Double-hung windows are a popular choice for homeowners due to their versatility, energy efficiency, and ease of use. However, like any window style, they can develop drafts and air leaks over time. These issues can lead to higher energy bills, uneven indoor temperatures, and reduced comfort in your home.
The good news is that with regular maintenance and simple fixes, you can eliminate drafts, restore efficiency, and extend the lifespan of your double-hung windows.
At Longhorn Windows, we specialize in high-quality window replacements and repairs to help homeowners maintain comfort and energy efficiency. Let’s explore how to identify, prevent, and fix drafts in double-hung windows so you can enjoy a well-insulated home year-round.
Why Do Double-Hung Windows Develop Drafts?
Over time, window seals and frames naturally wear down due to weather exposure, temperature changes, and everyday use. Some of the most common reasons double-hung windows develop drafts include:
Worn or damaged weatherstripping that creates gaps allowing air to enter
Poorly sealed window frames due to old caulking that has cracked or peeled
Misaligned sashes that do not close properly, creating small openings for air leaks
Aging window materials like wood or aluminum that have warped or shrunk over time
While some air leakage is expected as windows age, addressing these issues early can prevent costly energy loss and keep your home comfortable.
How to Identify Drafts in Your Double-Hung Windows
Before fixing a draft, it’s important to determine where the leak is coming from. Some simple tests to check for air leaks include:
Holding a lit candle or incense stick near the window edges on a windy day to see if the flame flickers or the smoke moves
Running your hand around the window frame to feel for cold air entering
Placing a sheet of paper between the window sashes and closing the window to see if it pulls out easily
Monitoring your energy bill for sudden increases in heating or cooling costs that may indicate poor insulation
If your windows fail any of these tests, it’s time to seal the gaps and improve insulation.
Best Ways to Fix Drafty Double-Hung Windows
Replace Weatherstripping
One of the easiest and most effective ways to seal air leaks is by installing new weatherstripping. Over time, the original material can become brittle, compressed, or damaged, reducing its effectiveness.
Remove old weatherstripping from the sash edges.
Clean the area to remove dirt and adhesive residue.
Install new self-adhesive weatherstripping along the edges.
Close the window to ensure a tight seal.
This simple fix can significantly reduce drafts and improve insulation.
Re-Caulk Window Frames
Caulking creates an airtight seal around window edges, preventing air leaks between the frame and the wall.
Scrape away old, cracked caulk.
Clean the surface and let it dry.
Apply a fresh bead of high-quality silicone caulk along the frame.
Smooth the caulk with a tool or your finger to ensure even coverage.
This method helps block drafts and moisture while extending the life of your windows.
Adjust Window Sashes and Locks
If the top and bottom sashes are misaligned, small gaps can form, allowing air to pass through.
Make sure the window locks are fully engaged to pull both sashes tightly together
Check for debris or obstructions in the tracks and clean them out if necessary
Consider adjusting or replacing window locks if they no longer hold the sashes securely
A well-secured window will eliminate gaps and prevent unnecessary energy loss.
Install Window Insulation Film
For a quick and affordable fix, apply clear window insulation film during colder months.
Cut the film to fit the window size.
Use double-sided tape to attach it to the frame.
Apply heat with a hairdryer to shrink the film and create a tight seal.
This temporary solution reduces heat loss and improves insulation without permanent modifications.
When to Consider Window Replacement
If your double-hung windows are still drafty despite maintenance efforts, it might be time for a replacement. Some signs that it’s time to upgrade include:
Windows that are over 15 to 20 years old and show signs of wear
Ongoing issues with energy efficiency and high utility bills
Frames that are warped, cracked, or difficult to open and close
Excess condensation or fogging between glass panes
Modern double-hung windows come with advanced insulation, multi-pane glass, and reinforced frames that significantly improve energy efficiency. Upgrading to ENERGY STAR-rated windows can help reduce heating and cooling costs by up to 30 percent.
Professional Window Solutions from Longhorn Windows
At Longhorn Windows, we specialize in:
High-quality double-hung window replacements with advanced energy-saving features
Expert installation to ensure a perfect, draft-free fit
Custom window solutions tailored to your home’s style and climate needs
If you’re dealing with drafts and air leaks, our team can assess your windows and recommend the best repair or replacement options.
Schedule a Free Consultation Today
Don’t let drafty windows compromise your home’s comfort and energy efficiency. Whether you need simple repairs or a full window upgrade, Longhorn Windows is here to help.
Call us today for a free consultation, and let’s seal the deal on better insulation and energy savings.
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