Greetings! Sent here from John Bridge forums...... Lifeproof over mostly concrete. (Had ground level after nightmare with Home Depot installers who came ill prepared. (Grinder was great, wise and made house good) Ive got about 25sf of toilet area and the same for laundry. Both razor thin vinyl sheet (builder grade crap) and gonna lay over that. Curious about chamfering edges at the thresholds and again right up against bathtub where portion has lifted. How angled/wide a chamfer at thresholds and cut an inch or so the length of the tub. Or cut just that section and fill?? Thanks so much fir any advice!!