edges and to the beam 22 the screw 64 is anchored in the wood ridge 30 between the reinforcing plates 32 foam seals 66 are provided between the mullion plate 62 and the glass in the panels 20 moisture received in the beam channel 24 continues on down the channel in the vertical beam 23 as seen in fig2 and is vented away at 68 as seen in fig7 as also seen in fig7 a condensation gutter 70 is provided that the lower end of the vertical front wall glazing panels 16 in fig6 it is seen how the glazing panels 20 meet the building 13 the upper edges of the panels are supported on a cross beam 72 supported on the building 13 a flashing 74 includes a downwardly extending rib 76 received in the perimeter frame channel 40 the flashing includes an l shaped portion 78 which extends upwardly and then along the panel downwardly from the rib 76 and includes foam 80 which sealingly engages the glass in the glazing panel 20 a forwardly extending flange 82 extends toward the building 13 and has a free end 84 received in a receptor 86 which includes a downwardly and forwardly extending flange 88 silicone grouting 90 seals the free end 84 of the flange 82 in the receptor 86 the gutter flashing 50 of fig1 is positioned below the perimeter frame with the rib 52.