EB-TY®: Hidden Deck Fastening System
The EB-TY provides a unique method of fastening deck boards that
makes the fasteners virtually invisible. Fastening is done into the side
of the board, leaving a fastener-free deck surface.
The EB-TY is a polypropylene biscuit fastener that fits into a slot the
builder cuts into the edge of the deck boards with a standard biscuit
joiner. The EB-TY fasteners are inserted and fastened with a screw
driven into the joist. Nesting each successive board against the
EB-TY automatically ensures consistent spacing and uniform height.
Find it in the Fastener Finder
Working from left to right, compare the information in the
columns to your application
- Easy to install since all fastening is done from the top side
- Affords easier deck resurfacing since nail heads are
eliminated from the deck surface
- Formed from long lasting polypropylene to last
the life of the deck
- Stainless-steel #7 trim-head screws included
- Each EB-TY package includes installation instructions and enough
EB-TY fasteners, screws and tapered Ipê wood plugs to install
100 square feet of decking (175-Pack quantity assumes 6" wide
boards, installed perpendicular to joists spaced 16" on center)
to select the correct EB-TY for the job.
For complete installation information, see the technical bulletin EB-TY® Hidden Deck Fastening Systems: Installation Instructions (T-F-EBTYINSTL14)
- As with all decking materials, please
consult manufacturer's installation
instructions for deck height requirements
and deck board spacing.
All slots for the EB-TY's (except for the
316TT) can be cut using a #20 setting with
a biscuit cutter/plate jointer or router with
5/32" slot cutter. Decking can be grooved the
entire length of the board.
- Always butt boards over a joist. One method
for installing butt ends is to cut the keel off
the bottom of an EB-TY, slot the board ends,
and insert the EB-TY. Another, more reliable
method is to face-screw and plug.
Construction adhesive is not
recommended when installing
composite deck boards as some
adhesives will have an adverse
reaction upon contact with
If you have questions about which EB-TY
to use, contact Simpson Strong-Tie.
- Fasten the first board using construction adhesive and screws, then cut
slots where the board intersects joists using a 5/32" router bit or plate joiner
(biscuit cutter #20) and install the first EB-TY fasteners. Do not use
construction adhesive with composite decking (see note on the right).
- Cut slots in the next board where it intersects the joists.
- Apply a bead of construction adhesive to the top of each joist and install the new
board so that the slots fit over the EB-TY fasteners installed in the first board.
- Insert EB-TY fasteners into each slot in the exposed
edge of the board and fasten with screws.
- Repeat the process until all boards are installed.
Refer to the installation instructions (included) for more
information. Consult composite decking manufacturer's or
wood supplier's installation instructions for deck height
requirements and deck board spacing.
Pre-grooving the entire length of the deck board is a
time-saving alternative to individual grooves made with
a router or plate joiner. Some types of composite lumber
are available with grooves as an added feature. Have your
lumber yard use the schematic on the right to pregroove
boards to accept EB-TY fasteners.
*For model numbers TP015 and 316TT screws are to be driven at a 90° angle to the board face.
Bring the schematic below to your lumber yard. They will use it
to pre-groove your decking material to accept EB-TY fasteners.