Window Sash Repairs

Many homeowners don't care about window sashes -- insofar as they can be closed and opened, they keep outside air out and the inside air in. As time passes window sashes may wear out and cause drafts, air leaks, or even stuck sashes.

The author uses an sash propped up on an easel for working glazing points into the gap. He also scrapes paint off the frame and then applies a wood preserver.

Sash Weights

If windows aren't opening or closing with ease or are sagging, a faulty counter-balancing system could be at fault. This can occur because of a broken or damaged sash chain or cord or an unattached or misaligned sash weight, or a broken pulley.

The sash weights are tiny boxes, typically constructed of cast iron that support the sash and balance the window's counter-weight system. The sash weights are located on the bottom rails of every window frame. They are protected by an unfinished wooden panel that can be removed to reveal their position. These panels can be removed for access to the sash weight pockets for cleaning, repairs or replacement.

If you've had sash windows for some time, you may have a problem with the sash weights, which cause them to lean or catch. The weights may be too heavy (they should be a little heavier than the top sash) or installed in a way that isn't correct.

To fix this problem take out the stops (the trim that runs along the inside of the window at the point that it joins the frame to keep it in position). Put them away. You'll need to do this gently so as not to damage the profile of the meeting rails. You can then employ a mallet or hammer to break up the stiles from the rails and examine them for damage or for any repairs that need to be done.

After you've checked the stiles and rails lay down some dust sheets and begin working on the sash itself. Begin by removing the wood pegs with a pin-punch and hammer or screwdriver from the mortise-and-tenon joints. Once the pegs are gone you can begin disassembling the sash by taking out the stop moldings for sash as well as removing the sash cord knots that are in place, and finally, taking the double glazed sash windows off itself.

Next you will want to weigh the sash and figure out how much weight is needed for its proper functioning. You can purchase vintage replacement sashweights online or in some home improvement stores. Be sure to get the correct size to avoid over - or under-weighing the sash.

Sash Cords

double glazed sash window cords that are worn or broken can cause problems with sash windows. The weights put pressure on the sash cords and this can cause them break over time. If the cords break, sashes will no longer open and close easily. The problem may be caused due to excessive force, aging or a lack of maintenance or the accumulation of moisture. During window sash repairs, it's important to replace the old cords with new ones that are constructed from materials that last and resist moisture.

Begin by removing the inner stops and the thin strips of wood that hold the sashes in place using a knife or a Chisel. Take care to remove the stops of the sashes while keeping an eye on any that are cracked or broken. After removing the stops, you can access the sashweights by opening up the jamb or taking out the weight pocket.

Accessing the sash cords takes a little more work however it's not too difficult with the right tools and patience. Remove the old cords first by cutting them in their knots and then pulling them out. Remove the sash and set it aside. When the sash is removed then pull it back down on the staff bead (the nail that stops the sash window restoration from falling) and then insert a nail about 1 foot into the hole in the staff bead. This will temporarily stop the sash from slipping away while you finish stringing the counterweights.

Reattach the sash strings following reinstalling upper sash. Check that the sashes move in a smooth manner and are balanced. Reinstall the lower sash and repeat the procedure. Make sure that the sashes are properly set and are moving smoothly.

After you've installed the counterweights, reattach the sash cords, by inserting a sash cord through the pulleys and threading the cord's other end through a knot hole inside the sash to secure it in the correct position. Repeat the procedure for each side of the sash until all the cords are replaced and the sashes are operating normally again.

Drafts and air leaks

As time passes, the materials that secure sash windows to your frame of your home deteriorate which can cause drafts and loss of energy. A thorough inspection will reveal the areas of concern and assist you in determining your window sash repairs options. Your comfort level and skill level will determine whether you can manage yourself or require assistance from a professional for window repair. The scope of work required is also affected by the historic status of the property and its structural strength.

When cold air sneaks in through a drafty window, your furnace has to work overtime to keep your house warm. This inefficiency eats into your heating costs and reduces the efficiency of your home's HVAC system. Drafts can also impact the quality of air inside and cause discomfort in the home by adding allergens, pollutant and humidity from the outside.

A drafty window can be identified by the feeling of cold air entering a room, even when all doors and windows are closed. Other indicators to look out for include an increase in the temperature of your home near the window and condensation around the frame or sill.

Fixing drafty windows can be a simple task, which can reduce your energy costs and increase your comfort in the home. First, look at the outside of the window. Look for bare wood and areas where the caulking is cracked, opening the gap to cold air.

Examine the upvc double glazed sash windows's interface to the frame including the parting beads and staff bead. Examine the condition of weather stripping (felt strips or foam tape) at these locations to determine if they are intact and functional. If not, it's going to need to be replaced.

Consider the condition of glazing putty. It's a hard putty used to keep panes of glass tempered in place. Look for cracks or crumbling that expose the sash to moisture which could cause mold issues and damage to the windows' glass.

To fix the problem, apply a bed of fresh glazing putty to the inside of your window. To secure the glazing points, use a flat-bladed screwdriver to push them into the right position. Then, wrap a piece of foam and a piece of fabric around each point to form an insulation agent against cold air.

Aesthetics

Window repair to sash can give older windows a new appearance for less than a complete window replacement. Particularly for homeowners with older homes, a complete replacement can be a big project, and a substantial cost. Repairing window sashes can be a great way to restore the original beauty of a home and value.

Monitoring the condition of your window sashes is important to prevent major issues. If you're not sure if your windows require repair it's a good idea to have them evaluated by an expert. The cost of a sash repair is typically cheaper than the cost to replace the whole window, and it can help save you money on energy bills as well.

First, lower the upper sash to the bottom. This is typically easy and allows you to observe the "parting beads", which are grooved bits on the meeting rails that keep the two sliding sashes separate. They can be removed using a blade from small pry-bars or a putty-knife. They are typically fixed in place and painted, so you must be careful not damage them or the sliding double glazed sash window.

After you've removed the parting beads, the next job is to remove the pockets. These are pieces of wood within the frame, low down which allow access to the weights for the sash and are typically nailed in place - they can also be stuck with paint, so it is important be cautious. After the nails are removed you can move the sash upwards and downwards to ensure it moves in a smooth manner.

If it doesn't, there could be an issue with the counterweights and cords for sash. After you've inspected them all, you can repair them if needed.

Wooden windows look beautiful and natural. They blend in well with modern or traditional interiors. The options for staining or painting are endless. However, wooden windows require regular maintenance to prevent damage and decay.