I had Vemex caulk 12 windows at my home. They were not able to remove my old caulking without damaging my aluminum capping, so they caulked over it with a wider bead. Workmanship is great and crew is friendly. I finally did a quick inspection and they really use a quality silicone caulk and push it in to all the openings. Found a couple empty caulking tubes and caps left behind on the property but besides this they did a good job!