Sash Window Draught Proofing
London
Warmer, quieter rooms — without changing the look of your windows.
Cold air and noise through your sash windows — eliminated permanently. We replace the staff bead and parting bead with precision brush pile seals and fit a brush seal at the meeting rail. Warmer, quieter rooms from day one.
The proper way to draught proof
Most draught proofing is a temporary fix — foam strips stuck into gaps. We do it differently. We remove the sashes and replace the structural beads with purpose-made brush pile versions. This is the only method that lasts.
🔧 How We Do It — Step by Step
- Full inspection of frame, sashes and existing beads
- Both sashes carefully removed from the frame
- Staff bead replaced with brush pile bead — both sides
- Parting bead replaced with brush pile bead — both sides
- Brush seal fitted to meeting rail — eliminates central draught gap
- Sashes re-hung, balanced and tested for smooth operation
🌬️ What You'll Notice Immediately
- No more cold air coming through the windows
- Noticeably reduced outside noise
- Windows open and close more smoothly than before
- Lower heating bills — less energy wasted through gaps
Why choose Hartwell Sash
Proper Method
Staff bead and parting bead fully replaced — not foam strips or temporary fixes.
Conservation Areas
Approved for Listed Buildings. No change to the appearance of your windows.
5-Year Guarantee
Every job covered by a 5-year workmanship guarantee. Fully insured.
Get a free survey
We visit your property, assess your windows and give you an honest quote — no call-out fee, no obligation.