Abstract: A window frame provided with a tapered sub-sill that is mounted on the wall and via a plurality of spaced spacers tapered in the opposite direction to support the main frame sill element in its substantially horizontal position. The use of the tapered sub-sill and tapered spacers permit the sealing membrane positioned between the wall structure and the wall facing to pass therebetween and provide a good seal and provide a solid base for the main sill. In the preferred arrangement, a snap in seal is connected to the outside bottom edge of the sill and forms a seal between the facing layer and the sill and provides a projecting flashing to redirect rain.

Abstract: An two-piece interlock for sliding window or door frame assemblies comprises a glazing bead secured to a sash frame for engaging a sealed glass unit; and an elongated seal having a T-shaped rail slidable to a limited extent within a longitudinal slot formed in the glazing bead. The seal extends between the sash frames when they are moved to closed positions. The glazing bead and seal on one of the sash frames together define an elongated slot for receiving a tongue formed on the other sash frame in the closed position. The sash frame carrying the glazing bead and seal is slidable to a limited extent relative to the seal to facilitate installation or removal of the sash frame from the outer window or door frame.