Mastic #1163 (smooth)
A durable, highly viscous material (thick), waterproof sealer/chalk. May be used over wood, brick, stone, concrete, aluminum galvanized or primed steel, asbestos, weathered asphalt roofing products, polystyrene and polyurethane foam. May be used as a general purpose sealer, chalk, or patching material around chimneys, vents, stacks, pipes, mechanical units, windows, door frames, or any other areas needing sealing or waterproofing. Fill cracks in concrete, block, stone, brick, walls (interior or exterior) or foundations. Coverage will be determined by application and therefore may vary with use and layers applied. Also has improved elasticity and elongation properties. ( By special order this product can be manufactured at a viscosity that will allow the material to be spray applied.)
Description ASTM Test #
Color Off White
Low Temperature (0 deg.C) Flexibility
=180 deg. Bend Over 1" mandrel Passed
1/2" mandrel Passed
1/4" mandrel Passed
1/8" mandrel Passed
Tensile Strength (psi.) D-2370 306
Elongation - (% @ 25deg.F) D-2370 837
(% @ 75deg. F) 334
Viscosity (K.U.+ 10) D-562 118
PH 80
Solids (by Weight) D-2832 63.6
Solids (by Volume) D-2697 57.4
Weight per Gallon ( + 0.2lbs) D-1475 9.8
Film Hardness (Shore A) D-2240 77
Freeze / Thaw Stability - Cycles Passed 5
Adhesion: 180deg Peel-Instron Unit (A)
-Aluminum Excellent
-Wood (pine) Excellent
-Urethane Foam Excellent
Modified Bitumen Excellent
Water Vapor Permeance D-1653/E-96 2.8
(Perms=Grains/hr.ft.sqd.in.Hg.)
Water Vapor Transmission Rate D-1653/E-96 1.19
(Grains/hr.ft. sqd)
Specific Permeability D-1653 0.24
(mg.mm./cm.sqd 24hr.)
120deg. Oven Stability - 1 week D-1849 6.8/106
(PH/KU) - 2 week 6.7/109
Specific Gravity (g/cc @ 25deg C) D-1475 1.18
Lead Content None
Mold/Mildew Resistance D-3273 Will Not support mold or mildew growth under normal conditions
Shelf Life Two + years in unopened containers
Service Temperature Range Excellent performance characteristics -20 deg. to 200 deg F
(A) Actual P.S.I. numbers available from the Technical Services Department, Alfieri - McBee Corporation if required.
NOTE: This data is based on information from laboratory tests which are believed to be accurate but all recommendations are made without warranty, since the conditions of use are beyond the Alfieri-McBee Corporation's control. The Company does not assume any liability or responsibility of the product relative to coverage, performance, or injury resulting from use. Liability, if any, is limited to replacement of products.
