Methods for Installing Vertical Window Sliders

Vertical Sliders

• Sliding windows consist of two segments, one or both of which slide either vertically or horizontally. A vertically sliding window constitutes a “hung” window; in a single-hung window, only one section of the window moves up and down while in a double-hung window, both sections move. Old single- and double-hung windows use a simple rope and pulley system to slide on a track within the window frame. Hung windows manufactured in the 21st Century use spring-loaded metal balances to hold and balance them as you slide the window parts up and down within the frame.

Window Installation

• Vertical sliding windows come as prefabricated units with all parts already in place. Because of this, you will rarely install the sliding mechanisms themselves but rather just the window. Installing a vertical sliding window, sometimes known simply as a vertical slider, is a relatively simple process. Before installing a new window, you must ensure that it matches the dimensions of the existing window frame. If so, remove the old window and apply a layer of weatherproof sealant or caulk around the new window. Fit the new window into the frame then use a drill and screws or bolts to attach the window as instructed by the window manufacturer -- each window should come with an installation manual with instructions regarding fasteners, such as bolts and screws. Always follow the manufacturer's instructions when installing a new window.

Replacement Sliders

• Replacing an old or broken slider entails removing the old system and installing new, spring-loaded balances. Start this process by removing the sash, or moving part, of the window. Unhook the old system from the sash, which may entail cutting away ropes attached to the sash. Remove the sides of the window frame that hold the old sliders in place and take the old sliding system out with a drill or screwdriver. You can purchase replacement spring-loaded metal balances at a hardware store and install them in place of the old system by simply drilling one into either side of the window frame. This method may prove difficult on prefabricated vinyl windows because everything within the window unit is sealed together at the factory, which makes it difficult to dismantle.

Slider Considerations

• Installing a metal slider requires a few special considerations. For instance, manufacturers rate spring-loaded balances based on weight. Before purchasing your new sliders, weigh the sash so you know which type of slider you need for the window. Also, while pulley systems attach directly to sashes, spring-loaded balances require a hook. You can purchase a basic hook at a hardware store, attach it to the side of the window with a screw and loop the end of the spring-loaded balance over the hook. Use a lubricant grease or paste, when you reinstall the sash, to ensure that it moves freely, without friction.