IWQ 030426 Ad1.pdf

March 16, 2026

ADDENDUM #1

IWQ 030426, DOT Central Maintenance Facility Roof Repair Project

REVISIONS:

R1. The following requirements shall be added to Section 07 01 50 SILICONE ROOFING RE-

COATING:

Part 1 – GENERAL

1.9 WARRANTY

A. Submit to the Owner a written warranty signed by the Roofing Contractor stating that silicone recoating work shall be completely watertight for a period of three years beginning at Date of Substantial Completion. The warranty shall cover all costs for repairing and/or replacing defective work due to improper materials or workmanship.

B. All materials used in the roofing re-coating shall be approved by the silicone coating manufacturer and shall be applied at a rate required to achieve a 10-year warranty.

R2. The scope of work for the base bid shall include enough material for 144 SF of ceiling grid, comprised of the components listed below. This should be included in the lump sum amount:

• 12’ Main Tee = 2 pieces

• 12’ Wall Mold = 4 pieces

• 4’ Cross Tee = 15 pieces

• 2’ Cross Tee = 18 pieces

QUESTIONS & ANSWERS:

Q1. Are the ceiling tiles consistent throughout the entire building? Are the ceiling tiles throughout the building all the same height?

A1. Ceiling tiles are consistent throughout the building. Please refer to drawing sheet A121 included in the bid package for the ceiling heights in each area.

Q2. Are there any restrictions on working hours?

A2. Working hours will be regular business days (Monday-Friday) from 7:00 AM to 5:00 PM. Any work outside of these hours must be coordinated with the Gwinnett County project manager.

Q3. If water is ponding behind the unit where there is a cricket will that be acceptable because the water will still be there after the coating, or will the city want someone to rework the cricket to shed the water away?

A3. The silicone was selected because it can hold ponding water until it evaporates. Modifications to the cricket are not part of the scope of work for this project.

Q4. Will the exact amount of tiles stated be used or will there be a unit price in case we go over while with the owners rep when walking to point out what tiles need to be changed?

A4. The contractor shall provide 12 cases of ceiling tiles, as shown on drawing sheet A121, which should be more tiles than required for replacement.

Q5. Will Gwinnett accept substitution requests for the silicone?

A5. All references to vendors and "approved manufacturers" are included for description of quality and content of the designated equipment/materials. Equivalent items may be accepted if they meet or exceed all standards of quality and purpose for the intended use, as determined by Gwinnett County.

This addendum should be acknowledged in the space provided below and returned with your bid. Failure to do so may result in your bid being deemed non-responsive.

Company Name

Authorized Representative

Thank you, Jake Scarpone Jake Scarpone Purchasing Associate II

Attachments:

1. Pre-Quote Conference Sign In Sheet

2. Roof Assessment Report

ROOF ASSESSMENT REPORT

Gwinnett DOT Central Operations & Maintenance Facility

Lawrenceville, Georgia

October 5, 2025

Gwinnett DOT Central Operations & Maintenance Facility 2 Reeves Consulting, Inc.

Lawrenceville, Georgia Roof Assessment Report

October 15, 2025

Mr. Brian O’Toole Lindsay, Pope, Brayfield & Associates 344 West Pike Street Lawrenceville, Georgia 30303

RE: Roofing Assessment Report Gwinnett DOT Central Operations & Maintenance Facility 620 Winder Highway NE Lawrenceville, Georgia 30045

Assessment Date: September 29, 2025

ROOF SYSTEM: The roof system consists of an approximately 18-year-old, standing seam architectural metal panel system in overall fair condition for its age. The panels are clipped and the laps have been seamed. Ongoing repairs consist of sealants, mastics and coatings and the repairs are in various stages of failure. Fasteners at panel end laps are backing out and metal flashings show signs of deterioration. The gutters and downspouts are in overall fair condition. Isolated roof leaks were reported by management.

RECOMMENDATIONS: The roof system has approximately 10 remaining years useful service life provided adequate repairs are completed. The metal panel system could benefit from a coating application at all joints and flashings. In addition, the following repairs should be considered.

• Tighten or replace existing fasteners as required.

• Remove previous repair areas where loose fabric exists.

• Clean/prepare the roof surface and apply a single application of Silicone coating.

Silicone coating will only accept additional applications of silicone coating in the future and can withstand areas of standing water.

• Clean/descale gutter interiors and seal all joints prior to application of a rust inhibiting primer.

All work should be completed according to the manufacturer’s written instructions.

I. ROOF CONDITION

A. General Appearance

1. Debris – Minor.

2. Drainage – Good. Isolated evidence of standing water behind penetration curbs.

3. Physical Damage – None observed.

4. General Condition – Fair.

3195 Abbotts Pointe Drive Duluth, Georgia 30097

404.285.0848 www.reevesconsultinginc.com http://www.reevesconsultinginc.com/

Gwinnett DOT Central Operations & Maintenance Facility 3 Reeves Consulting, Inc.

B. Surface Condition

1. Deterioration – None observed.

2. Surface Degradation – Minor.

C. Panel Condition

1. Splitting – None Observed.

2. Loose Laps – Minor. The cinch straps are loose at several locations.

3. Punctures – None Observed.

4. Previous Repairs – Moderate. The panels/laps have been repaired with applications of mastics and coatings.

5. Physical Damage – Minor.

D. Flashing and Gutter Condition

1. Punctures – None Observed.

2. Deterioration – Severe. The rake, eave and ridge sealant has deteriorated.

3. Open Laps – Moderate. Missing/loose fasteners.

4. Attachment – Fair. The metal flashings are secure.

5. Penetrations – Fair. Surface rust is present at metal flashings.

6. Previous Repairs – Moderate. The metal curb flashings are repaired with sealants, coatings and mastics.

7. Gutters – Fair.

8. Downspouts – Fair. Few downspout kickouts are buried under foliage.

Included with this report are representative photographs and an aerial image of the facility.

Please contact us should you have questions or comments concerning this report.

Respectfully, Reeves Consulting, Inc.

Jerry Reeves

President

Jerry Reeves, Jr., RRC, CDT

Vice-President

Gwinnett DOT Central Operations & Maintenance Facility 4 Reeves Consulting, Inc.

Photo 1: Roof overview. Photo 2: Roof overview.

Photo 3: Fasteners backing out of the panels. Photo 4: Coating application at panel seams.

Photo 5: Failing repair. Photo 6: Failing repair.

Gwinnett DOT Central Operations & Maintenance Facility 5 Reeves Consulting, Inc.

Photo 7: Moisture exiting failing repair. Photo 8: Perimeter fastening.

Photo 9: View along wall. Photo 10: Failing ridge cap repair.

Photo 11: Failing sealant at the ridge. Photo 12: Deterioration at penetration flashings.

Gwinnett DOT Central Operations & Maintenance Facility 6 Reeves Consulting, Inc.

Photo 7: Pipe penetration at a rib. Photo 8: Equipment overview.

Photo 9: Coating repair at penetration curb. Photo 10: Gutter conditions.

Photo 11: Typical downspouts. Photo 12: Buried downspout kickout.

Gwinnett DOT Central Operations & Maintenance Facility 7 Reeves Consulting, Inc.