Coatings
Construction Silicone Coating (C-555)
C-555 Construction Coating is a three-component, room temperature vulcanizing (RTV) silicone rubber system. C-555 is applied by spraying, rolling, or brushing material over surface and will cure upon exposure to atmospheric moisture. Cure is complete in approximately 6 hours after application.
C-555 is engineered to exhibit excellent adhesion to a variety of surfaces, and provides superior resistance to weathering effects. This coating remains elastic under all weather conditions, from subzero temperatures to over 300F.
C-555 Construction Coating is excellent protective coating for new and existing roofing. It is permeable to water vapor, but not liquid water. Water vapors underneath the coating will pass through the membrane, thus avoiding water damage below the coating.
Instructions for Use:
C-555 is supplied as a three-part system: Dark Gray Base Coat (C‑555), Catalyst and Activator. Mix components by weight--Only when ready to use. C-555 should not be mixed and stored for longer than 24 hours. The material may thicken or settle during extended storage. Under such circumstances vigorous mixing will restore homogeneity and reduce the viscosity.
Mix Ratio: Part A: 100% (Base)
Part B: 2%,
Part C: 1.5%
Typical Method Value
Coating, As Supplied:
Appearance: Dark Gray
Viscosity CPS: 7,000
Silicone Content, % By Weight: 80
Silicone Content, % By Volume: 67
Flash Point, TCC: 60F
Tack Free Time: 3Hours
Specific Gravity: 1.26
Shelf Life: 3 MONTHS
Cured Coating: (30 mil Dry Film Cured 24 Hours @ 75 F & 50% RH):
Durometer, Shore A ASTM D2240: 50
TensileE Strength, PSI ASTM D412: 500
Elongation, % ASTM D412: 130
Tear Strength ASTM 624: 150
Water Absorption, % Weight ASTM D471: 0.5
Permeability, Perms ASTM E96B: 2.8 (20 mils @ 100 F)
Temperature Service Range: ‑80 TO 300F
Coverage: 15 mils thick, 50 square feet/ gallon
**Values listed are typical and not intended for use in specifications.
The information and data contained herein are based on information we believe reliable. Each user of the material should thoroughly test any application and independently conclude satisfactory performance before commercializing. Suggestions of uses should not be taken as inducements to infringe on any particular patent.