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Timber Window Repair for Period Properties in London

Timber windows are significant source of the quality and charm of period properties. As such, they are often protected by planning law, and even when not, there is more value in looking after timber windows than replacing them.

Our skilled carpenters and joiners perform meticulous and sympathetic repairs to restore the form and function of sash and casement timber windows across London’s period homes. Environ Property Services are dedicated to the restoration and preservation of historic fabric wherever possible.

Our director, Terry Clark, is a member of The Society for the Protection of Ancient Buildings where he is engaged with the latest research and training in best practice when performing building works on old properties. Rot, mould, warping and sticking in timber windows can all be repaired and do not necessitate replacement. Get in touch with us now request a call back to find out how we can give your windows a new lease of life.

Common Causes of Timber Window Damage in Period Properties in London

Not only are timber windows susceptible to the passage of time, but they are also vulnerable to external elements such as weather and pollution. Over the years, the wood can become warped or cracked due to natural wear and tear. Regardless of the type of timber, Sash, Bay, and Casement windows can also be susceptible to problems like leaks, drafts, and other costly issues.

In London, here are the common cause of timber window damage in period properties:
  • Poor installation.
  • Humidity and moisture.
  • Intense sunlight.
  • Pests.
  • Lack of maintenance.

It is important to be vigilant about the condition of your windows, as any issues may affect their performance and can become more costly to repair with time. With that said, how do you know when it is time to seek help from a timber window repair specialist?

When Should You Repair or Restore Your Timber Windows?

Here are some things to keep in mind when deciding whether to repair or restore your timber windows:

  • Regularly check your windows for signs of damage, such as cracks or warping.

  • Pay attention to the frames, hinges, and locks for any wear and tear.

  • If you notice any issues with energy efficiency or air leakage, consider restoration services.

  • Consider timber window repair services if the frames are still in good condition but need minor repairs.

  • If the windows are severely damaged or rotten, complete timber window restoration is necessary to restore them to their former glory.

Professional maintenance from Environ Restoration Services will keep your timber windows in top-notch condition.

The Benefits of Replacing Your Timber Windows

When restoring period properties, timber windows are a crucial element. They’re often among the most eye-catching features of the home and can provide a great deal of charm to the architecture. However, not all timber windows are created equal – and if you own an older property in London, chances are your fixtures have seen better days.

  • Enhanced energy efficiency.
  • Improved home security.
  • Increased property value.
  • Reduced noise pollution
  • Better ventilation.
  • Renewed aesthetic appeal.

Replacing your timber windows can also help reduce the risk of future problems and provide you with peace of mind for years to come.


Sash windows slide up and down using a rope pulley and counterweight. This simple and durable system has lasted for hundreds of years, and with the appropriate maintenance there is no reason not to continue using sash windows. A sash window should be able to move smoothly with no more force than the push of your finger, with no friction and no rattle and form an airtight seal when closed. That might sound too good to be true if you're used to poorly maintained sash windows, but we can this is how they're supposed to work and exactly how sash windows perform after we have repaired them.

How Can Our Professional Timber Window Repair Service Help Keep Your Windows Troubles Free?

From sash window repair to bay window restoration, our professional timber repair and restoration service can provide the expertise to keep your windows trouble-free. We can easily identify issues and offer reliable solutions tailored to your property's needs, so you don’t have to worry about future repairs or replacements.

We can help you with the following:
  • Inspecting and cleaning windows to ensure proper functioning.
  • Replacing broken locks, handles, or hinges.
  • ealing cracks to prevent air leakage.
  • Applying protective treatments and coatings for longevity.
  • Carrying out maintenance and repairs on all types of timber windows.

Environ Services Period Timber window repair services  can help ensure your windows stay in top condition. By taking a proactive approach to maintenance and repairs, you can rest easy knowing that your property's timber windows are safe and secure.

Trust Environ Restoration Services for Timber Window Repair in London!

At Environ Restoration Services, we specialize in restoring and preserving period properties by providing reliable and excellent timber window repair and maintenance services. We understand that each property has unique character and requirements, so we tailor solutions to meet every need. Our team of professionals is highly experienced in all types of timber windows, from traditional to modern designs.

We use high-quality materials and guarantee that your windows will be restored with the utmost care and attention. We offer a range of services for both residential and commercial properties, including sash window repair, casement window restoration, and more.

At Envi

ron, we specialize in Period window repair and Sash window repair, which can include but are not limited to:
  • Sash window repair service.
  • Complete Sash window replacement.
  • Double-glazed sash windows.
  • Casement window repair.
  • Casement window replacement.
  • Bay sash window restoration.
  • Timber windows repairs.
  • Replacement sash windows and timber frames.
  • Maintenance and protection treatments like Sash window draught proofing for all windows and more!

You can trust Environ Restoration Services to get the job done right, thanks to our skilled carpenters and our director, Terry Clark, who is a member of The Society for the Protection of Ancient Buildings. 

If you’re looking for reliable timber window repairs in London, trust the professionals at Environ Restoration Services to get the job done right. Contact us today for a free quote!

Tips for Protecting Your Timber Windows from Future Damage and Wear

Timber windows can last for many years, provided they are well maintained. A few simple steps will go a long way in helping to protect your timber windows from future damage and wear.

  • Clean the frames regularly to prevent dirt and dust buildup.
  • Check the sills and wood regularly for signs of mold or rot.
  • Invest in window treatments such as shutters or blinds to protect the windows from intense sunlight.
  • Inspect locks and hinges for signs of wear and tear, and repair them immediately if needed.
  • Install weather stripping on the seals to prevent air leaks.
  • Check for gaps between the frames and sashes that might indicate loose components.
  • Apply a protective finish to the frames and sashes regularly.

Following these tips and seeking professional help, you can keep your timber windows in good shape for years. A well-maintained set of timber windows will look great and add value to your property, so keeping them in good condition is important.

Timber Window Restoration vs. Replacement

While restoring existing fixtures is usually more budget-friendly than opting for replacements, it's essential to take additional factors into account before reaching a decision. Here are key considerations to weigh when choosing between timber window restoration and replacement:

  • The age and condition of the existing windows.
  • The cost of repair versus replacement.
  • Energy efficiency considerations.
  • Potential changes to property value.
  • Whether or not you want to retain the original features of the home.

It is best to speak with a professional timber window repair service before making your decision, as they can provide more information and insights to help you make an informed choice.


Q: How often should I get my timber sash windows serviced for maintenance?

A: It is recommended that timber sash windows repair services be made twice a year to ensure they remain in good working condition. Regular maintenance will help keep them looking their best and avoid costly repairs down the line.

Q: What is double glazing?

A: Double glazing is a type of window where two panes of glass are fitted into the frame, with an air gap between them. This creates more insulation and provides better soundproofing than single-glazed windows.

Q: Why should I consider timber window repair for my period property in London?

A: Timber window repair maintains the authenticity and charm of your period property while enhancing energy efficiency and extending the windows' lifespan.

Q: How do I know if my timber windows need repair?

A: Look for signs of decay, rot, drafts, or difficulty in operation. A professional assessment can determine the extent of repair needed.

Q: Is timber window repair cost-effective compared to replacement?

A: Yes, restoration is often more budget-friendly than full replacement and can maintain the historical character of your property.

Q: How professionals for Timber or sash window repair services can help?

A: Professional timber window repair services can benefit period properties. They are experienced in restoring existing sash windows to their full potential and helping them last longer than normal. In addition, timber sash window repairs also help maintain property values and improve your home's energy efficiency.


In conservation areas, you will need to ask for planning permission to modify period timber windows on the street-facing side, while listed buildings will have protections on all windows in the house. If you are permitted to replace the windows, it is usually on the condition that the replacement is conservation approved period replicas, built exact to the millimetre with the originals. Because of the cost involved in producing such replicas, you need to consider whether it is more cost effective to repair or replace period windows. Except for the most extreme situations of long-term neglect, most timber windows can be repaired.

Rotten sections of timber can be cut away and replaced, while warped framed can be planed and sanded back into shape. Mould is often a result of condensation, which is an issue with ventilation and moisture permeability in the property, not an issue with the window itself.


Contrary to popular opinion, PVC windows aren't more durable than traditional timber frames. This has been proven by the fact that many PVC windows installed in the 90s are already having to be replaced, while timber windows from the Edwardian era are still going strong. Due to their typically very high-quality hardwood construction, it is almost always advised to repair rather than replace period windows, especially because many of the problems people associate with timber windows are a result of disrepair, not the design themselves.

A well-maintained timber window will be sealed from draughts, bone dry to the touch and open and close smoothly. They add significant value to period properties and, once fully repaired, should last a lifetime. If you want to improve the thermal or acoustic performance of your windows, we can install a second removable interior pane with opens inwards inside the property. This solution is accepted by planning departments and won't damage historic fabric.

Final Thoughts

Timber window repair for period properties in London has challenged many individuals and businesses. Knowing that you can rely on experienced restoration companies to sustain the upkeep of your windows fastens up your worries. Although restoration may require an upfront cost, the value of returns is unimaginable. For perfect results, save time and money by enlisting environmental restoration services. With their dedicated technicians and modern state-of-the-art techniques, you will surely benefit from their expertise in period window repair London.

Environ Restoration offers quality services for Period Window repairs in London, including rot and decay assessment. We use the latest technology to ensure the job is done quickly and efficiently while keeping the original features intact. Forget about sourcing expensive materials or timbers; we will provide you with quality repairs at an affordable price - all within a realistic time frame that suits you. Contact us today to discuss how we can help you!

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