Detailing garage door jambs

By - , Build 141

Many new houses include an attached garage. Getting the garage door jamb detail right for brick veneer can be tricky, but here are two options.
Figure 1 Detail 1 – Step 1.
Figure 2 Detail 1 – Step 2.
Figure 3 Detail 1 – Step 3.
Figure 4 Detail 1 – Step 3.
Figure 5 Detail 2 – Step 2.
Figure 6 Detail 2 – Step 3.

IN HOUSING, THE GARAGE FLOOR LEVEL is typically at the same level as the adjacent habitable spaces since there is no requirement within the Acceptable Solutions for a set-down.

Difficulties can arise where the slab to the habitable spaces is constructed to meet the minimum heights above paving or ground specified in E2/AS1. This has flow-on effects for:

  • weatherboard or other lightweight claddings to ensure the cladding clearances to the outside ground or paving level are maintained, particularly adjacent to the garage door
  • masonry veneers to ensure:
    • cavity drainage is maintained
    • water from outside cannot run into the cavity at the base of the garage door jambs or trims
    • the slab set-down specified in E2/AS1 of at least 50 mm is achieved.

Where a garage slab is at a lower level (50–150 mm) than the remainder of the building, the potential issues are exacerbated, particularly on a flat site.

Figures 1–3 and 4–6 outline the construction steps for two jamb detail options.

Figure 1 Detail 1 – Step 1.
Figure 2 Detail 1 – Step 2.
Figure 3 Detail 1 – Step 3.
Figure 4 Detail 1 – Step 3.
Figure 5 Detail 2 – Step 2.
Figure 6 Detail 2 – Step 3.

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Figure 1 Detail 1 – Step 1.
Figure 2 Detail 1 – Step 2.
Figure 3 Detail 1 – Step 3.
Figure 4 Detail 1 – Step 3.
Figure 5 Detail 2 – Step 2.
Figure 6 Detail 2 – Step 3.

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