
1) Applies shingles 2) Applies shingles to 3) Building topper 4) Building tops 5) Car tops 6) Chimney neighbors 7) City garden locations 8) Edifice tops 9) House toppers 10) House tops 11) Housetops 12) Landing pads for Santa 13) Landing spots for santa 14) Landing strips for Santa 15) Lays shingles 
Found on 
https://www.crosswordclues.com/clue/roofs

Roofs is slang for valium.
Found on 
http://www.probertencyclopaedia.com/browse/ZR.HTM
  No exact match found.