Although the need for flashings at external door and window heads is generally well understood, there is not the same understanding about the need for flashing at garage door heads.
Building consent authorities are receiving applications for building consents in which garage door head details do not follow the same requirements for flashing as for other door and window head details.
Flashing needed for garage doors
The requirements for flashing garage door openings are simple. They are the same as for external door and window details.
Acceptable Solution E2/AS1 to Building Code clause E2 External moisture is quite prescriptive in terms of head flashing profile when used as a means of compliance.
Figures 1–3 are details based on E2/AS1 principles for both direct-fixed and cavity construction bevel-back horizontal weatherboard cladding and where an infill panel is used with masonry veneer cladding.
