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Liberty Tower Exterior Renovations - Ph 2
<br />South Bend, Indiana
<br />© Copyright, Kil Architecture / Planning
<br />September 2020
<br />flammability (above), when tested in accordance with NFPA 259 with results expressed
<br />in Btu per square foot.
<br />C. Water Penetration Resistance: No water penetration beyond the plane of the base
<br />coat/insulation board interface after 15 minutes, when tested in accordance with ASTM E331 at
<br />6.24 psf differential pressure with tracer dye in the water spray; include in tested sample at
<br />least two vertical joints and one horizontal joint of same type to be used in construction;
<br />disassemble sample if necessary to determine extent of water penetration.
<br />D. Salt Spray Resistance: No cracking, checking, crazing, erosion, blistering, peeling,
<br />delamination, or corrosion of finish coating after 300 hours exposure in accordance with
<br />ASTM B 117, using at least three samples matching intended assembly, at least 4 by 6 inches in
<br />size.
<br />E. Freeze -Thaw Resistance: No cracking, checking, crazing, erosion, blistering, peeling,
<br />delamination, or corrosion of finish coating when viewed under 5x magnification after 10
<br />cycles, when tested in accordance with ICC-ES AC219 or ICC-ES AC235.
<br />F. Weathering Resistance: No cracking, checking, crazing, erosion, blistering, peeling,
<br />delamination, or corrosion of finish coating when viewed under 5x magnification after 2000
<br />hours of accelerated weathering conducted in accordance with ASTM G153 Cycle 1 or ASTM
<br />G155 Cycles 1, 5, or 9.
<br />G. Water Degradation Resistance: No cracking, checking, crazing, erosion, blistering, peeling,
<br />delamination, or corrosion of finish coating after 14 days exposure, when tested in accordance
<br />with ASTM D2247.
<br />H. Mildew Resistance: No growth supported on finish coating during 28 day exposure period,
<br />when tested in accordance with ASTM D3273.
<br />I. Abrasion Resistance Of Finish: No cracking, checking or loss of film integrity when tested in
<br />accordance with ASTM D968 with 113.5 gallons of sand.
<br />J. Impact Resistance: Construct system to provide the following impact resistance without
<br />exposure of broken reinforcing mesh, when tested in accordance with ASTM E2486/E2486M:
<br />1. Standard: 25 to 49 in -lb, for areas not indicated as requiring higher impact resistance.
<br />2.3 MATERIALS
<br />A. Finish Coating Top Coat: Water -based, air curing, acrylic or polymer -based finish with
<br />integral color and texture.
<br />1. Texture: Dryvit Systems, Inc, Standard Textures, with Dirt Pickup Resistance;
<br />Quarzputz DPR; www.dryvit.com/gsle.
<br />2. Color: As selected by Architect from manufacturer's standard range.
<br />B. Base Coat: Fiber -reinforced, acrylic or polymer -based product compatible with insulation
<br />board and reinforcing mesh, Class PB.
<br />C. Reinforcing Mesh: Balanced, open weave glass fiber fabric, treated for compatibility and
<br />improved bond with coating, weight, strength, and number of layers as required to meet
<br />required system impact rating.
<br />EXTERIOR INSULATION AND 07 2400 - 3
<br />FINISH SYSTEMS
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