▁are ▁used . ▁ ▁The ▁top ▁linking ▁t iles ▁are ▁the ▁mon k ▁t iles ▁and ▁the ▁lower ▁layer ▁are ▁the ▁nun ▁t iles . ▁Mort ar ▁is ▁often ▁used ▁under ▁the ▁mon k ▁tile ▁to ▁firm ly ▁attach ▁it ▁to ▁the ▁nun ▁tile ▁as ▁well ▁as ▁providing ▁an ▁extra ▁se al ▁against ▁entry ▁of ▁rain , ▁but ▁it ▁is ▁sometimes ▁omitted . ▁The ▁origin ▁of ▁the ▁name ▁is ▁unknown , ▁but ▁is ▁also ▁known ▁as ▁Pr ie pend ach . ▁ ▁This ▁style ▁of ▁roof ▁was , ▁along ▁with ▁im bre x ▁and ▁t eg ula , ▁developed ▁in ▁ancient ▁times , ▁and ▁is ▁popular ▁around ▁the ▁Mediter rane an , ▁France , ▁and , ▁during ▁the ▁Middle ▁A ges ▁it ▁was ▁also ▁popular ▁in ▁German ic ▁Europe , ▁but ▁was ▁later ▁replaced ▁by ▁Bib ersch w anz ▁(" be aver ▁tail ") ▁roof ing , ▁although ▁is ▁still ▁occasionally ▁used , ▁particularly ▁for ▁old ▁and ▁sacred ▁buildings ▁( which ▁would ▁have ▁originally ▁had ▁Mon k ▁and ▁N un ▁roof s ). ▁ ▁In ▁modern ▁times ▁this ▁style ▁is ▁popular ▁in ▁the ▁American ▁south west ▁where ▁it ▁is ▁called ▁Pan ▁and ▁Cover ▁or ▁Mission ▁Style . ▁An ▁easier - to - install ▁variant ▁called ▁S - T ile ▁is ▁essentially ▁the ▁synth esis ▁of ▁a ▁pan ▁tile ▁and ▁a ▁cover ▁tile . ▁ ▁Gallery ▁ ▁Category : Ro of ▁t iles ▁Category : T er rac otta ▁Category : An cient ▁Roman ▁pot tery ▁Category : An cient ▁Roman ▁architect ural ▁elements