How to Fix a Vinyl Window That Won’t Stay Up: A Comprehensive Guide

Dealing with a vinyl window that refuses to stay open can be a frustrating experience, but it’s often a problem that can be easily remedied. Whether you’re a seasoned DIYer or a homeowner tackling this issue for the first time, understanding the common causes and the steps to fix a window that won’t stay up can save you time, money, and a lot of headaches.

Identifying the Issue

The most common culprit behind a vinyl window that won’t stay up is a problem with the window’s balance system. These systems, which can include spiral balances, block and tackle balances, or constant force balances, are designed to counteract the weight of the window sash and allow it to move smoothly up and down.

Over time, the components of these balance systems can become worn, disconnected, or even break, leading to the window’s inability to stay open. Identifying the specific issue with the balance system is the first step in fixing the problem.

Troubleshooting the Balance System

To begin troubleshooting, you’ll need to tilt the window sash inward to a roughly 90-degree position. This should allow the sash to release from the jambs, giving you access to the critical components.

At the bottom of each side of the sash, you’ll find the pivot bars. Inspect these bars for any signs of wear, damage, or twisting. If you find any issues with the pivot bars, you’ll need to remove the damaged part and replace it with a new one, which you can typically purchase from a local window supply company.

If the pivot bars appear to be in good condition, the issue may lie with the shoes, which are located inside the jamb grooves on both sides of the window. These shoes should be positioned about halfway up the jambs, where the open sash would typically sit. If one or both shoes have slipped down to the bottom or are positioned too low, they may not be properly connecting with the pivot bars, causing the window to fall shut.

To fix this, use a flat-head screwdriver to turn the U-shaped slot in the shoe so that it faces sideways, then slide the shoe up to the proper location. Once it’s in place, turn the slot back to the locked position to secure the shoe.

If a shoe is broken instead of simply out of position, you’ll need to pop it out of the jamb with the screwdriver and replace it with a new part from a local supplier.

Addressing Internal Mechanism Failures

In some cases, the issue may not be with the pivot bars or shoes, but rather with the internal mechanisms of the window itself. If you’ve checked these components and haven’t found any obvious problems, it’s possible that the internal balance system has failed and the window will need to be replaced.

This is typically a more complex and costly repair, as it may require replacing the entire window unit. However, it’s important to note that this scenario is relatively rare, and most issues with a vinyl window that won’t stay up can be resolved by addressing the balance system components.

Preventive Maintenance

To help prevent future issues with your vinyl windows, it’s important to perform regular maintenance and inspections. This includes:
Cleaning the window tracks and jambs to ensure smooth operation
Lubricating the balance system components, such as the pivot bars and shoes, to reduce wear and tear
Checking the balance system for any signs of damage or wear, and addressing issues promptly
Considering replacing the balance system components if the window is older or has been used extensively
By taking proactive steps to maintain your vinyl windows, you can help extend their lifespan and reduce the likelihood of encountering problems like a window that won’t stay up.