Fig. 1
Breaker Boards
Breaker or boarder boards (boards laid at 90° to the rest of the
deck) can be used to create a boarder around the deck and
will aid in controlling expansion & contractions. Blocking will
need to be used to support the breaker board. At a maximum
spacing of 16" [407mm] O.C. The breaker board will need to
be surface mounted to the blocking with composite screws.
As shown in Fig� 2�
Note:
• Use a breaker board between long run boards to assist
mated expansion allowance between 2 fixed points in a cooler climate.
• Breaker boards must be supported by joists or blocking.
• Where breaker boards cannot be used, double joists must
"
• Joist spans should be altered in cases where boards are
20` ( with expansion at 1/8" per side)
p
Fig. 2
8
Estimated expansion allowance between 2 fixed points in a
cooler climate 50°F-10°C bellow�
20` [6096mm] Deck Board
(With expansion at 1/8" [3mm] per side)
1/8" [3mm] Gap
in controlling expansion and contraction. This approach
has the added benefit of creating a more visually pleasing
aesthetic. Reference Supports & Spans section on page 14.
20` Deck Board
be used to support the butt joins. Use a minimum of two
fasteners per joist, evenly spaced and a minimum of
1-1/4" [32mm] from any board edge�
installed diagonally�
Breaker Board
Blocking
DECKING INSTALLATION : I-SERIES
TOP VIEW
20` [6096mm]
Breaker Board
Blocking
1/8" [3mm] Gap
1/8"
Gap
Breaker Board
Blocking
Joist