how do you adjust double glazed windows for energy efficiency? Double glazed windows are an excellent choice for boosting energy efficiency and maintaining a comfortable home environment. However, over time, even the best windows may require adjustments to function optimally. Knowing how to adjust double glazed windows can help prevent draughts, reduce energy bills, and ensure smooth operation. This guide will walk you through essential tips for maintaining and adjusting your windows effectively.
Why Adjustment Matters
Properly adjusted double glazed windows are essential for:
- Energy Efficiency: Minimising heat loss during winter and keeping cool air inside during summer.
- Noise Reduction: Preventing gaps that allow sound to travel through.
- Smooth Operation: Avoiding stiff or misaligned windows that are hard to open or close.
How Do You Adjust Double Glazed Windows?: Tools You’ll Need
Before you start adjusting your double glazed windows, gather the following tools:
- A screwdriver (typically Phillips or flathead)
- Allen keys
- Lubricant spray (for smooth hinges)
- A spirit level (to check alignment)
How Do You Adjust Double Glazed Windows?: Step-by-Step Guide
1. Inspect the Hinges and Mechanisms
- Open and close the window to check for stiffness or misalignment.
- Look for visible gaps that may allow draughts.
2. Adjusting the Hinges
- Use an Allen key to tighten or loosen the hinge screws.
- Start with small adjustments and check the window’s fit after each tweak.
- For windows that sag, adjust the top hinge upward and the bottom hinge downward.
3. Check the Locking Mechanism
- If the window is difficult to lock, align the sash by loosening the screws around the locking mechanism and gently repositioning it.
- Tighten the screws once the window locks smoothly.
4. Align the Window Sash
- Misaligned sashes can let in cold air.
- Use a spirit level to ensure the sash is even.
- Adjust by tightening or loosening the relevant screws on the frame.
5. Seal Gaps
- Inspect the seals for wear and tear.
- Replace damaged seals or use weatherproofing strips for a tighter fit.
How Do You Adjust Double Glazed Windows?: Pro Tips for Maintenance
- Regular Cleaning: Remove dirt and debris from tracks and hinges.
- Lubrication: Apply a lubricant spray to hinges and locking mechanisms annually.
- Professional Inspection: Schedule regular checks with a glazing professional to ensure long-term performance.
The Impact of Poorly Adjusted Windows on Energy Efficiency
Even high-quality double glazed windows can underperform if they’re not properly adjusted. When windows don’t close flush against the frame or have small gaps due to hinge misalignment, they allow cold air to seep in and warm air to escape. This not only creates draughts but forces your heating system to work harder to maintain indoor temperatures. In summer, poorly sealed windows can let in unwanted heat, making cooling systems less effective. Over time, these inefficiencies can take a toll on your comfort and energy usage. Additionally, minor alignment issues can lead to extra strain on locks, hinges, and seals, shortening the window’s lifespan. Many homeowners assume they need new windows when a simple adjustment would restore full performance. At Cove Glass, we often find that correcting alignment, tightening mechanisms, or replacing a worn seal can make a huge difference. Keeping your windows properly adjusted is one of the easiest ways to maintain a cosy and energy-efficient home.
How Seasonal Changes Affect Window Performance
Many homeowners notice their windows behaving differently throughout the year. In the colder months, frames can contract slightly, leading to small gaps that weren’t present in summer. In warmer weather, the materials may expand, causing stiffness or difficulty closing the window fully. These changes are completely normal and happen more often with older frames or in homes exposed to extreme temperature shifts. Over time, these subtle movements can misalign the sash or strain the hinges. Adjusting your double glazed windows seasonally can help counteract these effects, ensuring a tighter seal year-round. It’s a good idea to check your windows at the start of each season — especially before winter — to ensure they’re functioning properly. Keeping an eye on draughts, hinge tension, and locking alignment can help maintain energy efficiency regardless of the weather. Regular seasonal adjustments are a quick and effective way to reduce heat loss and maintain a comfortable indoor environment.
Window Seals: Small Component, Big Impact
Window seals may seem like a minor part of your double glazed unit, but they play a crucial role in energy efficiency. These rubber or foam strips run along the edges of the frame and ensure the window forms a tight seal when closed. Over time, seals can become brittle, compressed, or damaged due to everyday use and weather exposure. Once the seal is compromised, warm air can escape and cold air can find its way in, reducing the overall performance of your windows. You might also notice more condensation or hear more outside noise. Fortunately, seals are relatively easy to inspect and replace. If you’re adjusting your window for energy efficiency, don’t overlook the condition of the seals. A fresh, properly fitted seal can significantly improve insulation without requiring any major repairs. Regular inspection and replacement of worn seals is one of the most cost-effective ways to keep your double glazed windows working efficiently.
Preventative Maintenance for Long-Term Energy Savings
Preventative maintenance is often the difference between windows that last for decades and those that fail prematurely. Simple tasks carried out once or twice a year can keep your double glazed windows in top condition and functioning at their most energy-efficient. Start by cleaning around the hinges, locks and tracks to prevent build-up of dirt or debris, which can cause friction and misalignment over time. Lubricating moving parts with a non-corrosive spray helps prevent sticking or stiffness, particularly in colder months. Make a habit of checking for draughts, unusual gaps or any difficulty with the lock or handle — these are usually early signs of an issue that needs adjustment. If caught early, most problems are simple to fix and won’t require costly intervention. Preventative maintenance doesn’t just protect your windows; it protects your home from energy loss and unnecessary wear and tear. With a little regular care, your windows can continue to perform well for many years to come.
How Do You Adjust Double Glazed Windows?: When to Seek Professional Help
While many adjustments can be done independently, some issues may require expert assistance. Contact a professional if:
- The window frame is severely warped.
- The glass unit has visible condensation inside.
- Adjustments fail to resolve draughts or operational issues.
Visit our Double Glazing page for more tips and expert services.
FAQs
Q1: How do I know if my double glazed windows need adjusting?
A1: Look for signs like draughts, difficulty opening/closing, or gaps between the sash and frame.
Q2: How do you adjust double glazed windows without professional help?
A2: Yes, basic adjustments to hinges, locks, and seals can be done with common tools like a screwdriver and Allen key.
Q3: How often should I inspect my double glazed windows?
A3: Inspect your windows at least once a year to ensure they’re functioning correctly and to address any minor issues promptly.
For more ways to save energy in your home, check out the official Gov.uk page.