ROOFING, VENTILATORS, AND ANTI-CONDENSATION LINING. 



29 



One Layer Sheathing Paper, 



Two Plies Tarred Felb, - 



. _- _.- 



0) SLATE ROOF 



Pitch 

 --Paper 

 ~~5heathiny 



Section A- A 

 (2) TAR AND 6RAVEL ROOF- 



For 30 and Apron Me ka, 

 over, use N-??0 3 ^ ut 



9*9*' 



UnderZO 



Variable- 



.-\ J^/Biam- oF Stack 

 K--- --->! Diam- of Flashing 



\ 



(3} CIRCULAR VENTILATOR 



--f 



^j Give pitch 

 5: oF RooF on 



91 



^ Ventilator 

 Detai/s- 



Apron and 

 Flashing shipped 

 in 2 or more 

 pieces, depend- 

 ing on the size* 



(4) STACK FLASH INS 



YYYYYYYY 



T YYTYYY Y WI9 Galv Wire Netting 

 wvVvvv\ >!'..!. , , . -XA 



mesh, laced with 

 N?- 20 Brass Wire- 

 14 Ib- Asbfstos Paper- 

 6 Ib- Asbestos Paper- 

 \/\, Two thicknesses of 

 J^J Neponset Bldg- Paper- 

 Corrugated Stee/- 



(5) ANTl- CONDFHSA TIOH ROOFIH6 

 BERLIH SYSTEM 



50 Ib- Asbestos 

 Paper- 

 Corrugated Sheeting 

 Use I"*4**j" Clips 

 2 '0 centers, mid tray 

 between Purlins- 



(6)AHTI-COHDEHSATION ROOFING 

 MINNEAPOLIS SYSTEM 



J 



FIG. 23. DETAILS OF ROOFING, VENTILATORS AND ANTI-CONDENSATION LINING. 



