S02 - Attachment 17 - 075100 Roofing Repair.pdf

Audie L. Murphy Memorial Veterans’ Hospital EHRM Infrastructure Upgrades

Project No. 671-22-700 Addendum 1

August 24, 2023

Roofing Repair

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SECTION 07 5100

ROOF REPAIR

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Repair of existing roofing system disturbed because of construction work that is a part of new additions and remodeling including the following:

a. At new or replacement roof platforms.

b. At new openings.

c. At existing openings being filled in.

B. Related Requirements:

1. Division 01 - General Requirements.

2. Section 06 1000 - Rough Carpentry.

1.2 SUBMITTALS

A. Comply with requirements of Division 1 Section, Submittal Procedures.

B. Product Data: Manufacturer's specifications and technical data including the following:

1. Detailed specification of construction and fabrication.

2. Manufacturer's installation instructions, specifically written for this Project.

C. Shop Drawings: Indicate dimensions, description of materials and finishes, general construction, specific modifications, component connections, anchorage methods, hardware, and installation procedures.

D. Roofing Work Program:

1. Written outline indicating methods and materials proposed for accomplishing the Work.

2. Base program upon requirements inspection of existing field conditions made jointly by roofing installer and representative of the manufacturer of the roofing materials to be installed.

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1.3 QUALITY ASSURANCE

A. Manufacturer's Qualifications: Not less than five years’ experience in the actual production of specified products.

B. Installer's Qualifications: Firm experienced in installation or application of systems similar in complexity to those required for this Project, plus the following.

1. Acceptable to or licensed by manufacturer.

2. Not less than three years’ experience with systems.

3. Successfully completed not less than five comparable scale projects using this system.

C. C. Pre-installation Conference: Contractor, installer, manufacturer's representative,and representatives of other affected trades shall meet at Site to review procedures, acceptance of substrate surfaces, and coordination with other trades.

1. Schedule meeting at least one week before start of installation.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Storage and Protection: Comply with manufacturer's recommendations.

1.5 WARRANTY

A. Prior to start of work, confirm warranty status of existing roof with OAR.

B. If the roof is covered by warranty, make repairs in compliance with the warrantor’s requirements to maintain the warranty.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Insulation: Match existing. Provide tapered insulation as required.

B. Roofing System: Based on observation the existing roof is built-up asphalt with granulated cap sheet with reflective coating.

C. Sheet Metal: Match existing unless detailed otherwise.

D. Roof Accessories: Reinstall removed existing roofing accessories or provide new to match existing.

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PART 3 - EXECUTION

3.1 EXAMINATION

A. Verification of Conditions: Examine areas and conditions under which Work is to be performed and identify conditions detrimental to proper or timely completion.

1. Do not proceed until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Protection:

1. During installation of new materials and until openings are completely closed, protect building interior from damage by weather.

2. Apply materials to roof deck using methods that will protect building interior from damage.

3.3 INSTALLATION

A. Remove gravel, where occurs, built-up roofing and insulation.

B. Perform cutting required in existing roofing membrane.

C. Install tapered insulation to provide slope of roof surface to drains. Install to match existing roof system construction.

D. Repair existing roofing membrane and flashings where new openings are installed, and where existing openings are closed.

E. Install curbs as detailed.

F. Install top of new blocking and roof insulation flush with top of existing roof insulation.

G. Form and install flashings as indicated or if not indicated to match existing in compliance with SMACNA.

H. Strip in flashing at roof penetrations to match roof system.

I. Install flashings and counter flashings at adjacent walls to match existing.

J. Roof Accessory Installation: Install accessories into roofing system to comply with manufacturer's recommendations.

END OF SECTION

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