TAMKO TW Moisture Wrap - Manual

Tamko
®
TW moisTure Wrap
above Grade moisture / air Barrier membrane
applicaTion insTrucTions
PRePARAtIOn
All surfaces must be dry and clean. Dirt, dust and any other
foreign matter must be removed. TW MOISTURE WRAP
must be applied when air, substrate, and membrane tempera-
tures are above 40 degrees F.
Acceptable surfaces are cast-in-place concrete, pre-cast
concrete, concrete masonry blocks, exterior gypsum sheath-
ing, plywood, OSB, DensGlass ® , DensGlass Gold ® , felt-
faced and foil-faced polyisocyanurate foam insulation, EPS
/ XPS, ICF, wood, vinyl or metal surfaces. Concrete must be
allowed to cure for a minimum of 7 days prior to application
of TW MOISTURE WRAP.
PRImIng
Priming is generally not required for most substrates pro-
vided they are clean and dry. However, on concrete, masonry,
DensGlass ® and DensGlass Gold ® as well as any additional
surfaces where adhesion is found to be marginal, prime the
surface receiving flashing with the appropriate primer, TWP-1
Quick Dry Primer** or TWP-2 Water-Based Primer at the
designated coverage rate according to primer application
instructions for specified weather conditions. DO NOT USE
TWP-1 Quick Dry Primer on
EPS / XPS or ICF surfaces.
FAstenIng
Mechanical fastening using a smooth-shank fastener is recommended in situations where adhesion is found to be marginal after
priming. Stapling individual pieces of flashing around the entire perimeter of the flashing 18" on center will maintain attachment
to the substrate.
geneRAL APPLICAtIOn
Unroll TW MOISTURE WRAP and cut to the desired length. Begin by removing approximately 12 inches of the release film
and center the membrane over the area to be covered. Firmly press or roll the membrane against the substrate and continue pull-
ing the release film off while smoothing the membrane into place.
sPeCIFIC APPLICAtIOn
The remaining portion of these application instructions addresses specific applications of the TW MOISTURE WRAP mem-
brane for full coverage envelope applications and window and door perimeter applications.
Be sure to read through these instructions to first identify the application method which is specific to your installation before you
begin the application process.
Failure to properly apply TAMKO TW Moisture Wrap according to the Application Instructions may affect coverage under the
applicable 5-year limited warranty.
FULL COveRAge enveLOPe APPLICAtIOns
In full coverage envelope application, TW MOISTURE WRAP should be tightly sealed into roofing and below-grade water-
proofing systems and structural perimeter flashings to retain the integrity of the air barrier throughout the entire structure. Note
that in full coverage envelope applications, the dew point must be engineered to the outside of the building. Side laps must be a
minimum of 2 inches and end laps should be 4 inches. All terminations must be sealed with TWM-1 Mastic.
For DensGlass and DensGlass Gold sheathing and OSB, all air and vapor barrier applications are to be done vertically with
membrane no longer than 6 feet. Material must be broomed in using a stiff, hand-held broom.
CAUTION: The National Institute for Occupational Safety and Health has concluded that the fumes of heated roofing
asphalt are a potential occupational carcinogen. The physical nature of this product may help limit any inhalation or dermal
hazard during application and/or removal. However, physical forces such as sawing, grinding or drilling during demolition
work and heating or burning may increase the inhalation or dermal exposure hazard of this product. Take precautions to
prevent breathing and contact with skin.
** WARNINGS AND HAZARDS
TWP-1 contains combustible solvents. Avoid exposure to sparks, open flame, heat, and other forms of ignition. Use in well ven-
tilated areas. Avoid breathing vapors. Refer to MSDS for detailed product information and warnings.