CALBAR ROOF SEAL (CRS)

DESCRIPTION:

CRS is a single component urethane, modified with Micaceous Iron Oxide flakes and fire retardant chemicals.  It is especially designed as a waterproofing membrane for all kinds of roofing.  CRS is tough and elastic with a high tensile strength and good puncture resistance, and contains corrosion-inhibiting pigments for protection against rust and acid rain.

OUTSTANDING FEATURES:

• Remains flexible at low temperatures; won't flow at high temperatures.
• Won't get hard and crack with age.
• Exhibits good adhesion to aluminum, tin, corrugated steel, concrete, urethane foam, asphalt roofing.
• Highly compatible with E.P.D.M. and other rubber roofs.
• Provides long-lasting waterproofing in all climatic extremes.
• Protects against UV deterioration.

Specifications

Coating type                  Moisture-cure
V.O.C.                           200 gms/liter
Pot life                          Single component
Shelf life                        12 months
Required thickness           30 mils dry film thickness
Coverage                       2 to 3 gallons per 100 square feet
Packaging                      1 gallon, 5 gallon, 55 gallon
Color                             Black

APPLICATION:

Caution! READ THIS ENTIRE PRODUCT DATA SHEET BEFORE CONTINUING.
Surfaces must be dry and free of dirt, loose debris, oils, grease or any substance that could interfere with adhesion. Refer to the data sheet for information regarding selection of appropriate primer if necessary. Application over seams in metal roofs is achieved by embedding 4" or 6" wide Calfab into a fresh coat of CALBAR ROOF SEAL (CRS) applied at 15 mils wet thickness. The fabric is then saturated with a second application at sufficient thickness to remove all voids, fisheyes and dry spots. Bolt-heads on metal roofs should be daubed with sufficient CRS that they are encapsulated to the point of rundown. As soon as the CRS has dried, it may be coated with CRS or other compatible topcoat.  Application over E.P.D.M. modified and other rubber roofs requires the preparation detailed above along with reinforcement of seams. Some rubbers will swell slightly immediately upon application. This is normal.  The adhesion process is complete when the original dimensions have returned. New urethane foam should receive 2 coats of CRS at 15 mils wet thickness per coat to be sure that no foam is exposed to pinholes or holidays.

TECHNICAL DATA:

Moisture vapor transmission 
Tensile strength
Elongation
Flexibility at low temperatures 
Shore 'A' hardness
Surface spread of flame 
Puncture resistance
Viscosity @ 70°F
Dry time  @ 80°F  (70% R.H.) 
Total cure @ 80°F (70% R.H.)
Application equipment
Cleaning of equipment

Previously coated foam should be thoroughly repaired and pretreated according to our R.R.S. specifications before application of CRS.  Sudden precipitation will not wash off CRS when wet or normally applied, but may produce a mottled dull appearance.  CRS should never be applied to a wet or damp surface.

LIMITATIONS:

Shelf life is 12 months in unopened cans. Part-full cans should be avoided. Storage must be out of direct sunlight at below 90° to avoid skinning.

MAINTENANCE:

Cleaning surface and application of CRS as described in application section may repair damaged areas.

PRECAUTIONS:

CRS contains solvent and reactive isocyanates. Read MSDS thoroughly before using. Do not get on skin or in eyes. Do not ingest or inhale vapor. Make sure that vapor does not enter building. If skin is contaminated, use suitable cleanser. If eyes are contaminated, wash with water for 15 minutes and seek medical attention. Discard clothing if contaminated. If ingested. do NOT induce vomiting – do seek medical attention. If inhaled, remove person to fresh air. 
KEEP A WAY FROM CHILDREN AND PETS.

1. 57 perms
600 psi
500%
180° bend @ -10° C
56ºF
Class 1
12 0 psi
4500 cps
24 hours (to walk on)
72 hours (to 56º Shore 'A')
Brush, roller or spray
Xylene or Aromatic Naphtha                  crs2
                     
ASTM E-96, ASTM D-412, ASTM C-711, AS1TM D-2240, ASTM E-108, ASTM D-154-79, ASTM D-446, ASTM D- 044

NOTICE: The information presented herein is based on tests and data that Penn Valley Paint believes to be reliable. It is intended for use by technically qualified personnel at their own discretion and risk. Since conditions of handling and use are beyond our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information. Nothing herein is to be construed as a license to operate or a recommendation to infringe any patent.