Weathered window frame

Timber Window Repair

Having timber windows may look aesthetically pleasing on the eye, however, over time, these can deteriorate. Instead of replacing the whole window, it is better to have timber window repairs carried out.

This will not only benefit the property owner by saving money on costs of having a new window installed but it will also preserve the aesthetic features of the property as well.

At Timberwise, we have the experience and knowledge in providing repairs to timber-framed windows and make sure that any repaired timber windows look in tip-top condition.

We provide timber window repairs for all types of properties including residential buildings, listed buildings, office spaces, retail outlets, we will work with you thorough out the process to fit your needs.

Why Do Timber Windows Become Damaged?

As we have already said, over time timber windows will start to deteriorate but there are many reasons for this happening. One of the most common reasons for damaged timber windows is as a result of exposure to dampness.

Damp Problems Leading to Rot

If the window is poorly maintained, then the chances are it will eventually be affected by penetrating damp. Once your property is affected by water penetration then this can lead to serious problems such as rot. For dry rot to occur, then the moisture content of the timber must reach over 20%.

If the wood is spongy and soft, then this is an indicator that the timber window could be affected by wood rot. This will not only affect the way the window looks but also its structural integrity as well.

Wood rot to a windowsill

Wood rot to a windowsill

Defective Lintels and Structural Movement

During the 1940s and 1970s, there were no lintels added above window openings. This is because the original frames could support the weight of the walls above, however, any new replacement windows are not designed to take this weight.

Where there are no lintels added for support, a lintel should be inserted by a structural engineer.  One of the most common signs that the windows do not have lintels will be the occurrence of cracks over the windows.

If the windows have been replaced in cavity walls without any lintel support, then new lintels should be added by a structural engineer so that windows can support the weight of the outer cavity.

Timber Window Repairs and Preservation

One of the biggest reasons for the timber windows to breakdown or deteriorate is a lack of maintenance, so to keep them in good condition, repairs should be carried out regularly. If the timber window starts to deteriorate then it will become vulnerable to damp penetration.

Fixing Wood Rotting Windows

If the dampness at the property has led to wood decay on the timber windows, then you will need a specialist to carry out the works. The process will involve cutting out the large sections of damaged timber that has been affected by rot. This damaged timber will then be replaced with new timber.

The sections of unaffected timber will have a masonry biocide applied along with fungicide pastes to prevent further attacks from wood rot and woodworm beetles.

Repairing Sash and Casement Windows

It is common for Sash and casement windows to have window repairs carried out, and this is due to their vulnerability to leaks, rattles and draughts. The common process for repairing sash windows is:

  • The windows will first be removed from the frame.
  • The decaying timber will then be removed.
  • Epoxy resin will be used to fill in the gaps and then timber splicing will be implemented where the original timber is beyond repair.
  • The glass is then put back into its original place.

Once the sash windows have been repaired this is where draught proofing can be carried out.

Draught Proofing Windows

If moisture is entering through the gaps in and around your windows, then this can lead to condensation forming around the windows. When condensation starts to develop then mould is likely to occur soon after.

One element to preventing condensation from occurring on the timber windows is to improve the ventilation. Extractor fans should be used or installed – especially if you don’t have one in the rooms that are susceptible to high moisture content, such as bathrooms and kitchens.

If this doesn’t work, then you may have to look into draught proofing the timber windows. The key is to seal the gaps between the frame and wall. Where there is a gap in the insulation (cold bridge) a plastic cavity closer should be added the windows have been refitted.

Contact Us for Timber Window Repairs

If your timber windows are suffering from damp, rot or deterioration then we have specialists across England and Wales to help you. First, a surveyor will carry out an inspection at the property and then detail what the problem is and then explain what works will be needed to rectify the window. You contact our team by calling us on 0800 288 8660 or requesting a survey online.