Page 42 - Build 161

Figure 2
Aluminium window installation – head detail.
Figure 3
Timber window installation – head detail.
steel angle lintel sized to suit opening
100 mm seating for spans up to 2.0 m wide opening
200 mm seating for spans over 2.0 m long
sealant required between underside of head ashing and top edge of window head ange for VH and EH wind zones
aluminium window frame
timber reveal
exible ashing over opening, bedded in mortar joint and carried 200 mm beyond jamb line
50 mm minimum upstand
head ashing with 15° slope and stop-ended to edge of bricks
steel angle lintel sized to suit opening
continuous air seal over backing rod
timber head
40 — August/September 2017 — Build 161
wall underlay or exible ashing tape lapped over exible ashing
exible ashing over opening, bedded in mortar joint and carried 200 mm beyond jamb line (weepholes to be provided in course above the ashing)
insulation
exible ashing tape to ashing upstand
50 mm minimum upstand
head ashing with 15° slope and stop-ended to edge of bricks
continuous air seal over backing rod
wall underlay turned into window opening with exible ashing tape to corners
wall underlay or exible ashing tape lapped over exible ashing (weepholes to be provided in course above ashing)
exible ashing tape to ashing upstand
100 mm seating for spans up to 2.0 m wide opening
200 mm seating for spans over 2.0 m wide
5 mm gap between steel lintel and ashing
masonry veneer
5 mm gap
timber window