Buying a house is exciting—but it can also feel like a whirlwind. With so many big things to consider (roof, boiler, electrics…), windows and doors often get left until last. But they’re worth paying attention to. Poorly fitted or outdated windows can mean future problems with warmth, comfort, and security.
At Milford Window Company, we’ve helped hundreds of homeowners inspect, upgrade, and replace windows and doors. Here’s what we recommend you look out for before making an offer.
1. Examine the window frames carefully
Take a close look at each window frame, both inside and out. Cracks, warping, or visible gaps can indicate age or water damage. For uPVC, watch for yellowing or brittleness. With timber, keep an eye out for rot, flaking paint, or swelling—especially at the bottom of the frames.
Windows in poor condition might need replacing sooner than you think, which could affect your budget post-move.
2. Check for draughts and seal failure
Even if you can’t physically feel a draught during the viewing, there are signs that windows aren’t sealing properly. Look for condensation between panes, or listen for rattling when the wind picks up.
Poorly sealed windows will make it harder to keep your home warm in winter and cool in summer—driving up energy bills unnecessarily.
3. Double or single glazing? It matters
Most buyers now expect double glazing as standard—but some older properties still have single-glazed units. Check the thickness of the glass and the space between panes. You should see a gap and a metal spacer bar around the edges in double-glazed windows.
Also, look for misting or fog between panes—this suggests the seal has failed and the unit needs replacing.
4. Front and back doors deserve attention too
Don’t just focus on windows—doors matter too. A good composite front door will feel solid, well-insulated, and lock smoothly. Test them out. Do they stick? Is the frame damaged? Does the door feel lightweight or flimsy?
A secure, weather-resistant door helps keep your home warm, quiet, and safe.
5. Consider the style and kerb appeal
Windows and doors play a big role in how a home looks from the outside. Do they suit the style of the house? Are they well maintained? Would you need to replace them for aesthetic reasons, even if they still function well?
Replacing tired or mismatched units can dramatically improve your home’s look—and boost resale value later.
6. Ask for paperwork and warranties
If the windows or doors were replaced in recent years, ask to see the FENSA certificate or equivalent documentation. This confirms they were installed by a registered professional (like Milford Window Company!) and comply with current building regs.
It’s also worth checking whether the installations are still under guarantee—you might get peace of mind included in the sale.
The windows and doors of a property can tell you a lot about how well it’s been cared for—and what future costs you might face. Spotting issues early gives you the upper hand during negotiation, or helps you budget for upgrades once you move in.
