Stop the Sash Rattle: Draught Proof Your Double-Hung Windows

Do your windows rattle in the wind or leak icy air all winter? You’re not imagining it. Traditional double-hung (sash) windows may look charming, but they’re one of the worst offenders for draughts, dust, smoke and noise leaks — especially in older homes.

If you’re tired of shivering near the window or throwing towels across the sill, this DIY project is for you. The Draught Dodgers for Double-Hung Windows are a clever, non-intrusive way to seal up those leaky gaps and make your windows behave like they were actually designed to keep the weather out.

🧰 What Is It?

The Draught Dodgers Double-Hung Window Kit is a discreet, high-performance draught-proofing system for Sash, double hung or vertical sliding timber windows.  It even seals the gap between the top and bottom windows!  

The kit combines custom-fitted timber mouldings with sturdy brush seals to stop air infiltration without affecting how your windows open or close.

This is the professional standard kit, adapted for DIYers who want their windows to look great and perform like they should.

🏡 What Problem Does It Solve?

Ok – so here is a bit of fun explaining what are the issues you are trying to deal with. 

Double-hung windows are beautiful but incredibly leaky — especially when they’re a few decades old. Here’s what you’re likely dealing with:

  • Cold air creeping in around the sashes in winter
  • Warm air escaping (hello, higher energy bills!)
  • Dust, pollen, and noise slipping through the gaps
  • Rattling or movement on windy days
  • Difficulty keeping rooms at a stable, comfortable temperature

Draught Dodgers stop all of that — while preserving the look and functionality of your windows.

🛠️ What’s in the Kit?

Everything you need to seal one double-hung windows (both top and bottom sashes) including:

🟢 Pre-cut timber Draught Dodgers mouldings – in either raw timber or white aluminium
🟢  Strong adhesive backing (no brad gun needed!)
🟢  Flexible, long-life brush seals
🟢 EMV to seal between the top and bottom windows
🟢 Fitment tool for perfect placement
🟢 Step by step video instructions to guide your install to a professional grade finish

🧑‍🔧 How to Install It

Installation is straightforward and satisfying — no special skills required.

📽 Prefer to watch?

This video provides you with step-by-step instructions on how to achieve a perfect seal of your double hung windows.

 📖 Prefer to read?

Prep the Window
Give your sash window frames a thorough clean so the adhesive sticks well. Make sure the window opens and closes properly.  Draught proofing will not fix a broken window.  🙁 

Fit the Draught Dodgers Mouldings
Use the included placement packer to fix the timber mouldings to the inside frame. The pre-fitted adhesive strip makes it easy to get them aligned and in the right place.

Fit the Centre Seal
Fit the EMV to the seal between the top and bottom windows. This forms a flexible barrier that stops draughts without interfering with movement of the windows. 

Test & Admire
Open and close the window a few times. Notice how it still glides like a charm?
Now notice how the breeze has disappeared. ✨

✅ Why This Works (When Other Solutions Don’t)

Most off-the-shelf draught stoppers (especially foam strips) don’t work with moving sashes.

They either:

  • Block the movement entirely
  • Fall off
  • Don’t seal properly and leave gaps 
  • Look terrible 😬

Draught Dodgers are different. They work with the design of your windows, not against them.  No ugly gaps. No compromise on how your windows work. Just comfort, savings, and a lovely finish.

Doorkit ecoMaster

Common Questions and Troubleshooting

How long does it take to seal a window?

Allow about 30–45 minutes per window to start with — less once you get into the swing of it!

Will it stop rattles too?

Yes! The brush seal helps prevents the rattle (especially on windy days) and the EMV seal in between the top and bottom windows prevent the whistle often associated with sash / double hung windows.

Can I paint the mouldings?

Absolutely. There are two options – raw timber which can be stained or painted to match existing joinery; or white aluminium which can also be painted, or left white.

What if my gaps are uneven?

No problem — we LOVE uneven gaps!  The Draught Dodgers system is designed to accommodate inconsistent gaps, unlike foam strip options.

💡 Expert Tips

  • Great for heritage homes or renters with permission to make non-destructive upgrades
  • If you’re only sealing 1 or 2 windows, individual packs are available
  • Can be painted to match your existing trim for a seamless finish

Combine with Invisible Pelmets or heavy curtains for a full thermal upgrade

🛒 Ready to Stop the Rattle?

You’ve made it this far — now it’s time to take action.

Sealing your leaky sash windows is a simple, high-impact upgrade:

✅ Shop the Draught Dodgers Double-Hung Kit – 4 Windows – best value if you’re sealing multiple windows.
✅ Single Window Kit – perfect for smaller jobs or trialling the system.
✅ Not sure where to start? Try Find and Fix My Draughts to pinpoint all the sneaky air leaks in your home.

Related Resources

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How-to Videos: