ROOFING EPDM ELASTOMERIC SHEET ROOFING FULLY ADHERED- CONVENTIONAL

Transcription

1 ROOFING EPDM ELASTOMERIC SHEET ROOFING FULLY ADHERED- CONVENTIONAL PART 1 GENERAL 1.1 SECTION INCLUDES A. Insulation, membrane roofing, base flashings roofing membrane accessories joints, and counter flashings. 1.2 REFERENCES A. ASTM C578 Preformed, Cellular Polystyrene Thermal Insulation. B. ASTM C728 Perlite Thermal Insulation Board. C. ANSI/ASTM D412 Rubber Properties in Tension. D. ANSI/ASTM D746 Brittleness Temperature of Plastics and Elastomeric by Impact. E. ASTM D624 Rubber Property Tear Resistance. F. ASTM D1004 Initial Tear Resistance of Plastic Film and Sheeting. G. ASTM D2240 Rubber property Durometer Hardness. H. Factory Mutual Engineering and Research Corporation (FM) Roof Assembly Classifications. I. National Roofing Contractors Association (NRCA) Roofing and Waterproofing Manual J. Underwriters Laboratories (UL) Fire Hazard Classifications. 1.3 SYSTEM DESCRIPTION A. Elastomeric Sheet Membrane Conventional Roofing System: 60 mil one ply membrane system, Replacement insulation adhesive applied membrane with surface color coated finish SUBMITTALS A. Submit for owner approval. B. Shop Drawings: Indicate setting plan for tapered insulation, joint or termination detail conditions, conditions of interface with other materials. C. Product Data: Provide characteristics on membrane materials, flashing materials, insulation, vapor retarders, and protective coating. D. Manufacturer s Installation Instructions: Indicate special precautions required for seaming the membrane. E. Manufacturer s Certificate: Certify that products meet or exceed specified requirements.

2 F. Reports: Indicate procedures followed; ambient temperatures, humidity, and wind velocity during application. 1.5 QUALIFICATIONS A. Manufacturer; Company specializing in manufacturing the products specified in this section with three years experience. B. Applicator: Company specializing in performing the work of this section approved by system manufacturer. C. Work of this section to conform to manufacturer s instructions. 1.6 REGULATORY REQUIREMENTS A. Conform to applicable code for roof assembly fire hazard requirements. 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver product in manufacturer s original containers, dry, undamaged, seals and labels intact. B. Store products in weather protected environment, clear of ground and moisture. 1.8 ENVIRONMENTAL REQUIREMENTS A. Do not apply roofing membrane during inclement weather. B. Do not apply roofing membrane to damp or frozen deck surface. C. Do not expose materials vulnerable to water or sun damage in quantities greater than can be weatherproofed during same day. 1.9 COORDINATION A. Coordinate the work with the installation of associated metal flashings, as the work of this section proceeds. B. Coordinate with any utilities involved. (Gas, Electric, Etc.) 1.10 WARRANTY A. Provide ten year warranty for materials and workmanship. B. Cover damage to building resulting from failure to prevent penetration of water.

3 PART 2 PRODUCTS 2.1 MANUFACTURES MEMBRANE MATERIAL A. Firestone: Rubbergard. B. Other acceptable manufacturers offering equivalent products. 1. Manville 2. Owens Corning 3. Goodyear 4. Carlisle 5. BASF MEMBRANE AND ASSOCIATED MATERIALS A. Membrane: EPDM: color: black. B. Seaming Materials: As recommended by membrane manufacturer ADHESIVE MATERIALS A. Surface Conditioner: compatible with membrane. B. Membrane Adhesives: As recommended by membrane manufacturer. C. Insulation Adhesive: As recommended by insulation manufacturer. D. Thinner and Cleaner: As recommended by adhesive manufacturer, compatible with sheet membrane. 2.4 MANUFACTURERS INSULATION A. Firestone; ISO 95+ B. Other acceptable manufacturers offering equivalent products. 1. Manville 2. Owens Corning 3. Goodyear 2.5 INSULATION A. Insulation: Polyisocyanurate rigid board, both faces surfaced with polyethylene treated kraft paper. 2.6 FLASHINGS A. Flexible Flashings: Same material as membrane; same color as membrane. B. Counter Flashings: Galvanized metal, as specified in Section

4 2.7 ACCESSORIES A. Sheathing Joint Tape: Paper type. B. Insulation Joint Table: Asphalt treated glass fiber reinforced; 6 inches wide; self adhering. C. Roofing Nails: Galvanized or non-ferrous type, size as required to suit application. D. Insulation Fasteners: Appropriate for purpose intended and approved by system manufacturer; length required for thickness of material. E. Sealants: As recommended by membrane manufacturer. F. Walkway Pads: As recommended by membrane manufacturer. PART 3 EXECUTION 3.1 EXAMINATION A. Verify that surfaces and site conditions are ready to receive work. B. Verify deck is supported and secure. C. Verify deck is clean and smooth, free of depressions, waves, or projections, properly sloped. D. Verify deck surfaces are dry and free of snow or ice. E. Verify roof openings, curbs, pipes, sleeves, ducts, and vents through roof are solidly set. 3.2 PREPARATION A. Replace any missing or damaged insulation boards. 3.3 INSULATION APPLICATION A. Apply adhesive to deck in accordance with adhesive and insulation manufacturer s instructions. Embed insulation into adhesive with full contact. B. apply adhesive to the top surface of insulation. Embed the second layer of insulation into adhesive, with joints staggered minimum 6 inch from joi8nts of first layer. C. Place the constant thickness first layer and the tapered thickness insulation second layer to the required slope pattern in accordance with manufacturer s instructions. D. Minimum Total Insulation Thickness: 1-1/2 inch. E. Place boards perpendicular to deck flutes with edges over flute surface for bearing support. F. Lay boards with edges in moderate contact without forcing. Cut insulation to fit neatly to perimeter blocking and around penetrations through roof. G. Lay tapered boards or cut boards to slope for a distance of 24 inches back from roof drains for positive drainage.

5 H. Apply no more insulation than can be covered with membrane in same day. I. Tape joints of insulations in accordance with insulation manufacturer s instructions. 3.4 MEMBRANE APPLICATION A. Apply membrane in accordance with manufacturer s instruction. B. Apply adhesive in accordance with manufacturer s instructions. C. Roll out membrane, free from air pockets, wrinkles, or tears. Firmly press sheet into place without stretching. D. Bond sheet to substrate except those areas directly over or within 3 inches of a control or expansion joint. E. Overlap edges and ends and seal by contact adhesive, minimum 3 inches. Seal permanently waterproof. Apply uniform bead of sealant to joint edge. F. Shingle joints on sloped substrate in direction of drainage. apply joint tape and seal. G. Extend membrane up cant strips and minimum of 6 inches onto vertical surfaces. H. Seal membrane around roof penetrations 3.5 FLASHINGS AND ACCESSORIES A. Apply flexible flashings to seal membrane to vertical elements. B. Secure to nailing strips at 4 inches o.c. C. Coordinate installation of roof drains and related flashings. D. Seal flashings and flanges of items penetrating membrane. E. Install walkway pads in accordance with manufacturer s warranty 3.6 FIELD QUALITY CONTROL A. Correct identified defects or irregularities. B. Require site attendance of roofing and insulation materials manufacturers during installation of the work. 3.7 CLEANING A. In areas where finished surfaces are soiled by work of this section, consult manufacturer of surfaces for cleaning advice and conform to their instructions. B. Repair or replace defaced or disfigured finishes caused by work of this section. C. Removal of all old materials and construction debris from site.

6 3.8 PROTECTION A. Protect building surfaces against damage from roofing work. B. Where traffic must continue over finished roof membrane, protect surfaces