GLAZING AND 



About 3 per cent, favored 16 x 2O-inch glass 

 with the shorter edge parallel to the sash 

 bars, the bars in this case being 20 inches 

 apart. Glass 16 x 20 inches is undoubtedly 

 the most popular size. 



Methods of Glazing. Practically all 

 methods of glazing make use of putty to seal 

 the glass in place and to form an air and 

 water-tight joint. An exception is made 

 when some forms of metal bars are used. 

 With these, felt, candle wicking or some 

 similar material is usually employed, and the 

 glass is pressed firmly against it and kept in 

 place by bolts or clamps. Sometimes a lead 

 facing is used and the glass is clamped 

 against this facing. 



The great majority of houses are con- 

 structed with wood sash bars or bars having 

 wood cores with which putty is supposed to 

 be used. With these there are two common 

 methods of setting the glass. It may be 

 lapped or butted. 



Lapped Glazing. In lapped glazing the 

 lowermost panes in each run are laid flat 

 against the bottom of the grooves in the 

 sash bar. Each succeeding pane is then laid 

 so that its lower edge laps over the upper 



