07 50 00 Roofing.pdf

X033.01 07 50 00- 1 Roofing

SECTION 07 50 00

ROOFING

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Modification of existing roof system

1.02 SUBMITTALS

A. Submit the following product information, shop drawings, and certifications in accordance with Section 01 33 00.

1. Roofing manufacturer’s applicable installation specifications and details.

2. List of materials proposed for use.

3. Certification that roofing contractor is authorized by roofing manufacturer to perform work as required to maintain existing warranty.

1.03 QUALITY ASSURANCE

A. Roofing contractor must be authorized by roofing manufacturer.

1.04 DELIVERY, STORAGE AND HANDLING

A. Deliver material in original packages, manufacturer’s original labels thereon. Do not remove labels or open packages until inspected by Owner’s Authorized Representative.

B. Deliver materials to jobsite on pallets. Pallet label shall indicate material name, production date and/or product code.

C. Store materials in dry, protected areas in an upright position. Control temperature of storage areas in accordance with manufacturer’s instructions. Protect materials from freezing.

1.05 ENVIRONMENT REQUIREMENTS

A. Do not apply roofing unless correct system application temperatures can be maintained to obtain good adhesion. Operation shall not be conducted when water in any form is present on deck, such as rain, dew, ice, frost, or snow.

1.06 WARRANTY

A. Contractor shall provide a written labor and material warranty guaranteeing all modifications to the roofing and flashing systems performed as a part of this project’s Work shall be weathertight for a period of two (2) years following final acceptance of the project.

PART 2 - PRODUCTS

2.01 ROOFING SYSTEMS

A. The existing roofing system is a Duralast roof system installed over roof insulation. All modifications shall be compatible systems by the original roofing system manufacturer and shall be visually compatible with the existing roof system color.

B. Equipment curbs

1. Install new membrane to full height of curb and 10-12” past seem. Add outside reinforcement at all corners. Match existing membrane thickness.

X033.01 07 50 00- 2 Roofing

2.03 FLASHING SYSTEMS

A. Flashing system for modifications shall be approved by roofing manufacturer.

2.04 WALK TREAD

A. Flashing system for modifications shall be approved by roofing manufacturer.

2.05 OTHER MATERIALS

A. Manufactured or recommended by firm listed above and recommended by manufacturer for conditions of installation.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Contractor and Owner shall perform a joint inspection of existing roof conditions prior to start of construction. Contactor shall photo document existing roofing defects and submit documentation to Owner’s Authorized Representative. Beginning of work shall constitute acceptance of existing roof conditions.

B. Do not proceed until surfaces to receive roofing are smooth, sound, clean, dry and free of defects. Do not start Work until conditions are satisfactory.

C. Roof deck must be structurally sound. Areas showing a loss of integrity due to corrosion, rotting, warping, etc., shall be repaired or replaced prior to the installation of the roofing system.

3.02 PREPARATION

A. Prepare surfaces according to manufacturer’s published instructions.

B. Use cleaning materials necessary to render an acceptable surface.

C. Use compatible materials on voids and joints so finished deck surface will be uniform.

D. Incomplete membrane edges and flashings shall be protected against water entry so that they will remain watertight for an extended period if inclement weather occurs.

E. Damage components must be repaired or replaced if building damage occurs during construction.

3.03 PROTECTION

A. Protect against damage and discoloration caused by Work of this section. Prevent debris from entering and clogging roof drains and gutters.

B. Protect existing roof membrane during construction from damage resulting from construction activities of all trades. Protect adjacent areas from damage with tarpaulin or other durable material.

C. Protection shall be utilized at all hoisting points to protect building walls.

D. Provide protection at traffic and walkway areas to protect access to existing buildings.

3.04 INSTALLATION

X033.01 07 50 00- 3 Roofing

A. Comply with all of the manufacturer’s installation recommendations. Pay particular attention to any recommendations relating to patching of aged roofing systems.

B. Plans and specifications show minimum requirements. Work shall conform to manufacturer’s recommendations and installation instructions. Notify Owner’s Authorized

Representative if conflict exists between Construction Documents and manufacturer’s instructions.

C. Fire Protection: Exercise care and observe fire safety precautions when torch applications are in process. Maintain fire extinguishers on roof in areas of torching. Use care around combustibles on roof.

D. Walking Treads: Provide new walking treads between access points and new roof mounted equipment as required.

3.05 CLEANING

A. Include Work of other sections, clean, repair and touch-up, or replace where directed, products which have been soiled, discolored, or damaged by Work of this section. Remove debris from project site at Work completion or sooner, if directed.

END OF SECTION