Skip to Content
chevron-left chevron-right chevron-up chevron-right chevron-left arrow-back star phone quote checkbox-checked search wrench info shield play connection mobile coin-dollar spoon-knife ticket pushpin location gift fire feed bubbles home heart calendar price-tag credit-card clock envelop facebook instagram twitter youtube pinterest yelp google reddit linkedin envelope bbb pinterest homeadvisor angies

Large Beautiful house with wooden windows

Windows are an important and essential part of your home. They contribute to both aesthetics and functionality. They let in light and ventilation. They keep out the elements and offer protection. They also insulate your home against unwanted heat transfer. But over time you might notice your old wood windows not performing as they should. You might feel a significant temperature difference when you enter a room or notice a draft while sitting next to a closed window. What causes window leaks on wood windows? Here are some of the most common contributors:

Contact Us

Accidental Damage

A more apparent cause of leaky windows is broken glass from accidental damage. It may stem from a fallen branch, a rouge baseball, or another form of blunt force. The damage is immediate and usually noticeable. That said, some broken windows can go unnoticed for weeks, and all the while air and moisture travel in and out of the home freely. This is why it is important to inspect your windows as part of your cleaning routine. And if you notice broken glass you should get the window repaired or replaced as soon as possible.

Improper Installation

When it comes to wood window installation, precision is key. This is not a project you want to try and DIY or leave to any old contractor. Window professionals get the direct training from the manufacturer on how to install their products. It takes knowledge, skill, and specialized tools to get the job done right. One misstep or mismeasurement could result in leaks and premature window failure.

Poor Maintenance

Wood windows, especially old wood windows, require more maintenance than other window materials. To keep them in top shape you should sand and refinish the natural wood every few years. This will help prolong the life of windows

High Moisture Levels and Water Damage

Water and wood windows do not react well together. If it leaks into the assembly water can freeze, expand, and create even larger gaps. Some pooling water or discoloration around the frame may not seem like much at first, but if a water leak is left too long it could cause damage to the structure of your home.

Pests and Insects

Rodents and bugs are small creatures capable of extensive damage. They can bite, gnaw, claw, and scratch their way inside your home leaving large holes and gaps in their wake.


Last, but not least, wood windows wear out over time. With prolonged use, the materials will start to break down and wear out. This is why it is so important to maintain your wood windows. Otherwise, they will start to develop drafts and leaks.

If you discover leaks in your old wood windows you can try to seal up the gaps with caulk, insulation, or wood filler. But if damage to wood windows is more extensive, repairs will only get you so far. If you want to replace your wood windows contact Home Supply Window & Door. You can reach us at 973-949-5401 or visit 160 Van Winkle Ave, Hawthorne, NJ 07506.