Sash Cord Replacement
London
Windows that slam shut or won’t stay open — fixed properly.
Before
AfterWindows that slam shut, feel heavy or won’t stay open — fixed properly. We replace all four cords and rebalance both sashes as standard, so your windows work the way they were designed to.
Signs your sash cords need replacing
- Window falls shut as soon as you let go
- One side feels heavier than the other
- You can see a frayed or snapped cord inside the frame
- Window rattles badly when closed
- Sash is stiff, difficult to slide or has dropped in the frame
Step by step — done properly
🔧 The Replacement Process
- Staff beads carefully removed to access the sash
- Both upper and lower sashes removed and inspected
- Weight box opened — cast iron weights cleaned and checked
- All four cords replaced with quality waxed sash cord
- Pulley wheels oiled and tested for smooth running
- Sashes re-hung, balanced and tested — windows left perfect
💡 A Good Time to Add Draught Proofing
Because we remove the sashes entirely to replace the cords, this is the perfect opportunity to add draught proofing at the same time — with no extra disruption. Many clients combine both services in a single visit and save significantly.
Why choose Hartwell Sash
All Four Cords
We replace all four as standard — not just the broken one. Proper balance restored.
No Call-Out Fee
Honest, transparent pricing from the start. No surprises when we arrive.
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.