DECK LAYOUT / 01
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Deck dimensions UNIT: m
m
m
Board settings CUSTOM
mm
mm
mm
mm
Layout rules
Board ends must not butt directly together. Place joints at a perpendicular breaker board, with each board end supported. Picture-frame corners are shown with 45° mitres; use double joists or equivalent support where border boards meet the field at right angles. Check the selected board manufacturer's instructions.
Board ends must not butt directly together. Place joints at a perpendicular breaker board, with each board end supported. Picture-frame corners are shown with 45° mitres; use double joists or equivalent support where border boards meet the field at right angles. Check the selected board manufacturer's instructions.
Deck layout plan
7200 × 4200 mm · TOP VIEW
Deck board
Breaker board
Support joist
Expansion clearance
DECK AREA
30.2
square metres
STOCK BOARDS REQUIRED
40
deck and breaker cuts · no extra waste allowance
BREAKER BOARDS
1
divider lines · stock included in total
JOISTS
20
support lines, estimate
Layout summary
Board directionAlong 7200 mm long side
PatternStandard layout
Picture-frame rails (per course)—
Corner detail—
Field run lengths5400 + 1800 mm
Breaker positions from field edge5400 mm
Segments per run / joints2 segments / 1 breaker board
Board courses30 courses
Joist spacing≤ 400 mm
Frame and breaker-board supportBoard ends stop at a divider or border board; they do not butt directly together. Add subframe blocking beneath each breaker board. Use double joists or equivalent support where picture-frame boards meet the field at right angles. Where dimensions allow, plan around full stock lengths or 1.8 m / 2.7 m cuts to use 5.4 m stock efficiently; avoid random staggered butt joints.
45° MITRED CORNER · TOP VIEW
The deck's outside corner stays square. Both perpendicular frame boards are mitred so the diagonal joint runs from the outside point to the inside corner.
Planning checks
Maximum joist spacing400 mm
Board gap6 mm · project setting
Joint detailBreaker board
SubstructureIndependent, stable support required
Expansion gaps depend on board length, installation temperature, sun exposure and site conditions. This is a material and layout concept; verify the selected board manufacturer's installation guide and the site structure before building. Do not fix composite decking directly to a solid surface such as concrete.