Thanks for advice, although i think i know the answer. Vunerable family member had leak through porch flat roof. Wasnt local but got someone with decent reviews in who could do quickly. Told was degraded bitumen and needed rubber membrane repair, taking up and underlaying adjacent pitched tiles. Hefty price but she really wanted it doing quickly as torrential rain. Photos attached - issue is already looks like whole thing isnt glued properly - there looks to me like some lift on the right (although glued at edge cant get my fingers under it). Got bad feeling about the whole thing, charged her over 2k, looks sloppy, no trim (is that normal?) but i know nothing about roofing so any advice much appreciated to check she hasnt been taken advantage of. Oh and supposed to receive guarantee but nothing arrived so far. Thanks for any advice.