A-A-272 Caulking CompoundsThis Commercial Item Description covers three types of 1-part caulking compounds suitable for use as recommended by the manufacturers for sealing, caulking, filling, leveling and glazing in general exterior architectural service and structures.

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3. SALIENT CHARACTERISTICS

Caulk Requirements

Requirements	Type II, Siliconized Acrylic Latex	Type III, Butyl Rubber	Type IV, 100% Silicone	Test Methods
3.1 Total Joint Movement (maximum extension-compression)	15% See Notes	15% See Notes	50% See Notes	ASTM E 1399
3.2 Shelf Life (minimum months)	24	18	24	Manufacturer’s Certification
3.3 Standard Colors	White, Dark, Gray, Light Gray, Bronze, Cedar, Redwood, Beige, Dark Brown, Light Brown	White, Gray, Black, Bronze, Off-White	White, Gray, Black, Bronze, Clear	Manufacturer’s Color Standard
3.4 Application Temperature, Celsius (Fahrenheit)	10-32 (50 to 90)	5-50 (41 to 122)	5-60 (41 to 140)	See Notes
3.5 Service- Temperature range- cured sealant, Celsius (Fahrenheit)	-34 to 82 (-29 to 180)	-45 to 95 (-48 to 203)	-50 to 120 (-58 to 248)	See Notes
3.6 Expected years of installed service (minimum years)	15	20	20	See Notes
3.7 Time to Paint (maximum)	24 Hours	24 Hours	24 Hours	See Notes
3.8 Extrudability (minimum)	30 mls/min (1 fl oz/min)	30 mls/min (1 fl oz/min)	30 mls/min (1 fl oz/min)	See Notes
3.9 Artificial Weathering:
Washout	None	-	-	ASTM C732
Washout	-	None	None	ASTM C792
Slump	None	-	-	ASTM C732
Slump	-	None	None	ASTM C792
Cracking	None	-	-	ASTM C732
Cracking	-	None	None	ASTM C792
Discoloration	None	None	None	ASTM C732
Chalking	-	None	None	ASTM C792
Chalking	None	-	-	ASTM C732
3.10 Volume Shrinkage (maximum)	30%	25%	15%	ASTM C733
3.11 Low Temperature Flexibility	No cracks or adhesion loss	No cracks or adhesion loss	No cracks or adhesion loss	ASTM C736
3.12 Extension Recovery (minimum)	75%	-	-	ASTM D736