0203 903 6919

London Sash window repair

Are Your Sash Windows Showing Signs Of Wear and Tear? Do They Stick, Rattle, Or Suffer From Rot And Decay?

We restore the charm of your period property with our bespoke sash window repair solutions, enhancing both beauty and functionality.

  • Trusted family-owned and operated company with over 15 years of experience serving London.
  • Highly skilled and experienced team of trusted surveyors, engineers, and tradesmen.
  • Licensed, accredited, and focused on providing quality and professional services.
  • Compliance with building regulations and British building standards.
  • Over 65 employees.
  • Free advice. 


  • ENVIRON RESTORATION SERVICES is your reliable London sash window company with over a decade's experience.

  • Improved airflow and functionality of your sash windows, ensuring smooth operation.

  • Competitive rates on all repairs.

  • We restore and repair sash windows to reinstate the classic look of period homes, adding value to your property.

  • Compliance with building regulations

  • Preservation of original windows using sustainable materials.

Free Expert Advice

When you choose Environ Restoration for your sash window repair needs, you gain access to our friendly and knowledgeable team. We provide free expert advice to help you understand the condition of your windows and identify other factors that may affect their performance. Call us or fill out our online form for personalised guidance.

Energy Efficiency Enhancements

We offer various solutions to boost the energy efficiency of your sash windows. Whether it's restoring internal shutters to retain heat, changing sash cords, applying draught-proofing strips to reduce heat loss, or implementing secondary glazing to create an additional barrier, our services help you make your windows more energy efficient while retaining their original charm.

Preservation of Charm and Aesthetics

We understand the significance of preserving the unique charm and aesthetics of traditional sash windows. Our professional restoration techniques ensure that your windows maintain their original character while enhancing their functionality and energy efficiency. We employ traditional methods combined with modern techniques to achieve exceptional results for your replacement sash windows. 

Cost-Effective Solution

At ENVIRON RESTORATION SERVICES, we believe that quality repairs should be accessible to all. Our cost-effective solutions provide excellent value for your investment, saving you money in the long run by prolonging the lifespan of your windows.


Q: What areas in London do you serve?

A: Our sash window repair service is available across London, including South West London and West London.

Q: Are your repair technicians highly skilled and experienced?

A: Yes! Our team comprises highly skilled and experienced engineers, surveyors, architects and reputable tradesmen dedicated to providing the best.

Q: Do you offer services for double-glazed windows as well?

A: Yes, we provide repair and restoration services for double-glazed sash windows and other window types.

Q: How long does the sash window repairs London process take? 

A: The duration of the repair process depends on the extent of the damage and the specific requirements of your windows. 

Q: What are sash windows? 

A: Sash windows are traditional-style windows consisting of one or more movable panels that slide vertically to open or close.

Q: Can I restore my old sash windows instead of replacing them? 

A: Yes. Our sash windows London restoration services can completely transform your old sash windows and bring them back to their former glory while maintaining their period charm.

Q: Are sash windows suitable for listed buildings or properties in conservation areas? 

A: Sash windows are often preferred for listed buildings and properties in conservation areas due to their traditional style, preserving the architectural integrity of such properties.

Q: What quality materials are used in sash window repairs

A: Unlike other sash window companies, as professional London sash windows repair experts, we only use high-quality materials that match the original style and design of the windows, ensuring durability and longevity.

Q: Can I replace my existing timber windows with double-glazed sash windows?

A: Yes, you can replace your existing timber windows with a double-glazed unit for improved energy efficiency and soundproofing.

Q: Can sash window repairs enhance the energy efficiency of my home? 

A: Yes, sash window repairs, including draught proofing and double glazing, can significantly improve the energy efficiency of your home, reducing heat loss and energy costs.

Q: What is sash window draught proofing? 

A: Sash window draught proofing involves sealing gaps and improving insulation to prevent cold drafts and increase energy efficiency.

Get in touch with our highly skilled team today to schedule a consultation and experience the superior craftsmanship of our sash window restoration services. Our dedication to excellence, attention to detail, and commitment to customer satisfaction set us apart as the leading sash window repair company.

Transform your windows and preserve their charm by choosing ENVIRON RESTORATION SERVICES as your trusted partner. Contact us now!


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