DIVISION 7 - THERMAL AND MOISTURE PROTECTION

07110 Membrane Waterproofing

1.0 Applicators: A letter shall be submitted from the manufacturer of waterproofing materials stating that the applicator is approved by the manufacturer for application of the waterproofing system specified. The applicator shall have a minimum of five years experience in satisfactory application of the type(s) of system(s) specified.

2.0 Location: Membrane waterproofing shall be provided at the following locations:

a. All exterior walls below grade that enclose rooms and spaces.

b. Walls of below grade elevator pits.

c. Toilet rooms, housekeeping closets and all floors containing floor drains, except where located on slab on grade, (slab on grade damp-proofing will be standard (6) mil reinforced polyethylene with all punctures/penetrations sealed).

d. Floors of all mechanical rooms above other areas.

3.0 Application: Before applying waterproofing, surfaces shall be completely free of dirt and loose materials, concrete fins shall be chipped back, form ties removed and honey-combs, cracks, and other voids filled. Surfaces shall be primed and otherwise prepared as recommended by the material manufacturer. Back-filling against waterproofed foundation wall shall be accomplished with the aid of a suitable membrane protection material and with care to avoid puncturing the membrane.

4.0 Guarantee: Membrane waterproofing shall be guaranteed for two years with the Contractor or water-proofing sub-contractor agreeing to repair or replace work which leaks or otherwise fails to perform as required due to failures of materials or workmanship. This shall include the removal and replacement of any work which conceals the membrane work.

07200 WALLS

Any room that is subject to a high moisture content such as bathrooms and showers shall use waterproof sheet-rock, such as durock.

07300 ROOFING

07301 General Requirements

1.0 Roof design, installation, documentation, inspection and warranty shall comply with the North Carolina State Construction Office's "Roofing Design Criteria 1988" or latest edition, which is available from: Bill Davis, State Construction Office, Room 403, 300 N. Salisbury St, Raleigh, NC 27603-1360; telephone 919-733-7962.

1.1 Standing metal seam roofs:

A. Install three inch stainless steel eyebolts or U-bar every twenty feet on or near the ridge-cap for ASU personnel safety tie-offs, to meet OSHA's standards for roof maintenance. The first one should be within within reach of a roof access hatch or ladder. (See http://www.masapex.com/pages/products.html for sample product.)

B. Snow guards shall be provided to prevent ice or snow from sliding off the roof; (a) where people could be injured, (b) where other roofs could be damaged, or (c) where property damage or hazards could result.

1. Berger Building Products, 805 Pensylvania Boulevard, Feasterville, PA 19053, 1-800-523-8852. http://www.bergerbros.com or http://snowbrakes.com

A. RT Snow Guards for double-lock and mechanically seamed metal roofing.
B. AP Snow Guards for structural and non-structural preformed and architectural metal roof systems.
C. SM Snow Guards for metal roofs where there are no suitable seams to which a seam mounted device can be fastened, including batten and lap seam panels and other profiles having a flat surface of as little as 2 3/8" in width and space for a 5" blade.

1.2 Roof Access:

All roofs shall have a hatch or roof access that fully complies with all OSHA regulations. This includes roof hatches and permanent ladders to different roof elevations. Tie-off to be provided on steep roofs.

2.0 Drainage: Prior to final inspection, the contractor shall conduct a flood test of the roof in the presence of the designer and the Owner to verify drainage.

Roof drains shall be protected from debris during construction.

3.0 Guarantee: Insert the following in the Supplementary General Conditions of the specifications of projects involving roofing of existing structures:

The Contractor shall be responsible for all repairs of water damage to the building, including furnishings, occurring during the construction phase of the project. The designer shall survey, in the presence of the Owner and contractor, existing water damage prior to construction and prepare a written and photographic record of this survey with copies distributed to both the owner and contractor. The contractor shall be responsible for all damage not so documented.

Guarantees and warranty periods shall meet or exceed the State Construction's "Roofing Design Criteria" .

4.0 Storage of Materials: Roofing felts, membranes and insulation are to be stored in a dry trailer or building. Roofing felts or insulation which becomes wet must be removed and replaced. Wet materials shall not be dried and used. Wetted membrane materials must be evaluated to determine the effect on adhesion, lap seals or blister potential. Remove any such material if there is any possibility of failure.

5.0 Existing Roof Removal: When an existing roof is to be removed, the contractor shall remove no more than can be dried-in during the same day. Care shall be taken to keep materials from blowing off the roof and littering surrounding areas. The roof shall be left watertight at the end of each work period and when rain threatens.

07500 Roofing Waterproofing

1.0 In new construction, "dead level" roofs are totally unacceptable. Steeply sloped roofs (more than 3 in 12) are preferred, utilizing systems other than built-up roofs, preferably standing seam metal systems with snow guards attached as needed. The following Steel Roof Panels (or "equal to") are acceptable:

1. Berridge Manufacturing Co. - Cee-Lock Snap Lock Standing Seam

2. Carlisle - "AP" Panel

3. MM Systems Corp. - Snap Lock Standing Seam

4. AEP-Span; "Snap Seam" System

SHEET MATERIALS: Structural Quality Aluminum-Zinc Alloy-Coated Steel Sheet: Hot-dip aluminum-zinc-coated steel sheet complying with ASTM A 792 and an approved coating; Grade 40 or to suit manufacturer's standards. Color: As requested by the ASU Design & Constructions Department (Hartford Green is the University standard)

2.0 Traditional built-up roofing systems are the least desirable of roof systems. If a built-up system is used, design and construction shall be in accordance with the "Roofing Design Criteria - latest edition" from the Division of State Construction. Attach tapered edge and cant strip to all parapet walls to filter water away from edge of roof. Roofing operations shall comply with North Carolina OSHA regulations and NFPA I, Section 3-6.3 "Roofing Kettles".

3.0 Single ply roofing systems are preferred to built-up systems. Single ply membrane should extend completely over parapet walls where feasible. Single ply systems shall be a minimum of 60 mil thick and be installed to meet the latest manufacturers specifications. Mechanically attached or fully adhered systems are preferred to ballasted systems. Manufacturer shall be Carlisle, Gen-Flex, Firestone, or equal; Manufacturer’s Data Sheets shall be provided with the bid to show equality. Single ply roofing systems shall include a minimum of a ten year warranty from the roofing manufacturer plus a two year contractor's warranty.

4.0 Any roofing area which ponds water will be rejected and shall be replaced at no expense to the University. Prior to final inspection, the Contractor shall conduct a flood test of the roof in the presence of the Designer and the University's authorized representative to verify that drainage requirements have been met.

5.0 The Division of State Construction reserves the right to require non-destructive roof surveys be included in the design contract and in the construction contract for built-up roofs. If the survey is not required, the Physical Plant shall be notified approximately one month prior to the final inspection, so that Physical Plant technicians may perform a moisture survey using a moisture density gauge. If this survey indicates moisture is present, the roofing contractor shall take appropriate actions to correct the deficiencies, or, at the option of the roofing contractor, an independent qualified testing company will be selected by the University to verify the test results. If verified, the cost of the survey and any additional surveys necessary will be paid by the roofing contractor. If not verified, the cost of the survey will be paid by the University.

6.0 Vapor barriers are required on all ASU roofs, new or replacement.

07631 Downspouts

1.0 Downspouts shall be sealed at the bottom with a cast iron boot and have a slip joint on the lower 10' section to allow removal from the boot for cleaning.

2.0 Downspouts and underground pipe (new and existing) shall be tested by the contractor with a fire hose at the completion of roof work. The Physical Plant will provide the hose and the test shall be done in the presence of the Physical Plant.

3.0 Screens shall protect the tops of all downspouts.

4.0 Downspouts or roof leader connections to the underground piping shall have a clean out located below the boot for ease in rodding the underground portion of the drain pipe. The underground pipe shall equal or exceed the capacity of all downspouts entering it. The clean out shall have a bolted or screw -on cover plate.

07800 Roofing Accessories

1.0 Provide prefabricated walkways pads from roof access to and around roof mounted equipment for maintenance.

2.0 Roof drain covers shall be metal.

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