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How To Survive Your Boss With Repair Timber Windows
How to Use Wood Fillers to Repair Timber Windows

Many wooden windows are prone to rot, which can lead to a variety of issues including the paint flaking, sticking windows and the sound of rattling. Careful repair can keep your windows in good condition and increase their energy efficiency at the same time.

The first step is to identify the extent of the rot. This can be done by probing the wood with a sharp instrument and by looking through the windows for sunken, damp corners, and areas of crumbly wood.

Wood Fillers

Wood fillers can be used to fill the crevices and cracks of old wooden windows. They are made from sawdust or other wood shavings that are suspended in a petroleum or water base. They can be used to repair rotting timber window sills and frames or sash windows. They can be stained or tinted to match the existing wood, and then painted. This guide will help you choose the most appropriate filler type for your needs.

The first step is to strip the paint that is present, especially from the window sill. This will reveal any areas that require to be treated and also allow you evaluate the condition of the wood. If the window is suffering from too much rot, it might not be salvageable.

The next step is to determine the source of the rot. If the wood is unstable due to lack of support, you'll have to treat it with a structural stabilizer. This will help stabilize the wood and can be applied using paintbrushes or other similar tools. After double glazed window repair is done the wood can be treated with water-based wood fillers, like Bondo(r). Water-based wood-fillers dry faster than solvent-based ones and are less difficult to remove because they do not require the use of acetone.

Another alternative is to use regular acrylic latex caulk to fill the gaps between the frame of the window and the wall opening. This is a great option and is easy to apply and will accept most paints. It is essential to check the frame for rot first because too much sanding could make the gap too large and the window prone to leaks.

A final alternative is to use a heavy-duty epoxy filler. This type of epoxy filler is created to stand up to extreme temperatures, humidity, and heat. It can be sanded and cut when hard, which gives you greater control over the final outcome. It is important to note that this kind of filler will absorb stain in a different method than natural wood, and that it is not likely to produce an exact match.

Spliced Repairs

Timber windows can provide a touch of class to any house and with proper care, they'll last for a long time. However, with time they may become damaged and in need of repair. Window frames that have been damaged are susceptible to insect infestation and rot and should be addressed immediately to stop further damage.

A splice is usually required to ensure that water doesn't infiltrate the sill, or rotted wood, and also to stop damp fungus from returning to the area. The area is cleaned to remove all decay and fungus. The timber is then spliced and resin is bonded with the Window Care System to ensure that the joint will not move and let moisture in.

This is a highly efficient method of splicing in decayed timber, and is particularly beneficial in situations in which it is cheaper to splice instead of replace the entire sill. This kind of repair can also be used to replace a small section that is rotten but has not affected the woods surrounding it.

It is essential to select high-quality lumber to repair a splice. This will help to hold the cement and resist any movement. It is essential to remove any emulsion that has been spliced and to avoid applying excessive film cement which could cause it to leak and damage the lining. Once the splice is completed, it is a good idea to tape one edge to keep the repair in place and then to apply the film cement working from the centre outwards (fig 11.1 iv).

To avoid further deterioration It is recommended to seal the areas of repair with a damp prevention treatment compound. It is also advisable to regularly paint or stain the timbers to protect them from the effects of weathering and UV light. It is also important to ensure that any preservative used remains in contact with the wood for maximum protection and longevity.

Replacement Parts


Timber windows can add a lot of character to a home. As time passes, they may be damaged due to extreme weather conditions and moisture. Regular maintenance can avoid the need for costly replacements and also help to extend their life.

When the wood in the frame of a window begins to decay, it could cause issues with the operation of the window and may even lead to collapse. If the rot is extensive it could be necessary for the timber to be replaced completely. This can be expensive. With proper treatment and maintenance, timber windows can be restored back to its original condition without the need for a replacement.

A great way to keep your timber windows in good condition is to repainting them. It's a simple procedure that can bring new life to a window. It's important to ensure the surface is prepared prior to painting, which includes the sanding process and stripping paint layers. Natural oil paints made from linseed are an excellent choice as it is a great protection and comes in a range of colours. It is important to not block the draught strip paint, since this could stop them from working efficiently.

Before you begin any repairs to your timber windows it is crucial to check that the wood is dry. This is difficult to check by eye however, it is possible to use a moisture meter. Moisture can create the perfect conditions for wet-rot to grow in timber, which could cause serious damage.

Cracks, splinters or soft spots need to be addressed immediately as they could be a path to decay. It's a good idea test suspected soft areas of timber using a light pressure. Healthy, sound timber will feel solid but decaying wood will easily depress.

To keep draughts out of the home, it's essential to inspect and adjust the draught seals that surround the window made of wood regularly. The hinges and handles of a wooden window should be tightened to ensure they are secure. Maintaining them in good shape can enhance the performance of your window and make it easier to open and close.

Replacement Windows

Rather than replace the existing wooden window with a brand new uPVC one, it is often possible to restore the original wooden windows. This not only saves money, but it can also add value to your home. It may only take repainting, re-sanding and filling any gaps, depending on the condition of your wood window.

It is crucial to tackle the sash first, since it is usually the first area to exhibit signs. Missing or deteriorated glazing putty and rotted wood are common problems to address in this region. This will ensure that the window is able to seal properly and prevent water from entering the building.

Re-sanding and repainting the windows can give it a new lease of life and restore it to its original splendor. A good quality sanding and painting will ensure that the wood isn't damaged and the paintwork will last for several years.

If the sash is badly damaged or has suffered from deterioration, it can be replaced with a bespoke wooden replacement, designed to fit the dimensions of the existing opening. This will allow the same amount of light to pass through the space and won't alter any original features in the window such as muntins.

In some parts of the country, particularly in conservation areas, laws on planning protect historic features such as brickwork and ornate plasterwork, as well as timber window frames. If this is the situation, you won't be able install a uPVC window replacement in the old opening because it will not fit and could cause damage to the brickwork surrounding the opening.

Wooden frames are more difficult to maintain than uPVC, and require regular sanding, filling and painting. However this enhances the aesthetics 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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