How to Repair Timber Windows

Windows made of timber are a stunning feature that can truly set a property apart. However, with time and exposure to harsh weather conditions, they could begin to fade.

Rather than replacing timber window frames, it's better to make repairs. This will save money and help the home retain its character.

Repairing rotten wood

Window frames made of wood are exposed to the elements throughout the year, and are often one of the first places of a house to exhibit signs of damp and damage. Fortunately, a lot of instances of rotten wood are fixable and can be addressed relatively quickly. The key is to identify the problem and take action before it worsens, or even more damage can be caused.

It's important to first assess the extent of the rot and then determine if it can be salvaged. A thorough exterior inspection is a good place to begin, examining for slates or tiles that are damaged on the roof or gutters that are blocked, as well as damaged damp proof course (DPC). Also, you should check the interior of the property including the cellars and basements as well as the joists' ends on a the wall that is not cavity-free.

As soon as you have identified the affected area rot it is important to get rid of the wood that has rotted as much as possible. This will reduce the damage and make the rest of the repairs easier. The next step is to make use of a pry bar, or a clawed hammer to try and remove as much of the rotted timber as you can. This can be a bit difficult, but by inserting the clawed end of the pry bar into the corner and rubbing it against the healthy wood you should be able to create enough force to break the old timber free.

Be sure to leave a gap of space between the timbers when you remove the rotten wood. This will prevent moisture from leaking into the wood and causing damage to the timbers around the gap. It is also important to remove any nails or other debris from the affected area to minimise the risk of future leaks and damage.

The epoxy or wood filler can be used to fix the remaining boards after removing the decayed wood. This is an easy and relatively cheap solution for fixing wood rot in timber windows, and can be easily sanded and then painted to match the existing frame.

If the rot is severe it may be cheaper to replace the entire window frame, especially if you want a long-term solution that will stop further water infiltration. It is also advisable to contact an expert wood window repair service to determine what alternatives are available to you.

Splicing or scarfing

Timber windows are a fantastic choice for older homes and listed buildings, but can also be used in new construction. While they're more expensive, they offer long-term advantages and add value.

They are extremely durable and can be made to any size. They are also simple to retrofit and offer excellent thermal performance. They require regular maintenance, particularly painting.

There are two main types of timber: hardwoods and softwoods. Hardwoods are deciduous broad-leafed trees with complex cellular structures. This gives them good stability in terms of dimensions. Softwoods however originate from needle-leafed or coniferous trees and have a much simpler cell structure.

Traditional structural joints in timber frames were made by mortices and Tenons or comb joints. These joints are pinched or nailed in place and are not bonded using adhesive. Over time, water ingress easily flows through the sections of wood, causing rot or staining. Poor craftsmanship can contribute to this. For example, fixings that are exposed or not properly punched in could cause moisture to penetrate the frame. This can lead to water deposits and rust stains on the window boards if it is allowed to happen.

It is not recommended to replace a timber sash windows repairing using uPVC, especially in historic or listed buildings. This can compromise the structural integrity of the building. uPVC is also a cheap material with a short life. It is disposed of in landfill.

Modern timbers such as Accoya and Red Grandis are treated and impregnated to ensure that they are able to withstand the effects of weather conditions and insects. If properly maintained and painted these windows can provide a lifetime of service. They can also be fitted with burglar-proofed glass, which increases the amount of force required to open the window and makes it more difficult to smash.

While replacing timber sash windows with uPVC may be cheaper initially, this is not a viable option for older or listed buildings, since it could damage the integrity of the building and violate planning permission. Furthermore, uPVC can be very drafty and have a short time before they begin to degrade and need replacement.

Filling in cracks or splinters

If you take care of your wooden windows, they can last for a long time. They can enhance the appearance of a structure, add decorative elements, and serve their most important function in keeping a property warm and dry. However, as with everything else, they can be prone to wear and tear when this happens it is essential to treat them and get restored.

Wood rot is the most prevalent problem that can affect windows made of timber and doors, and it's not just a case of replacing rotten parts. When the frame is damaged by rot, it could be difficult to repair. That's why it's essential to perform regular inspections of your wood windows, especially prior to winter comes around. They can be especially damaged by cold temperatures and the pounding rain.

When a window is taken down it's important to make an inventory of the condition of the frames and identifying any areas that are badly damaged. This will save you time and money, as the process of restoring it is much more straightforward. You'll save money by not needing to replace the entire window.

If you're looking to replace a damaged part of a window made of timber it is recommended to splice or wrap in a new piece matured wood instead of trying to repair the old one. This can be accomplished by either cutting away the damaged area at least 5cm beyond the point of rot, or by cutting off the entire sash and splicing a new piece.

The final step is to treat the wood with a suitable preservative. This is to prevent moisture from entering the wood, which can cause it to rot and weaken the structure of the frame. It is important to paint your windows on a regular basis in the event that you don't intend to treat them.

Most timber windows can be repaired by a handy DIYer. If the sashes are broken or windows repair the internal linings are damaged, it could be necessary for the window to be taken apart and rebuilt. A damaged counterbalance cord on double-hung windows is among the trickier problems to fix since it can only be repaired by taking the sashes off the frame and disassembling it.

Painting

A good paint job can do wonders for timber windows repairing repair (why not find out more). It can make them look new and fresh however, it can also keep them healthy by covering any signs of rot or other issues. Make sure that the wood is completely dry before you begin painting. Moisture can cause wet decay. Use a wood moisture meter in case you are not sure. Moisture may still be present even if the wood looks and feels dry to the touch, therefore it is important to know how to spot the signs that your window frames are still susceptible to wet rot.

It is a good practice to wipe the entire frame with a moist, soft cloth prior to beginning painting. This will remove any grease or oils marks. This will stop the spread of dirt and makes cleaning much easier. It is also advisable to remove the enfield window repair handles in the event that you have them and putting them to one side. This will make it easier to work with the frames without having to worry about breaking the glass.

Apply a thin layer of primer with a clean, dry brush when you are ready. This will give your surface a little more depth, and also prepare it for the final coat of paint. After drying, lightly sand it using fine sandpaper to create an even finish.

It is now time to apply the first coat of paint. Paint in a thin, even layer. After the paint is dry, sand the surface again gently before applying the second coat.

Repeat this process until your window is the desired colour and finish. It is possible to paint your timber windows every 6-10 year, depending on where they are and how much sun they get. Having a regular maintenance plan is a good idea to ensure that they remain in good condition and performing as long as possible.