1. Rising Energy Bills or Uncomfortable Rooms? Check for Heat Loss
Old or poorly sealed windows can account for 30–70% of heat loss in UK homes. If you're seeing spikes in your heating costs or struggling to keep rooms consistently warm, your glazing could be the culprit.
What to Look For:
- Hold a lit candle or incense near the window frame—if the flame flickers, you’ve found a draught.
- Feel the glass on cold mornings. Single or degraded glazing will be noticeably cold to the touch.
- Look for condensation between panes—a sure sign of failed double glazing.
- Check your EPC (Energy Performance Certificate). A low rating often traces back to inefficient windows.
AT-ECO Tip: We often use a thermal camera during assessments to demonstrate cold zones and pinpoint hidden sources of heat loss.
2. Loose Locks or Wobbly Handles? Security Could Be Compromised
Windows are one of the most common entry points in break-ins—especially older models with basic latches or single-pane glass.
What to Check:
- Worn handles, corroded locks, or windows that no longer shut flush with the frame.
- Visible signs of warping or misalignment, which compromise locking mechanisms.
- Single-pane glass or clip-on stays that offer minimal resistance to forced entry.
AT-ECO Note: Modern systems from Internorm Drutex, and others offer multi-point locking, laminated glass, and reinforced profiles for enhanced safety.
3. Cracked Paint? Warped Frames? Your Windows Are Ageing Visibly
Timber that’s split or warped, faded aluminium frames, or bubbling paint aren’t just cosmetic issues. They often indicate moisture ingress, UV degradation, or material fatigue.
Visual Clues:
- Flaking paint, soft sills, or discolouration at joints and corners.
- Cracks in perimeter sealant or mastic.
- Windows that stick or slam shut due to frame movement.
AT-ECO Note: Many of the frames we replace date back to the 1970s or earlier. Today’s composites like uPVC-aluminium and timber-aluminium require minimal upkeep and resist weathering far better.
4. Tired of Repainting and Resealing Every Year?
Older timber and early-generation uPVC windows often demand regular upkeep to remain functional and weather-tight.
Ask Yourself:
- Are you repainting sills or frames every year or two?
- Do your windows need "persuasion" to open or close?
- Have you had multiple repairs in the last five years?
AT-ECO Insight: Our triple-glazed, powder-coated systems are designed for longevity with minimal intervention—even in exposed environments like coastal towns or rural hillsides.
5. Traffic Noise Driving You Mad?
If you live near a main road, railway, or urban centre, insufficient acoustic insulation may be impacting your comfort.
How to Test:
- Can you clearly hear passing traffic or outdoor conversations with windows shut?
- Does wind cause whistling sounds or sudden pressure changes indoors?
AT-ECO Tip: Our installations in London, Sevenoaks, and Tunbridge Wells have shown noise reductions of up to 48 dB when upgraded to triple glazing with acoustic seals.
6. Thinking of Selling? New Windows Can Boost Value and Buyer Appeal
Window condition is often one of the first things prospective buyers notice. Outdated, draughty, or visibly aged units can put them off.
Consider Replacement If:
- The window style or finish feels outdated (e.g., Georgian wire glass or faded brown uPVC).
- You’re looking to improve your EPC rating ahead of a sale.
- You want your kerb appeal to match the rest of a renovated property.
According to recent UK housing surveys, high-performance glazing can recoup 60–70% of its cost on resale—and even more in design-led or eco-conscious homes.
Final Thoughts: Let’s Assess Before You Replace
At AT-ECO, we don’t just sell windows—we help homeowners make confident, informed decisions. If you're seeing any of these signs, book a free window health check with our team.
We’ll assess:
- Draughts and airtightness
- Glazing performance and condensation
- Frame integrity and seal condition
- Acoustic insulation and energy loss
You’ll get tailored, no-pressure advice and a clear roadmap for any necessary upgrades.
