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10 Wrong Answers To Common Repair Timber Windows Questions Do You Know The Right Ones?
How to Use Wood Fillers to Repair Timber Windows

Many wooden windows are afflicted by rot, which can cause a range of issues, including peeling paint, windows that stick and rattle. Repairing your historic windows can improve their energy efficiency and keep them in good condition.

The first step is to determine the extent of the decay. This can be achieved by examining the wood using a sharp instrument and by examining the windows for damp, sunken corners and crumbly areas of wood.

Wood Fillers

Wood fillers are a fantastic method of sealing cracks and crevices within old wooden windows. They are typically made of sawdust or other wood shavings that are suspended in a petroleum or water base, and can be used to fix rotting or damaged timber frames, window sills and sash windows. They can be tinted to match the color of the timber, sanded and then stained or painted. However, glass window repair is important to select the correct type of filler for your requirements. This guide will help you choose the best one for your project.

The first step in removing the paint is to remove it from the window sill. This will identify any areas that need to be treated and will also allow you to assess the condition of the timber. If the window is rotten to many rots, it might not be able to be repaired.

The next step is to determine the root of the decay. If the wood is unstable due to an absence of support, it's going to need to be treated with structural consolidant. This will help stabilize the wood and can be applied using the use of a paintbrush or similar device. After this, the rotted wood can be treated using an water-based filler like Bondo(r). Water-based wood fillers tend to dry more quickly than solvent-based fillers and are easier to clean since they don't need acetone to get rid of.

Another option is to apply the standard caulk made of acrylic in the gaps between the window frame and wall opening. It's a good choice and is easy to apply and works with all paints. However, it is important to check the frame for rot before applying this method, since too much sanding can make the gap too large and the window susceptible to leaks.

The final option is to utilize heavy-duty epoxy. This type of filler is made to endure extreme conditions, such as humidity, heat, and freezing temperatures. It can be sanded or carved when it is hard, which gives you more control over the final outcome. However, it is important to note that this filler will absorb stain differently than natural wood and it is unlikely that an exact color match can be achieved.

Spliced Repairs

Timber windows can add a touch of class to any home, and when properly maintained, they'll last for many years. As time passes, they could become damaged. The window frames that have been damaged are prone to damp, insect infestation, and rot. They should be addressed promptly to avoid further deterioration.

To ensure that water does not enter the sill or rotted timber and to help insure that damp fungus does not re-infest the area a repair of the splice is often required. The area is cleaned of decay and fungus. The timber is then spliced together and resin-bonded using the window care system to insure that the joint does not move and allow moisture in.

This is a great way to replace wood that has become decayed and is especially beneficial in situations where splicing is less expensive than replacing the entire sill. This repair method can also be used to replace a small section that is decayed but has not impacted the surrounding woods.

When carrying out repair work to a splice, it's essential to use high-quality timber which will hold the cement in place and endure any movement of the splice. It is crucial to eliminate any emulsion that has been spliced and avoid applying too much film cement, which could cause it to bleed and mark the lining. It is a good idea that after the splice been completed, to seal the edges to hold the repair in the correct position. Then apply the film adhesive starting from the center outwards (fig. 11.1 IV).

It is recommended to cover the entire area with a damp prevention and treatment compound to avoid further degradation. It is also recommended to regularly paint or stain timbers to protect against UV light and weathering, and to ensure any preservative used remains in contact with the wood to provide the best protection.

Replacement Parts

Windows made of timber are a gorgeous feature that can add to the look of a house. As time passes, they may be damaged by extreme weather conditions and dampness. Regular maintenance can reduce the need for costly replacements and extend their life.

If the wood of a window frame starts to decay, it could cause problems with the window's operation and even lead to its collapse. If the rot is severe it may be necessary for the timber to be replaced completely. This can be expensive. With the right care and upkeep, a timber windows can be restored to their original state without the need for replacement.

Repainting your timber windows is a great method to maintain their appearance. It's a simple procedure that can transform windows. Before painting, it's essential to clean the surface thoroughly, including sanding and taking off paint layers. Natural linseed oils are an excellent choice since they provide excellent protection and are available in a range of colors. It is important to not clog the draught strip paint, since this could stop them from working efficiently.

Before you begin any work on your windows made of timber it is important to ensure that the wood is dry. It can be difficult to determine with naked eye, but the moisture meter is available. Moisture can create the perfect conditions for wet-rot to grow in wood, which could cause serious damage.


Any splinters, cracks or soft spots need to be addressed immediately as these can be a gateway to decay. Check for soft spots by applying a slight pressure. Wood that is healthy and sound will feel solid while decaying wood will easily depress.

To stop draughts from entering the home, it is important to check and adjust the draught seals that surround windows made of timber regularly. The handles and hinges of a wooden window should also be tightened to make sure they are secure. Keeping these in good condition can enhance the performance of your window and make it easier to open and close.

Replacement Windows

It is often feasible, rather than replacing the existing timber windows with a new uPVC window, to restore the original wood windows. It can save you money and add value to your home. It may only take repainting, re-sanding and filling in any gaps, based on the condition of your timber window.

It is important to address the sash first, as it is often the first area to exhibit signs. In this part, you may find rotten wood and missing or deteriorated glass putty. This will ensure that the window is sealed properly and prevent any water from entering the building.

Re-sanding and repainting the windows can help to give it a new lease on life and restore it to its original splendor. A good sanding process will protect the wood and ensure that the paintwork lasts for a long time.

If the sash is severely damaged or has suffered from deterioration it is possible to replace it by a custom wooden replacement, made to match the size of the opening. This will allow the same amount of light to enter the room and will not disrupt any original features within the window, such as muntins.

In some areas of the country, particularly in conservation areas, laws on planning protect historic details including intricate brickwork and plasterwork and window frames made of timber. If this is the case then you'll be unable to install a uPVC window replacement in the original opening because it will not fit and could damage the brickwork around the opening.

Wooden frames are more difficult to maintain than uPVC and require regular sanding, filling and painting. However this can add to the appeal of your home. There are uPVC window options that require less maintenance. It is worth looking into before replacing your timber windows.

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