TAMKO Tam-Shield Synthetic Underlayment - Manual

FASTENING
Do not use nails or staples without round plastic caps.
Fasteners must be long enough to penetrate at least
3/4 in. into the roof deck. Use only corrosion resistant nails
or staples with 1 in. round plastic caps. Fasteners must be
flush and at approximately a
90 degree angle to the roof
deck. Follow the nail pattern as
marked on the underlayment.
See illustration for details.
Fasteners on vertical and
horizontal laps must be spaced
8 in. on center.
For High Wind Application requirements: Fasten the
underlayment at the additional nail locations that are marked
as dotted circles on the underlayment. Fasteners on vertical
and horizontal laps must be spaced 4 in. on center.
For Low Slope Application: On pitches 2 in. per foot to 4
in. per foot, cover the deck with two layers of TAm-ShielD
SynTheTiC UnDeRlAymenT. Begin by applying the
underlayment in a 24 in. wide strip along the eaves and
overhanging the drip edge by 1/4 to 3/4 in. Place a full 48
in. wide sheet over the 24 in. wide starter piece, completely
overlapping it. All succeeding courses will be positioned to
overlap the preceding course by 24 in. if winter temperatures
average 25°F or less, TAmKO’s moisture Guard Plus
®
self-adhering underlayment or any specialty eaves flashing
product should be installed from eaves and rakes to a point to
at least 24 in. inside the interior wall line of the building.
FOR VALLEYS AND RIDGES
Center TAm-ShielD SynTheTiC UnDeRlAymenT in the
valley or over the ridge, working from the center of the valley
or ridge outward in each direction. For valleys, apply the
underlayment starting at the lowest point and work upward.
Overlap all sheets in shingle fashion a minimum of 6 in.
PROVIDE VENTILATION WHEN USING
OVER THE ENTIRE ROOF DECK
When using TAm-ShielD SynTheTiC UnDeRlAymenT
over the entire roof deck the roof must include a system to
provide adequate ventilation for all space immediately below
the roof deck. Such ventilation system should be designed in
accordance with architectural design standards appropriate
to the size, nature, and location of the structure and must
include both ridge and soffit venting. For further information
on providing adequate ventilation, contact your architect,
building contractor, building materials supplier, or TAmKO.
it is the responsibility of the installer to ensure installation is
completed according to directions, and that all construction
by-laws and codes are met.
SAFETY PRECAUTION
Personal fall protection devices, safety glasses and
hearing protection should always be used when applying
TAm-ShielD SynTheTiC UnDeRlAymenT. moisture,
frost or debris may decrease the traction while walking on
TAm-ShielD SynTheTiC UnDeRlAymenT. PleASe
eXeRCiSe CAUTiOn DURinG inSTAllATiOn.
USES
TAm-ShielD SynTheTiC UnDeRlAymenT is intended
to perform the functions of an underlayment when installed
between the roof deck and the shingles or other final roof
covering. TAm-ShielD SynTheTiC UnDeRlAymenT will
not prevent wind driven rain from entering the building nor
should it be used as the primary roof covering. The final roof
covering must be installed before the structure is exposed to
adverse weather conditions, such as wind driven rain, high
wind, hail, ice storms, etc. Failure to apply TAm-ShielD
SynTheTiC UnDeRlAymenT properly and according to
TAmKO’s Application instructions could adversely affect
coverage under the applicable limited Warranty. TAm-ShielD
SynTheTiC UnDeRlAymenT is not adversely affected by
UV rays for up to 180 days.
SURFACE PREPARATION
Apply TAm-ShielD SynTheTiC UnDeRlAymenT when
the deck is dry. To begin, remove any dust, dirt, loose nails
or other protrusions from the deck of new roofs. Remove all
shingles, roofing felt, nails, or other existing roofing materials
and debris from the deck of existing roofs.
Before walking on the underlayment surface, the TAm-ShielD
SynTheTiC UnDeRlAymenT must be securely fastened to
the roof deck using corrosion-resistant nails or staples with 1
in. round plastic caps. Fall protection
devices should be utilized.
moisture, frost or debris may
decrease the traction while walking
on TAm-ShielD SynTheTiC
UnDeRlAymenT.
FOR ROOF DECKS
Apply TAm-ShielD SynTheTiC
UnDeRlAymenT from low to high
in shingle fashion so that laps will
shed water. Overlap edge seams
3 in. as marked on the underlayment. end seams must be
overlapped 6 in. and staggered. The underlayment must be
laid out flat with printed side up without wrinkles and fastened
to a smooth dry surface. Care must be taken not to damage
the surface of the underlayment. DO nOT stretch during
installation.
©2013 TAMKO Building Products, Inc. TAMKO is a registered trademark of TAMKO Building Products, Inc.
TAM‑SHIELD
®
SYNTHETIC UNDErLAYMENT
THESE ARE THE APPLICATION INSTRUCTIONS FOR TAM‑SHIELD SYNTHETIC UNDERLAYMENT. TAMKO BUILDING
PRODUCTS, INC. SHALL NOT BE RESPONSIBLE FOR LEAKS OR OTHER ROOFING PROBLEMS RESULTING FROM
IMPROPER APPLICATION. FAILURE TO PROPERLY APPLY THIS PRODUCT ACCORDING TO THESE INSTRUCTIONS
COULD RESULT IN UNSAFE CONDITIONS AND COULD ADVERSLY AFFECT COVERAGE OF THE LIMITED WARRANTY.
FASTEN AT
THESE LOCATIONS
FOR ALL
APPLICATIONS
FASTEN AT
THESE ADDITIONAL
LOCATIONS
FOR HIGH-WIND
APPLICATIONS
For questions about TAM‑SHIELD SYNTHETIC UNDERLAYMENT or its application,
contact TAMKO’s Technical Services Department at 800‑641‑4691.
This product data sheet and application instructions were current at time of printing. To obtain a copy of the most current version
of this product data sheet and application instructions, visit us online at tamko.com or call us at 800-641-4691.
This product is covered by a 25-year limited warranty. For information regarding or a copy of TAMKO's limited warranty, contact
your local TAMKO representative, visit us online at tamko.com, or call us at 800-641-4691.
APPLICATION INSTrUCTIONS