Instructions / Assembly

In addition, Grace Vycor
®
PRO’s wide application and
service temperature windows make it appropriate for
use in any environment.
Product Description
Vycor
®
Pro ashing is composed of a durable, tear and
puncture resistant engineered polypropylene backing
lm, paired with an aggressive, non-asphaltic, propri-
etary butyl-modied adhesive. Grace Vycor
®
PRO
ashing comes in 75 ft rolls and is available in:
4 in. (102 mm)
6 in. (150 mm)
9 in. (225 mm)
12 in. (305 mm)
Features & Uses
• Superioradhesivecapabilities—Non-Asphaltic,
proprietary butyl-modied adhesive seals and adheres
to the substrate creating a best-in-class barrier against
air and water intrusion.
• Sealsaroundfasteners—The specially formulated
adhesive seals around fasteners, preventing water
penetration.
• Formswater-tightlaps—Grace Vycor
®
PRO’s
superior adhesion properties ensure strong laps,
even at the seams of the ashing.
• HighlyConformable—Thin and pliable membrane
is easily worked into tight details.
• Wideapplicationwindow—Primerless adhesion to
wood sheathing from 25°F (4° C)
• WideServiceTemperatureWindow—Suitable for
in-service conditions up to 176° F (80° C)
• Longexposuretime—120 days of exposure
provides protection over long, unpredictable
construction cycles
• FlexibleApplication—Grace Vycor
®
PRO’s wide
performance window makes it appropriate for use in
all regions
• Easytoworkwith—This high performance barrier
membrane is easy to apply with 6 and 12 inch (150
mm and 305 mm) measurement markings.
• SuperiorWeatherProtectionSolution—Use in
combination with Grace Vycor
®
enV-S
™
or Grace
Vycor enV
®
fully-adhered weather barriers to
provide superior protection from wind driven rain.
Compatibility
•Vycor
®
Pro ashing contains no asphalt, and is fully
compatible with rigid and exible PVC window
nailing anges.
•Compatible with common weather resistive barriers
and many types of sealants. Refer to Technical Letter
1, Chemical Compatibility with Other Building Mate-
rials and Sealants for more information.
Usage
Grace Vycor
®
PRO ashing is a unique solution
appropriate for working around a number of detail
areas, including, but not limited to:
• Window and door openings (headers, sills, jambs,
thresholds, nailing anges)
• Deck-to-wall intersections
• Corner boards
• Wall-to-wall tie-ins
• Foundation sill plates
• Sheathing panel seams
• Under stucco nishes
• Masonry walls
• Application to EPDM in vertical applications
• Other non-roof detail areas
Application Instructions
Apply in fair weather to clean and dry surface at air
temperatures of 25°F (4° C) or higher. Apply directly
to substrate. Compatible substrates include wood,
plywood, oriented strand board, exterior gypsum,
metal, concrete and masonry. Install Grace Vycor
®
PRO ashing with weather-resistive barriers to form
water-shedding laps. Cut membrane to length. Peel
back release liner. Align membrane and press into
place. Mechanically fasten membrane at vertical termi-
nations as necessary. Press or roll into place with hand
roller to achieve best adhesion. Primer is generally
not required for most substrates (including plywood,
OSB, dimensional lumber, PVC window anges, steel,
and aluminum) provided they are clean and dry. On
concrete, masonry and glass ber surfaced gypsum
sheathing apply Perm-A-Barrier
®
WB Primer at a
coverage rate of 250–350 ft
2
/gal (6–8 m
2
/L). Regard-
less of substrate, if adhesion is found to be marginal,