a flooring expert can recommend the most climate-friendly hardwood styles for your home.
How Seasonal Gapping Affects Resale Value
The good news: seasonal gaps almost never impact home value. In fact, many buyers in Colorado already expect them. What matters most is:
Overall condition of the hardwood
Professional installation
Proper maintenance history
Long-term stability of the floor
Realtors often reassure buyers that winter gaps are part of natural hardwood behaviour — similar to how windows or doors may shift slightly seasonally.
Preventing Issues With Newly Installed Hardwood
New installations can be more vulnerable to seasonal movement. These steps help protect your investment:
Acclimate the Wood Properly
Hardwood must sit inside the home for several days before installation.
Keep Construction Humidity Under Control
New builds or heavy renovations create extremely dry air.
Choose Experienced Installers
Proper spacing during installation prevents long-term cracking.
Maintain Post-Installation Humidity Levels
Running a humidifier from day one helps your new floor settle without stress.
Should You Fill Seasonal Gaps?
Most experts recommend not filling seasonal gaps unless they remain open year-round. Here’s why:
Fillers may crack when the floor expands in summer
Seasonal gaps are temporary, so filling them is unnecessary
You may cause uneven expansion during warmer months
If gaps remain open all year, a flooring professional may fill them or suggest another repair method.
When It's Time to Call a Flooring Specialist
You don’t need a professional for every small gap, but expertise is valuable when:
Gaps are continuing to get wider
you see movement or lifting
The gaps create drafts or trap debris
The problem persists through seasonal changes
Specialists can assess moisture levels, inspect installation quality and guide you on long-term care. If you’d like personalised help, feel free to get in touch with a flooring expert for guidance.
