There should be no problem laying Pergo over the existing mastic tiles. I've had portions of my home professionally done (glue type) and later laid the rest of the house myself (click type) all over tile without any problems. Buy the installation kit and proper underlayment. If you have the time, visit your nearest Home Depot or Lowes and attend a demonstration for installation of laminate flooring products. There are a few tricks to learn that will not be in the video. ... View related article.
I live in Hawaii and used a product called MX-7 (for glass) on an old truck that had years of hard water spot buildup on all the exterior glass. It took the hard water spots off with little elbow grease. When my son bought a place in Las Vegas a year ago, I looked all over the valley for this product but couldn't find it. I finally found it at one of the local hardware stores (Ace). They just started carrying it. ... View related article.