SECTION 07565

PREPARATION FOR RE-ROOFING

PART 1 GENERAL

SECTION INCLUDES

Removal of existing roofing [and insulation] covering in preparation for a new roof membrane system.

RELATED SECTIONS

[Section 01120 - Alteration Project Procedures.]

Section 02072 - Minor Demolition For Remodelling.

Section 07512 - Built-Up Coal Tar Bituminous Roofing.

Section 07514 - Built-Up Asphalt Bituminous Roofing.

Section 07531 - Elastomeric Sheet Roofing - Fully Adhered.

Section 07532 - Elastomeric Sheet Roofing - Loose Laid/Ballasted.

Section 07533 - Elastomeric Sheet Roofing - Mechanically Attached.

Section 07536 - Modified Bitumen Roofing - Conventional Application.

Section 07545 - Foam Roofing.

Section 07551 - Protected Membrane Built-Up Asphalt Roofing.

Section 07553 - Protected Membrane Elastomeric Sheet Roofing.

Section 07555 - Modified Bitumen Roofing - Protected Membrane.

Section 07556 - Rubberized Asphalt Roofing - Protected Membrane.

SYSTEM DESCRIPTION

[All Roof Areas] [________________]:	Remove existing [roofing gravel,] [perimeter flashings,] [base flashings,] [counter flashings,] [vent stack flashings,] [roofing membrane,] [insulation,] [vapor retardant,] [and] [________________].

QUALIFICATIONS

Materials Removal Firm: Company specializing in performing the work of this Section with minimum [__________] years [documented] experience.

PRE-INSTALLATION CONFERENCE

Attend conference specified in Section [________].

ENVIRONMENTAL REQUIREMENTS

Do not remove existing roofing membrane when weather conditions threaten the integrity of the building contents or intended continued occupancy.

Maintain continuous temporary protection during and prior to installation of new roofing system.

SCHEDULING

Schedule work under the provisions of Section [01300] [________].

Schedule work to coincide with commencement of installation of new roofing system.

[Remove only existing roofing materials that can be replaced with new materials [the same day] [as the weather will permit].]

COORDINATION

Coordinate work under provisions of Section [01039] [________].

Coordinate work with other affected mechanical and electrical work associated with roof penetrations.

PART 2 PRODUCTS

MATERIALS

Temporary Protection: Sheet [polyethylene] [fiber reinforced plastic] [________________]. Provide weights to retain sheeting in position.

PART 3 EXECUTION

MATERIAL REMOVAL FIRMS

[____________________________________].

[____________________________________].

[____________________________________].

EXAMINATION

Verify existing site conditions under provisions of Section [01039] [________].

Verify that existing roof surface is clear and ready for work of this Section.

PREPARATION

Sweep roof surface clean of loose matter. Remove loose refuse and dispose off site.

MATERIALS REMOVAL

[Remove metal counter flashings] [Fold up metal counter flashings to permit access to top edge of base flashings].

Scrape roofing gravel from membrane surface [without causing serious damage to membrane felts].

Remove [damaged portions of] roofing membrane, perimeter base flashings, flashings around roof protrusions, [pitch pans and pockets] [insulation vents] [and] [________].

Cut and lay flat any membrane blisters.

Remove [damaged] insulation [and fasteners], cant strips, blocking, and [________________].

Remove [vapor retardant] [sheathing paper] [underlay] [and] [________________].

Repair existing [wood] [steel] [concrete] [________] deck surface to provide smooth working surface for new roof system.

TEMPORARY PROTECTION

Protect finished Work under provisions of Section [01500] [________].

Provide temporary protective sheeting over uncovered deck surfaces.

Turn sheeting up and over parapets and curbing. Retain sheeting in position with [weights] [temporary fasteners].

[Provide for surface drainage from sheeting to existing drainage facilities.]

Do not permit traffic over unprotected or repaired deck surface.

FIELD QUALITY CONTROL

Field inspection [and testing] will be performed under provisions of Section [01400] [________].

[Inspection will identify the exact limits of material removal.]

[Testing will identify the exact condition of existing materials and their reuse, repair or removal.]

Test Reports: Indicate [existing insulation moisture content,] [existing bitumen quality,] [________________].

SCHEDULES

Main Roof: Remove flashings, gravel, membrane and underlayment in preparation for new protected membrane roof system specified in Section 07551.

Penthouse Roof: Remove flashings and gravel in preparation for new conventional membrane roof system specified in Section 07514.

END OF SECTION