Pre-drill holes (1/4-in diam.)
into each plank. (#10 stainless steel wood screws)
Method 2: Screws Invisible
Pre-drill holes (5/16-in diam.) into each plank.
Counter sink all holes (1/2-in.diam.) at a depth
of 3/8 in.
Apply screw caps (available as accessories)
to hide screws (flat screw caps are 1/2 in. diam)
OTHER
OPTIONS
1 - Tongue and groove
Pre-drill 7/32" diameter holes
Countersink
holes and use 2" length #8 stainless steel flat-head
wood screws
Leave
a space of 1/32" between each plan
2
- Brackets
Pre-drill holes (1/8-in diam.) into each plank at
a depth of 3/4 in.
Fit
planks with galvanized metal angles. Working from
under, secure planks to joists.
Tools
PERMA-DECK can be easily installed with conventional woodworking tools.
It is suggested to use carbide tip circular saw blades with fewer teeth
(18-24 teeth for 7 1/4'') as well as carbide drill bits.
Fasteners
Stainless steel screws are
required. Install 2 per end of board and alternate
in the middle
Pre-drilling is required on
all decking boards. Pre-drill with a hole overboard
to the next screw size (1/4" drill bit for #10 screws)
All fasteners should be placed
no closer than ¾" from any edge
The uses of adhesives is not
recommended
Design
considerations
PERMA-DECK will expand and
contract approx. ¼" per 8 board feet over a wide range
in temperature. Design considerations should allow
for this movement
When framing, the end of each
PERMA-DECK decking board must be on a full joist
Before installing PERMA-DECK
on your wood frame, make sure the frame is fully dried,
leveled and squared
If you need to notch a PERMA-DECK
deck board around a post you must only use " L" notch.
The board can be no longer than 4 feet and you must
have at least a ¼" gap at the post
Click
on image to enlarge
Spans
The maximum decking span is
12" on center for 1" thick boards and 16" on center
for 5/4, 2x6 and Tongue and groove boards at 90 degrees
of the joist. For conventional designs with proper
support systems, consult PERMA-DECK span chart for
specific guidance
Abnormal boarding on the deck
surface with large planter, hot tubs, etc. may require
shorter spans and/or additional sub-structure supports
If installing on a 30 or 45
degree angle, call your distributor for design considerations
