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Liberty Tower Exterior Renovations - Ph 2 <br />South Bend, Indiana <br />© Copyright, Kil Architecture / Planning <br />September 2020 <br />1. Exterior Joints: Seal open joints, whether or not the joint is indicated on drawings, <br />unless specifically indicated not to be sealed. Exterior joints to be sealed include, but are <br />not limited to, the following items. <br />a. Wall expansion and control joints. <br />b. Joints between metal wall panels, door, window, and other frames and adjacent <br />construction. <br />C. Joints between different exposed materials. <br />d. Openings below ledge angles in masonry. <br />e. Expansion joints in concrete paving. <br />f Other joints indicated below. <br />2. Interior Joints: Do not seal interior joints unless specifically indicated to be sealed. <br />Interior joints to be sealed include, but are not limited to, the following items. <br />a. Joints between door, window, and other frames and adjacent construction. <br />b. Other joints indicated below. <br />3. Do not seal the following types of joints. <br />a. Intentional weepholes in masonry. <br />b. Joints indicated to be treated with manufactured expansion joint cover or some <br />other type of sealing device. <br />C. Joints where sealant is specified to be provided by manufacturer of product to be <br />sealed. <br />d. Joints where installation of sealant is specified in another section. <br />B. Exterior Joints: Use non -sag polyurethane sealant, unless otherwise indicated. <br />1. Type S-5 - Lap Joints in Sheet Metal Fabrications: Butyl rubber, non -curing. <br />2. Type S-1 - Control joints in concrete masonry walls. <br />3. Type S-2 - Control and Expansion Joints in Concrete Paving: Self -leveling polyurethane <br />"traffic -grade" sealant. <br />4. Type S-4 - Joints between window and door frames and adjacent materials. <br />5. Type S-3 - Settlement cracks in concrete masonry units. <br />2.2 NONSAG JOINT SEALANTS <br />A. Type S-4 - Polyurethane Sealant: ASTM C920, Grade NS, Uses M and A; single or <br />multi -component; not expected to withstand continuous water immersion or traffic. <br />1. Movement Capability: Plus and minus 25 percent, minimum. <br />2. Color: To be selected by Architect from manufacturer's standard range. <br />3. Manufacturers: <br />a. Pecora Corporation; DynaTrol I -XL: www.pecora.com/gsle. <br />b. Sherwin-Williams Company; Stampede-1/-TX Polyurethane Sealant: <br />www.sherwin-williafns.com/gsle. <br />C. Sika Corporation; Sikaflex-la: www.usa-sika.com/gsle. <br />d. Tremco Commercial Sealants & Waterproofing; Dymeric 240 FC: <br />www.tremcosealants.com/gsle. <br />e. Approved equivalent products. <br />JOINT SEALANTS 07 9200 - 4 <br />