Window reglazing might sound straightforward, but it’s a task that demands time, patience, and precision. At GI Glass, we’re often called in to fix jobs done poorly by handymen or low-cost glaziers who try to cut corners. One of the most common issues? Improper putty removal.
If you’re considering reglazing yourself – or just want to ensure your tradesperson is doing it right – here’s how the process should be done.
Step 1: Gather the Right Tools
Before starting, make sure you have everything you need:
Putty knife or chisel
Heat gun or hairdryer
Safety goggles and gloves
Drop cloth or protective covering
Glass cleaner or vinegar solution
Having the proper tools helps ensure safety and efficiency throughout the window reglazing process.
Step 2: Soften the Old Putty
Use a heat gun or hairdryer to gently heat the putty around the windowpane. Move the heat source slowly along the line of putty to soften it without damaging the glass or wooden frame. Avoid holding heat in one spot too long – overheating can crack the glass.
Step 3: Remove the Old Putty Completely
Once softened, carefully work a putty knife between the old putty and the window frame. Gently pry it away in sections, applying steady pressure. For stubborn areas, reapply heat and continue scraping. It’s essential to remove all old putty – leaving any behind compromises the new seal’s integrity.
Step 4: Clean and Prep the Window
After removing the putty, clean the surface thoroughly using a commercial glass cleaner or a mix of water and vinegar. Let the area dry completely before applying fresh putty. A clean, dry surface ensures a strong, lasting bond.
Why Proper Putty Removal Matters
Unfortunately, we often see reglazing jobs where old, brittle putty is left behind, and the new glass is simply forced into place. This shortcut not only affects the appearance but also causes leaks and poor insulation – and that’s when we get the call to fix it.
When it comes to window reglazing, quality matters. A proper reglazing job will extend the life of your windows, improve energy efficiency, and enhance the overall look of your property. Not sure what tools you need to start you reglazing project? Here’s a complete list from Bunnings Warehouse.
Need Help With Reglazing?
Whether you’re restoring a heritage window or just replacing a single pane, GI Glass provides expert window reglazing services across Auckland. We do it right the first time – no shortcuts, no surprises.
