SECW: Roof Coatings Commercial Roofing Flat Roofing Repair Metal Roof Repair

Product Data Sheet

Single-Ply Bonding Primer 950

DESCRIPTION:
Southeastern Coatings 950 is a single component polyurethane dispersion.

USAGE:
A primer for difficult to adhere to plastic materials. These include flexible polyvinyl chloride (PVC) films, other flexible vinyl polymers, Hypalon rubber and numerous other plastic substrates. Southeastern Coatings 950 does not bond to silicones, EPDM rubber, polyethylene, polypropylene and fluorocarbon materials.

COLOR:
Subdued yellow.

CONSISTENCY:
A slightly gelatinous fluid.

PHYSICAL PROPERTIES

CHEMICAL RESISTANCE:
Good solvent, acid and alkali resistance.

WATER VAPOR PERMEABILITY:
Southeastern Coatings 950 has a high water vapor permeability even though it is usually applied as a thin film.

FLAMMABILITY:
Non-flammable.

TOXICITY:
Not for use with edible substances or potable water.

ADHESION:
Excellent adhesion to most plastics. Does not adhere to low surface energy materials such as silicones, fluorocarbons, polythylene and polypropylene.

LIQUID COMPONENT PROPERTIES

COVERAGE:
Coverage on smooth single ply membranes will be 3/16 of a gal or 5 wet mils or 1 dry mil. On rough membranes, 1/3 gal or 10 wet mils or 2 dry mils.

SOLIDS:
Weight: 25.0%
Volume: 19.8%

V.O.C.:
The Volatile Organic Compounds is less than 10 grams per liter.

FLASH POINT:
Above 200°F T.O.C.

STORAGE STABILITY:
One year. Protect from freezing in shipment and storage.

THINNING:
Not recommended.

MIXING INSTRUCTIONS:
Mix thoroughly before using. Slight separation tends to occur during storage.

APPLICATION
New vinyl films may have wax, oil or mold release on the surface. It is necessary to solvent wipe contaminated surfaces in order to achieve good adhesion. Weathered surfaces need to be detergent washed before priming. Apply primer by brush, roller or felt pad taking care to completely wet the substrate. Primer should not be applied at temperatures below 50°F or during periods of high humidity. Primed surfaces may be recoated when dry to touch however ultimate adhesion to the substrate may require several days to develop.