Foster® C.I. Wrap™ 50 Vapor Retarder Sheet Membrane
Vapor Retarder Sheet Membrane
Foster C.I. Wrap ™ 50 is a heavy duty 50 mil flexible vapor retarder sheet membrane. It is comprised of synthetic, rubber modified asphalt laminated to a tough polymer film and a treated peel and stick release liner. It is available in 4" and 35.5"* widths.
C.I. Wrap ™ 50 is used to provide a protective moisture retarder and vapor retarder film over cold and cryogenic piping and equipment insulation. It may be used over thermal insulation including cellular glass, polyurethane, polyisocyanurate, polystyrene, rigid fiberglass and others.
C.I. Wrap ™ 50 is used for direct burial underground and jacketed above ground applications. It provides a factory controlled film thickness and fast, labor saving application. The membrane is elastomeric allowing for expansion and contraction of the insulation system. It is self-healing and forms a strong bond to the substrate and the sheet overlaps.
C.I. Wrap ™ 50 has a Class 1 flame spread when tested by ASTM E-84.
C.I. Wrap ™ 50 is also used to protect insulation on buried hot service pipelines.
Apply below 125ºF (52ºC). Sheet should be stored at 70 ° F for at least 24 hours before applying in temperatures below 60 ° F. Keep rolls warm until used. See application guide for applying in temperatures below 50ºF (10ºC).
Do not apply to damp, frosty or contaminated surfaces.
Membrane should not be left exposed to UV for more than 14 days. Cover with jacketing as specified. If jacketing is not to be applied for longer than 14 days, cover temporarily with black plastic sheeting.
Membrane is not to be used for banding or mechanical fastening. Standard fastening of insulation is required.
Over polystyrene insulation on exterior applications, the membrane should be jacketed immediately with a white or light reflective jacket. If left exposed to sun, C.I. Wr ap 50's black color may heat up enough to melt insulation. Maximum temperature at C.I. Wrap surface is 160 ° F (71 ° C). On hot lines ensure that excess heat does not escape through insulation joints and exceed upper temperature limit.
For application by skilled professionals only.
Rubber modified asphalt with cross-laminated polyethylene
(Temperature at membrane surface) -25 ° F to 160° F (-32 to 71° C)
STANDARD ROLL SIZE
4" x 75' (10 cm x 22.9 m) 35.5" x 75' (0.9 m x 22.9 m)*
TOTAL FILM THICKNESS:
50 mils (1.3 mm)
TENSILE STRENGTH AND ELONGATION (ASTM D 412)
Tensile Strength >400 psi Elongation >300%
WATER VAPOR PERMEANCE:
ASTM F 1249: < 0.015 perms. Tested at 100ºF (38ºC) and 90% RH. ASTM E 96, Procedure A: < 0.01 perms
PUNCTURE RESISTANCE (ASTM E 154):
50 lbf (222 N) minimum
OVERLAP ADHESION: (ASTM D 1000)
> 12 lb/in. width (> 21 N/cm)
SURFACE BURNING CHARACTERISTICS (ASTM E 84):
Flame Spread: 0
Applied to 1/4 inch (6.4 mm) inorganic reinforced cement board. The flame spread may vary when applied over other surfaces.
RESISTANCE TO DETERIORATION FROM CONTACT WITH SOIL (ASTM E 154):
Pass. No loss of performance
PLIABILITY AT LOW TEMPERATURE (ASTM D 146)
No cracking, remains pliable at 25 ° F (-32 ° C)
* Actual width cut to 23.5" or 35.5" for convenient application when C.I. Wrap is pre-applied to insulation in-shop
TM TradeMark of H.B. Fuller Construction Products Inc.
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