How to Install a Car Windshield Step by Step?
2 Answers
First, use a flat-head screwdriver to slowly remove the black protective strips around the windshield, then remove the wipers and the protective cover under the front windshield. Thread a wire through the sealant beneath the windshield and gently pull it apart until all the sealant around the entire windshield is loosened. Use a small blade to carefully scrape off the black sealant remaining on the car, then use sandpaper for final cleanup until the metal frame's color is exposed. Wipe off any dust around the newly purchased windshield with a cloth. Apply the purchased polyurethane sealant to the frame of the car windshield.
Last month I replaced my windshield myself, and the process really couldn't be rushed. When removing the old glass, you need to slowly cut the adhesive with a specialized cutting tool – if you deform the metal edges of the roof, you're in trouble. Cleaning off residual adhesive is meticulous work; scraping too hard can damage the paint. The key step is applying the new adhesive layer – using high-viscosity polyurethane sealant to squeeze out an even serpentine bead along the frame, with precise control over the amount. Even a single drop leaking can cause water ingress. It's safest to have two people supporting the glass while slowly fitting it into the frame – you only have a few seconds to adjust the position. After pressing the glass firmly, immediately secure it with strong tape from the roof to the hood. If not properly secured, the glass could fly off at highway speeds. The most easily overlooked aspect is drying time – I waited a full 48 hours before touching the glass. Washing the car or sudden braking during this period can compromise the seal.
