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Traditional Sash Window Specialists in London

We restore original timber sash windows using traditional methods and quality materials.

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  • Free Survey
  • No Call-Out Fees
  • Honest Pricing
  • Clean & Reliable Workmanship

Why Choose Hartwell Sash

We focus on restoration first and replace components only when necessary.

  • Free Survey
  • No Call-Out Fees
  • Honest Pricing
  • Clean & Reliable Workmanship

WHAT WE DO

We carefully restore traditional sash windows and replace only what is necessary, preserving the character and integrity of your property.

Sash Cord Replacement

We replace worn or snapped sash cords to restore smooth, safe and balanced window operation.
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Glass Replacement

We carefully replace cracked, misted or broken glass while preserving the original timber frame.
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Professional Draught Proofing

Our discreet draught-proofing solutions improve comfort and energy efficiency without altering your window’s character.
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Timber Repairs & Repainting

We repair damaged timber and professionally repaint to protect your windows against the elements.
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Ironmongery Replacement

Traditional locks, lifts and fittings replaced or upgraded to complement your existing sash windows.
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See the Transformation

Careful restoration can dramatically improve the appearance, insulation and smooth operation of your sash windows while maintaining their original character.

Before After
Before After
Before After
  • Free Survey
  • No Call-Out Fees
  • Honest Pricing
  • Clean & Reliable Workmanship

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Please upload clear photos of the window(s) that need repair.
  • Same-day response
  • No obligation quote
Serving London & Surrounding Areas
  • Honest and Fair Pricing
  • Fully Insured & Experienced
  • 5 Year Workmanship Guarantee
Follow Our Recent Projects

See more of our recent sash window restorations on Instagram.

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Restore Your Sash Windows the Right Way
  • Serving London & Surrounding Areas
  • Free, no-obligation quotations
  • Same-day response

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