Why Repair Timber Windows Isn't As Easy As You Think
How to Repair Timber Windows
Timber windows require regular maintenance to ensure they remain functional, and free of swelling or rotting. Sash windows that are not treated or poorly maintained can be susceptible to rattling and sticking.
Check for rotted areas on the window frame. If the rot is extensive it could be worth replacing the entire frame.
Examine the Condition
Wooden windows are an important element of a lot of homes, providing an appealing natural look and a great deal of security. They are vulnerable to deterioration and damage. The condition of the timber windows, including sashes and frames should be inspected regularly to ensure they continue to perform in the intended manner.
One of the biggest issues facing timber window frames is the rot. Wood rot is caused by excessive exposure to water which can cause the wood to become soft and spongey. The good news is, it is treatable with patience and effort.
The first step in assessing the condition of your wood windows is to search for signs of damage or rot, such as cracks or loose parts. It is also important to check the weather stripping on the windows to ensure that they're properly sealed and preventing water infiltration.
It is important to check for softness in the event that you spot any signs of rotting. You can do this by pressing them down with a screwdriver, or even your finger. Solid, healthy wood will be able to withstand this pressure, while rotting wood will give way easily. It is important to keep in mind that when the rot has spread to more than 10 percent of the frame it's better to replace it rather than making repairs.
After the damaged portions of the timber have been treated, it's now time to sand them down. Start with coarse-grit paper and then move to finer grits. This will ensure that the repaired area blends seamlessly into the remainder of the window. After sanding the damaged area it is possible to prime it, then painted to hide the repair.
In some cases, if the rotting is serious and the timber is not strong enough to be repaired, it may be necessary to put a lintel inserted over the window. This is a structural beam designed to support the wall's weight above the cavities where the frames of timber sit. A structural engineer could install a lintel to prevent the decay and decay of older windows made of timber.
Remove the Glass
It is easier to deal with the broken glass when you take the window from the frame. This makes the job simpler. You'll want to shield yourself from sharp glass shards by wearing gloves and using a towel to wipe out each piece of glass. If you choose to save some shards then wrap them in newspapers and dispose of them with care.
After you have removed the glass, you should check the condition of the wood. Use a damp sponge or a cloth to wipe down your window's frame as well as the sash and any vents. It's time to begin removing the grime and dirt when there's plenty. It is important to avoid putting solvents or chemicals in the frame or sash as this could cause damage.
It is best to replace any damaged parts when you see any signs of rust or corrosion on the hardware. This can improve the appearance and function of your windows, and also prevent them from jamming or squeaking during use.
Make sure that the frames and hinges are in good working order, that they move freely, and that there's no visible signs of rot on the frames. If the hinges and sashes become difficult to open or close it's usually a sign that they're worn-out or out of alignment, and need to be re-adjusted.
A majority of window problems are the result of weather and moisture. Moisture uptake can cause local stress at the joint that is exposed to the gluing, which can cause them to open and let in moisture. Staining from moisture could be the result too.
Fortunately, modern timbers like Accoya and Red Grandis are able to withstand more damage than traditional timbers which is why it's a good idea to check with your chosen joinery supplier to see which timber they offer. It is crucial to select the right wood as different kinds of wood expand and contract at different speeds. Using the wrong type could cause damage and reduce the life expectancy of your timber windows.
Removing the old Putty
Wooden windows are a common feature in older buildings. They can be fixed to look stunning and serve their purpose in letting light in, blocking out rain and providing insulation. If they are not maintained, timber frames can be susceptible to wood rot, and, once this happens, the strength of the window is compromised and a replacement could be required.
The first thing to be taken care of is to thoroughly check the condition of the frame and glazing putty (the material that holds glass panes to the wooden sash). It might not be possible for large pieces of wood to be saved, but they can be repaired and spliced to keep the remainder of the window functional.
If you decide to go by making repairs, the next step is to take the sash from the carrier and put it on a level surface, such as a workmate. It is recommended to remove the handle and seals at this point as well so that you can inspect their condition.
There are many products that can be mixed with raw Linseed oil to break up old putty. This is applied liberally on the old putty and let it sit for about 15 or 20 minutes before scraping the surface with a razor blade or chisel. It is typically necessary to repeat the procedure several times to completely eliminate the old putty.
After you have removed the old putty, you'll need to thoroughly clean the frame and window to stop moisture from entering. This could include sanding, stripping paint using gel-type removers, or cutting out rotten timber sections and splicing fresh ones. If a splice has to be made, it should first be protected with a paint, and then painted.
After all the old putty has been removed, it is time to apply some fresh glazing putty to the window. A good-quality Linseed oil is recommended as it will be easier to sand and provide an attractive finish to the window. Before applying the putty it is recommended to roll a small amount out and form the "sausage" shape that is easy to apply and tidy in appearance after being placed on the window frame.
Reattaching the Glass
Wooden windows are a long term investment for your home and must be maintained regularly. If you don't take care of them for too long the frames will begin to decay and cause damage to the structure, security and insulation of your house. Repairing windows is usually cheaper than replacing it.
If a piece of broken glass is found and it is repaired by using the appropriate size glass. The old glass should be removed first, and then the new glass put in. window repairs is easier if you can remove the window from its casing. It can then be clamped on an object with the caulked side of the window facing upwards or inserted in a frame that has been opened and secured shut and closed.
The sash is secured using putty, or (in older timber windows) panel pins. When repairing an old historic window, it is important to choose materials that are similar in appearance, so that repairs don't stick out as a sore thumb. Modern caulk products aren't suitable for homes with historic architecture and should be avoided.
It is also essential to ensure there are no traces of putty or paint in the rabbet grooves where the glass is set in the sash windows; they will block the glass from sizing correctly. Check for obstructions around the sash or in the window frame. This could lead to a leak.
A piece of clear tape or concealing tape could be placed over the crack to keep it in place and to stop water from entering a gap that might develop. If the glass is in danger of being detached from the sash, a solvent-based glue for glass can be used to fill in the crack and keep it in place.
If the casing and sash are in good working order and draughts are not a problem, they can be addressed by cleaning, lubricating and painting. If you're not confident in tackling these basic maintenance tasks on your own and are looking for a joiner or company who specialize in overhauling timber windows could be able to help.