21.   Below the tiered roof, the exterior walls are intricately carved and colorfully painted in designs drawn from nature and the imagination of folk artists.

22.   A ceiling has been extended from the slab of the second floor to the exterior wall, closing up the space beneath.

23.   A permanent fix is to insulate the three exterior walls.

24.   Adorning exterior walls, floors, even dirt streets, these breathtaking filigrees can resemble Chantilly lace, Keith Haring characters, even Pennsylvania Dutch flowers.

25.   After the crew left, Kastler also found traces of the chemical splashed on the walls in the hallway of the Fellowship Hall and on exterior walls.

26.   All the exterior walls were panels of glass that could be opened.

27.   But court papers nffer a strong indication that the quality and stability of the exterior walls were suspect from the start.

28.   But everything is an exterior wall.

29.   But that yearlong survey also found that one out of four city schools had seriously deteriorated roofs or exterior walls, and two out of five had deteriorated windows.

30.   Cover holes in the foundation or exterior wall with concrete, sheet metal or other gnaw-resistant material.