Addendum No. 2 26-FAC-0076 Roof Replacement at Ellis L. Marsalis Jr. School (6.25.26)

Mark I. Baum Architect LLC
Addendum 2
Project Nos.: Architect: 25-010, OPSB: ITB #26-FAC-0076 Date: June 25, 2026
Project Name: Roof Replacement at Ellis L. Marsalis, Jr. School
Location: 5625 Loyola Avenue
New Orleans, LA 70115
The following shall be a permanent part of the Bidding and Contract Documents for the above
referenced Project.
This Addendum consists of three (3) 8.5" x 11" pages, as follows:
* Addendum 2 (3 Pages)
GENERAL
2.01 PRIME BIDDERS
Prime Bidders are requested to register as "Prime Bidders" in the City Blueprint Plan Room.
CHANGES TO THE PROJECT MANUAL
2.02 SECTION 07 5216 SBS MODIFIED BITUMINOUS MEMBRANE ROOFING: Delete Paragraph 2.4 B,
including its subparagraphs, in its entirety and replace with the following (revisions are indicated
in bold underline):
A. STYRENE-BUTADIENE-STYRENE (SBS) MODIFIED BITUMINOUS BASE SHEET
1. SBS-Modified Bitumen Polyester Mat Ply Sheet: ASTM D6164/D6164M, Type I, Grade S, SBS-modified
asphalt sheet, reinforced with polyester fabric, smooth surfaced, suitable for torch application method.
2. Basis of Design Products: Subject to compliance with the requirements, provide:
a. Siplast: Paratech 180 Base TG
1) Thickness (ASTM D5147): 118 mils, average
2) Peak Load (ASTM D5147) @ 0.0 degreesF: 115 lbf/inch (MD), 90 lbf/inch (XMD)
3) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 35% (MD), 40% (XMD)
4) Peak Load (ASTM D5147) @ 73.4 degreesF: 85 lbf/inch (MD), 65 lbf/inch (XMD)
5) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
6) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 65% (MD), 80% (XMD)
7) Tear Strength (ASTM D5147) @ 73.4 degreesF: 125 lbf (MD), 85 lbf (XMD)
b. Soprema: Sopralene Flam 180
1) Thickness (ASTM D5147): 118 mils, nominal
2) Peak Load (ASTM D5147) @ 0.0 degreesF: 115 lbf/inch (MD), 90 lbf/inch (XMD)
3) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 35% (MD), 40% (XMD)
4) Peak Load (ASTM D5147) @ 73.4 degreesF: 85 lbf/inch (MD), 65 lbf/inch (XMD)
5) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
6) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 65% (MD), 80% (XMD)
7) Tear Strength (ASTM D5147) @ 73.4 degreesF: 125 lbf (MD), 85 lbf (XMD)
ADDENDUM 2 June 25, 2026 Page 1 of 3
5612 chestnut street new orleans, louisiana 70115 504.330.8782markb@MIBArch.com

Mark I. Baum Architect LLC
B. STYRENE-BUTADIENE-STYRENE (SBS) MODIFIED BITUMINOUS CAP SHEET
1. Granule-Surfaced Roofing Cap Sheet: ASTM D6164/D6164M, Type I, Grade G, SBS-modified asphalt sheet,
reinforced with polyester fabric, non-woven, suitable for torch application method.
2. Basis-of-Design Product: Subject to compliance with requirements, provide
a. Siplast: Paratech 180 CAP FR TG BW
1) Thickness (ASTM D5147): 157.5 mils, average
2) Peak Load (ASTM D5147) @ 0.0 degreesF: 115 lbf/inch (MD), 90 lbf/inch (XMD)
3) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 35% (MD), 40% (XMD)
4) Peak Load (ASTM D5147) @ 73.4 degreesF: 85 lbf/inch (MD), 65 lbf/inch (XMD)
5) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 40% (MD), 50% (XMD)
6) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
7) Tear Strength (ASTM D5147) @ 73.4 degreesF: 125 lbf (MD), 85 lbf (XMD)
8) Granule Color: Bright White
9) Solar Reflectance (ASTMC1549): 0.67, average initial
10) Energy Star Rating with a minimum SRI reflectance 0.78: 82, average initial
b. Soprema: Sopralene Flam 180 FR GR SG
1) Thickness (ASTM D5147): 157 mils, nominal
2) Thickness at selvage (ASTM D5147): 118 mils, average
3) Peak Load (ASTM D5147) @ 0.0 degreesF: 115 lbf/inch (MD), 90 lbf/inch (XMD)
4) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 40% (MD), 35% (XMD)
5) Peak Load (ASTM D5147) @ 73.4 degreesF: 55 lbf/inch (MD), 60 lbf/inch (XMD)
6) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
7) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 65% (MD), 80% (XMD)
8) Tear Strength (ASTM D5147) @ 73.4 degreesF: 125 lbf (MD), 85 lbf (XMD)
9) Granule Color: Highly Reflective White (SG)
10) Solar Reflectance (ASTMC1549): 0.69, average initial
11) Energy Star Rating with a minimum SRI reflectance 0.78: 85, average initial
C. STYRENE-BUTADIENE-STYRENE (SBS) MODIFIED BITUMINOUS BASE FLASHING SHEET
1. SBS-Modified Bitumen Polyester Mat Ply Sheet: ASTM D6164/D6164M, Type II, Grade S, SBS-modified
asphalt sheet, reinforced with polyester fabric, smooth surfaced, suitable for torch application method.
2. Basis-of-Design Product: Subject to compliance with requirements, provide
a. Siplast: Paratech 250 BASE TG
1) Thickness (ASTM D5147): 153.5 mils, average
2) Peak Load (ASTM D5147) @ 0.0 degreesF: 160 lbf/inch (MD), 110 lbf/inch (XMD)
3) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 30% (MD), 35% (XMD)
4) Peak Load (ASTM D5147) @ 73.4 degreesF: 135 lbf/inch (MD), 100 lbf/inch (XMD)
5) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
6) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 60% (MD), 75% (XMD)
7) Tear Strength (ASTM D5147) @ 73.4 degreesF: 165 lbf (MD), 120 lbf (XMD)
b. Soprema: Sopralene Flam 250
1) Thickness (ASTM D5147): 157 mils, nominal
2) Peak Load (ASTM D5147) @ 0.0 degreesF: 160 lbf/inch (MD), 110 lbf/inch (XMD)
3) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 30% (MD), 35% (XMD)
4) Peak Load (ASTM D5147) @ 73.4 degreesF: 135 lbf/inch (MD), 100 lbf/inch (XMD)
5) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
6) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 70% (MD), 80% (XMD)
7) Tear Strength (ASTM D5147) @ 73.4 degreesF: 165 lbf (MD), 120 lbf (XMD)
ADDENDUM 2 June 25, 2026 Page 2 of 3
5612 chestnut street new orleans, louisiana 70115 504.330.8782markb@MIBArch.com

Mark I. Baum Architect LLC
D. STYRENE-BUTADIENE-STYRENE (SBS) MODIFIED BITUMINOUS CAP FLASHING SHEET
1. SBS-Modified Bitumen Polyester Mat Ply Sheet: ASTM D6164/D6164M, Type II, Grade G, SBS-modified
asphalt sheet, reinforced with polyester fabric, granule-surfaced, suitable for torch application method.
2. Basis-of-Design Product: Subject to compliance with requirements, provide
a. Siplast: Paratech 250 CAP FR TG BW
1) Thickness (ASTM D5147): 157.5 mils, average
2) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 30% (MD), 35% (XMD)
3) Peak Load (ASTM D5147) @ 73.4 degreesF: 135 lbf/inch (MD), 100 lbf/inch (XMD)
4) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
5) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 60% (MD), 75% (XMD)
6) Tear Strength (ASTM D5147) @ 73.4 degreesF: 165 lbf (MD), 120 lbf (XMD)
7) Granule Color: Bright White
8) Solar Reflectance (ASTMC1549): 0.67, average
9) Energy Star Rating with a minimum SRI reflectance 78: 82
b. Soprema: Sopralene Flam 250 FR GR SG
1) Thickness (ASTM D5147): 157 mils, nominal
2) Peak Load (ASTM D5147) @ 0.0 degreesF: 160 lbf/inch (MD), 110 lbf/inch (XMD)
3) Elongation @ Peak Load (ASTM D5147) @ 0.0 degreesF: 30% (MD), 35% (XMD)
4) Peak Load (ASTM D5147) @ 73.4 degreesF: 135 lbf/inch (MD), 100 lbf/inch (XMD)
5) Elongation @ Peak Load (ASTM D5147) @ 73.4 degreesF: 55% (MD), 60% (XMD)
6) Ultimate Elongation (ASTM D5147) @ 73.4 degreesF: 60% (MD), 75% (XMD)
7) Tear Strength (ASTM D5147) @ 73.4 degreesF: 165 lbf (MD), 120 lbf (XMD)
8) Granule Color: Highly Reflective White (SG)
9) Solar Reflectance (ASTMC1549): 0.69, average initial
10) Energy Star Rating with a minimum SRI reflectance 0.78: 85, average initial
END OF ADDENDUM 2
ADDENDUM 2 June 25, 2026 Page 3 of 3
5612 chestnut street new orleans, louisiana 70115 504.330.8782markb@MIBArch.com