Draughty sash windows – Causes, solutions, and how to keep your home warm

Draughty windows are a real headache, aren’t they? If you’re sitting in your living room wrapped in a blanket and still feeling cold, chances are your timber sash windows are letting in more than just light. Draughts not only make your home chilly, but they also drive up your energy bills as heat escapes and cold air sneaks in. Let’s look at the causes of this issue and, most importantly, how you can fix it.

What causes draughty sash windows?

It’s no surprise that traditional sash windows, beautiful as they are, often struggle to keep draughts out. They’ve been around for centuries, and while their charm is timeless, their efficiency sometimes isn’t.

1. Wear and tear: Over time, window gaps open up in the frames and sliding parts, letting cold air whizz through.
   
   
2. Neglected maintenance: When seals start crumbling, putty cracks, and the wood begins to warp, draughts are inevitable.
   
   
3. Single glazing: If your sash windows are single-glazed, they’re just not built to keep heat in and cold out.
   
   
4. Gaps in the joinery: Small gaps between the window sashes or around the frame can quickly turn into breezy problems.
   

Sound familiar? Don’t worry; there’s plenty you can do to turn things around.

Solutions to fix draughty windows and reduce energy bills

The best part is that you don’t have to endure a draughty home any longer. Here are some simple yet effective methods to address cold spots, boost insulation, and create a cosier living space:

1. Seal your wooden sash windows

One of the easiest fixes is sealing a window using draught-proofing strips. These adhesive strips can be stuck to the edges of the sashes to plug the gaps. If you want something that lasts longer and works better, brush strips or professional sash window draught proofing systems are the way to go.

2. Double glazing – A smart energy upgrade

Trying to keep your home warm without losing its charm? If you live in listed buildings, the houses are protected for their historical significance, so you may need permission from your local authority to make changes like installing double glazing. 

Fortunately, there are modern double glazing options designed to match the original look of your windows, keeping the building’s character intact while improving insulation and cutting down on draughts. With double glazing listed building solutions, you can stay cosy and energy-efficient without compromising on style.

3. Get the professionals in

If tackling it yourself isn’t ideal, hiring a professional sash window service is a valuable investment. They’ll repair the window frames, install proper draught-proofing systems, and even balance your sashes so they slide smoothly. It’s a quick way to get your windows performing at their best. Need expert help? Look no further than this sash window service.

4. Add insulation inside

Thermal curtains or blinds are a straightforward and reliable way to enhance insulation. Pair them with secondary glazing for an extra layer of warmth that won’t let cold draughts sneak through. Stylish and practical – what’s not to love?

How to draught proof sash windows yourself

If you fancy having a go yourself, sash windows draught-proofing can be a rewarding DIY project. Here’s how to get the job done step by step:

1. Inspect for gaps: Open and close the windows to spot where the draughts are coming from. Pay attention to gaps along the meeting rails, parting bead, staff bead, and corners.
   
   
2. Clean the surface: Gently use a soft brush or cloth to clear away dust, dirt, and any flaking paint. A clean surface helps draught-proofing strips stick better.
   
   
3. Fit draught-proofing strips: Use self-adhesive foam strips or brush seals. Attach them carefully along the edges of the sashes, the meeting rails, and where the window closes against the frame.
   
   
4. Repair damaged putty: Check the window panes and replace any cracked or missing putty that seals the glass to the frame. Remove old putty with a scraper, apply fresh putty, and let it dry fully before painting.
   
   
5. Lubricate the tracks: If your sashes are sticking, use a candle or wax to lightly lubricate the window tracks so they can open and close smoothly after draught-proofing.
   
   
6. Check the fit: After fitting everything, open and close the windows to ensure the seals are effective but not too tight. Properly fitted draught seals should reduce draughts but still allow the windows to slide.
   

With careful effort and attention to detail, you can effectively eliminate cold draughts and create a warmer, more inviting home.

Avoid these common draught-proofing mistakes

While draught-proofing sash windows is a smart move, it’s easy to trip up along the way. Here are some common mistakes to watch out for:

1. Sealing too tightly: It might seem logical, but over-sealing can prevent your windows from proper ventilation, leading to damp problems.
   
   
2. Using the wrong materials: Thick or low-quality seals can stop your sashes from opening and closing as they should.
   
   
3. Skipping repairs: If you’ve got cracked putty, loose sashes, or rotten wood, draught-proofing alone won’t solve the problem.
   

Getting it right will save you time, money, and plenty of frustration.

Final thoughts

There’s no reason to suffer through another winter with draughty sash windows. Whether you’re sealing gaps yourself, investing in secondary glazing, or calling in the pros, there’s a draught-proofing solution that’ll work for you. Putting in a bit of effort now can lead to a cosier, more energy-efficient home and noticeably lower heating bills.

Don’t let cold draughts ruin the charm of your original sash windows. Fix the problem, and you’ll enjoy a warm, snug home for years to come.