Humidity Control: Taking care of your wood cabinetry

Regulating humidity in your home is essential to taking care of your wood surfaces. Wood is hygroscopic, meaning it takes on moisture and expands, and releases moisture and shrinks. Taking ambient humidity readings and visual inspection of your space for indicators of high or low humidity is an important part of the estimate walkthrough.
Use a hygrometer
Often, smart thermostats have built-in hygrometers to measure relative humidity of your home, or there are independent units that are reasonably priced ($50 or less) at your local hardware store. Aim to keep the humidity in your home between 30%-50% with the help of a humidifier or dehumidifier. At Craine Painting, we will often leave a small hygrometer at your home for the duration of work so we can match home humidity levels and to help us estimate dry time.
Use a dehumidifier in damp areas
Dehumidifiers take moisture out of the air, just don’t forget to drain/empty excess water regularly! In Wisconsin and Northern Illinois, a dehumidifier is useful during rainy seasons (March-August).
Signs of high humidity:
- Swollen door frames that make it difficult to shut your door
- Cabinet doors that used to lay flush are now rubbing/bumping the frame
- Condensation on windows
- Increased mold in damp spaces
- Increased insect activity: earwigs, centipedes, and silverfish
Use a humidifier in the fall and winter
A whole-house humidifier, added onto your HVAC system, is the easiest way to maintain humidity regulation in the dryer months. Stand alone room units can increase humidity levels, but you should check the square footage of your home and use the correct number of units to achieve 30-50% humidity.
Signs of low humidity:
- Cracks or splits in your solid wood cabinetry and furniture.
- Needing to water plants more frequently.
- Complaints of dry skin, mouth, and nose
During our initial walkthrough of your home, we will inspect the area for signs of high and low humidity.

A special note about caulking:
Since the midwest has a large humidity range, we don’t use caulk in our cabinet refinishing process. On 5 panel doors, the center panel is meant to float so that it can expand and contract with seasonal changes.
A professional-grade finish can reduce moisture gain and loss, but wood fibers will expand and contract with humidity changes. Be sure to check your home’s humidity levels frequently and make adjustments via humidifiers and dehumidifiers in order to take the best care of your cabinets.
Need a professional painter for your home project? Craine Painting is a local, family-owned business with over a decade of experience in the Lake Geneva area.





















