TECHNICAL DATA SHEET Air-Bloc ® LF Liquid-Applied Flashing
Physical Property
Typical Value
Test Method
Color
Blue
-
Application Temperature
20°F to +110°F (-7°C to +43°C)
-
Service Temperature
-40°F to +200°F (-40°C to +93°C)
-
Skin Time @ 25 mils (0.6 mm): 1-2 hours Cure Time @ 25 mils(0.6 mm): 24 hours
Drying Time @ 50% R.H. 68°F (20°C)
-
Elongation, min
264%
ASTM D412, modified
Tensile Strength, min
132 psi (910 kPa)
ASTM D412, modified
Crack Bridging
Pass
ASTM C1305
VOC Content, max
<25 g/L
-
Hardness, Shore A
30-35
ASTM C661
Corrosive Properties
Non-corrosive
-
Nail Sealability
Pass
AAMA 711
Asphalt Compatibility
Pass
AAMA 713
Pass
CGSB 37-GP-56M, ASTM D552
Low Temperature Flexibility @ -22 F (-30 C)
12 mils: 22.9 perms 25 mils: 21.8 perms 40 mils: 10.6 perms
Water Vapor Permeance
ASTM E96, Method B
Moisture Absorption
0.1%
ASTM D570-81
Water Resistance
Pass
AC212, ASTM D2247
≤ 0.004 CFM/ft 2 (≤ 0.02 L/[ sm 2 ])
Air Leakage @75 Pa
ASTM E2178
Peel after UV: >5 lbs/in (875 N/m) Peel after High Temp : >5 lbs/in (875 N/m) Peel after Water Immersion: >5 lbs/in (875 N/m) Peel after Thermal Cycling: >5 lbs/in (875 N/m)
Adhesion
AAMA 711
Flame Spread
20, Class A
ASTM E84
Smoke Developed
5, Class A
ASTM E84
Solids by Volume
95%
-
Description
Air-Bloc ® LF is a moisture cure single-component elastomeric liquid-applied flashing using a highly advanced Silyl-Terminated Polyether (STPE) polymer. It is designed to cure through reaction with airborne moisture to provide a heavy-duty seamless rubber- like impervious membrane with excellent weathering and water resistance.
Features
Fast curing, high solids and single component Low VOC, low odor Excellent compatibility with all Henry ® Easy to install, no special equipment required
air barriers and components, including rubberized asphalt
Usage
Air-Bloc LF is designed for use as a concealed air barrier flashing to protect against air, water and moisture penetration around windows and doors for commercial and residential construction.
Application
Surface Prep: Substrates should be dry and clean of oil, dust, excess mortar and sharp protrusions, standing water and frost. Concrete surfaces must be cured a minimum of 14 days. Damp concrete is acceptable but must not be wet. Acceptable substrates are precast concrete, cast-in-place concrete, concrete block, primed steel, aluminum mill finish, anodized aluminum, galvanized metal, exterior-grade gypsum board, OSB and plywood. Strike masonry joints flush. Concrete surfaces must be smooth and without large voids, spalled areas or sharp protrusions. Where curing compounds are used, they must be clear resin based, without oil, wax
® Company , 999 N. Sepulveda Blvd., Ste. 800, El Segundo, CA 90245 Tel: 800-486-1278 Email: techservices@henry.com www.henry.com
Henry
Revision Date: 8/11/2016
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