Is it necessary to remove the ‘A’ pillar trims when replacing a windscreen. For most older, rubber fit windscreens: probably not. However, if you were replacing a bonded windscreen by the book, most definitely: yes.
Windscreen replacement is evolving at a rapid rate. This evolution however, is focusing on a fast fit culture to save time and money. So why is it important to remove the ‘A’ pillar covers, or trims?
Removing the windscreen: the trims are very close to the bond line. When cutting through the cured polyurethane – and whichever cutting method is used – there is risk of damage to the trim, or the trim covering. Some trims may even be touching the polyurethane [PUR] and have adhered to the moulding, or fabric covering.
When fitting – or replacing – the windscreen, it is good practice to check for good contact by shining a torch up and down the ‘A’ pillars from inside the car. This is almost impossible to do with the covers in place. Also, if there is any ooze, you can tidy this up to prevent contact with the pillar trims.
A lot of firms and fitters are using trim protectors to prevent damage to these items, and the advent of fibre cutting wires has further reduced this risk. It does not however mean that the next time the windscreen is replaced any damage will be avoided as there is no emphasis on checking for proper contact; how can you, when it is behind a cover?