Full Product Manual
Grace Vycor
®
 Plus ashing is available in a range of widths: 4 in. 
(100 mm), 6 in. (150 mm), 9 in. (225 mm), 12 in. (300 mm) and 
18 in. (450 mm) to accommodate a variety of job requirements.
Ripcord
®
 split release on demand is available in 6 in. 150 mm), 9 
in. (225 mm) and 12 in. (300 mm) wide membranes. 
Features & Benets
Ripcord
®
—With the sophistication of construction practices 
it becomes a must to follow the proper sequencing principles. 
Ripcord
®
 split release offers the exibility to install half the 
membrane before and the other half after the other building enve-
lope components are installed, i.e. housewrap or felt. Only in this 
way are the proper installation principles followed.
Easy to work with—Membrane installation is fast and easy—
simply remove the release paper and press onto the substrate. 
With Grace Vycor
®
 Plus ashings contractors can ash more 
windows with better quality.
Superior adhesion capabilities— 
The membrane creates a strong bond to the substrate for long-
lasting waterproong protection. 
Seals around fasteners—The specially formulated rubberized 
asphalt adhesive seals around fasteners, allowing no water to 
penetrate and get to the substrate.
Forms water-tight laps—Grace Vycor
®
 Plus ashing superior 
adhesion properties ensure strong laps, even in seams in the ash-
ing. 
Measurement markings—The membrane surface is clearly 
marked at every 6 in.  
(150 mm) and 12 in. (300 mm) intervals to facilitate the installa-
tion procedure.
Highly conformable and exible— 
Can accommodate settlement and shrinkage movement.
Proven track record—Grace Vycor
®
 Plus ashing employs the 
same proven technology as our Grace Ice & Water Shield
®
—the 
market leader in self-adhered underlayments for over 35 years.
Long-lasting waterproong protection—Both the polyethylene 
lm and the specially-formulated rubberized asphalt components 
create a water and moisture barrier that does not degrade from the 
effects of the environment.
Usage
Grace Vycor
®
 Plus self-adhered ashing is a unique solution, 
appropriate for working around a number of detail areas, includ-
ing, but not limited to:
•  Window and door openings (headers, sills, jambs, thresholds, 
nailing anges)
•  Deck-to-wall intersections
•  Inside and outside corners of sheathing
•  Wall-to-wall tie-ins
•  Foundation sill plates
•  Sheathing panel seams
•  Under stucco nishes
•  Masonry walls
•  Other non-roof detail areas
Application Instructions 
Surface Preparation
Apply Grace Vycor
®
 Plus ashing in fair weather  
when the air, surface and membrane are at temperatures of 25°F 
(-4°C) or higher. After precipitation, allow a minimum of 24 
hours for drying before installing the ashing.
Install directly onto a clean and dry surface. Some compatible 
substrates include wood, plywood, oriented strand board, metal, 
concrete and masonry. Remove dust, dirt, and loose nails. Protru-
sions must be removed. Surfaces shall have no voids, damaged, 
or unsupported areas. Repair surfaces before installing the 
membrane.
Priming is generally not required for most substrates provided 
they are clean and dry. However, on concrete, masonry and 
DensGlass Gold
®
, apply Perm-A-Barrier
®
 WB Primer. If adhesion 
is found to be marginal, prime wood composition and gypsum 
sheathing also with Perm-A-Barrier
®
 WB Primer. The coverage 
rate for Perm-A-Barrier
®
 WB Primer is 250–350 ft
2
/gal (6–8 
m
2
/L). Allow primer to dry completely, approximately 1 hour 
depending on weather conditions, before application of ashing.
Membrane Installation
Using the 6 in. (150 mm) and 12 in. (300 mm) measurement 
markings, cut the membrane to the desired length. Peel back the 
release paper to expose the adhesive. Align the membrane and 
press into place with heavy hand pressure.
Laps must be a minimum of 3 in. (75 mm). Mechanically fasten 
the membrane at all vertical terminations. Use only smooth shank 
fasteners. 
Consistent with good construction practice, install the membrane 
such that all laps shed water (following the shingle principle). 
The top membrane layer should go over the bottom layer. Always 
work from the low point to the high point. When needed, use 
Ripcord
®
 split release on demand to split the release paper and 
adhere 
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