Modified Bitumen Roofing Membranes

1 Specification & Application Manual Modified Bitumen Roofing Membranes SPECIFICATIONS. The Dibiten Specifications Manual has been prepared to serve as a guide for architects, specifiers, Roofing con- tractors and others involved in the roof system selection and application process. This manual is intended only as a guide and the recommendations represent Dibiten's best judgement based on years of experience in the manufacture of Modified Bitumen Roofing material. Dibiten does not claim to be expert with regard to roof system components or elements not manufactured by Dibiten. In all Roofing or waterproofing situations, local code requirements, standard good Roofing practices such as those established by the National Roofing Contractors Association, and the requirements and specifications of the manufacturers of other elements of the roof system must be followed. For information not contained in this manual, or questions regarding system selection, application, or general assistance, please call the Dibiten technical office at (800).

2 922-5922 ( & Canada) or at 1. Specification & Application Manual Modified Bitumen Roofing Membranes TABLE OF CONTENTS. GENERAL DESCRIPTION DIBITEN SINGLE PLY (POLY/4 OR. Technical Assistance POLY/5) FLASHING DETAILS. Suitable Applications Edge Detail Acceptable Decks & Surfaces Curbs and Parapet Walls Metal Coping GENERAL DECK REQUIREMENTS Pipes and Similar Protrusions Nailable Decks Roof Drains Wood Decks Other Terminations and Transitions Plywood Decks Poured Gypsum Decks DIBITEN SMOOTH SURFACED TWO. Non-nailable Deck Types PLY SPECIFICATION. Structural Concrete Decks Edge Detail Precast or Prestressed Slabs Curbs and Parapet Walls Metal Coping DECK PREPARATION Pipes and Similar Protrusions Roof Drainage Roof Drains Expansion Joints Vapor Retarders DETAIL DRAWINGS FOR DIBITEN. Cant Strips SINGLE PLY APPLICATIONS. Insulation Edge Detail Metal Work and Flashing Edge Detail (Gutters).

3 Parapet End Wall MODIFICATIONS & DISCLAIMERS Parapet Side Wall Modifications Parapet and Inside Corners Disclaimers Curbs and Outside Corners Pipes and Similar Protrusions APPLICATION CONSIDERATIONS Roof Drains Weather Conditions Shingle Roof Transition Material Storage and Handling Expansion Joints Job Inspection Safety Inspection DETAIL DRAWINGS FOR DIBITEN. Application Inspection TWO PLY APPLICATIONS. Edge Detail APPLICATION REQUIREMENTS Parapet End Wall Recommended Equipment Parapet Side Wall Methods of Application Parapet and Inside Corners Fully Adhered Curbs and Outside Corners Roof Layout Pipes & Similar Protrusions Base Sheet Requirements Roof Draings Stress Area Treatment Roof Relief Vent MEMBRANE APPLICATION SAFETY. Dibiten Smooth Surfaced Poly/4 and Poly/5. Personnel Dibiten Granular (Slate) Surfaced Contractors Ballast Fire Department Regulations Coating Equipment Do's REROOFING Equipment Don'ts Reroofing Preparation Building Do's Reroofing Terminations Building Don'ts Reroofing Membrane Split Repairs 2.

4 Specification & Application Manual Modified Bitumen Roofing Membranes NEW ROOFS GENERAL WATERPROOFING. Dibiten Poly/4, Poly/5 Specifications Specification for Roof Decks Specification for Shower Pan & Sub-flooring Nailable Decks Specification for Planter Box or Roof Garden Specification 401 (No Insulation) Specification for Concrete or Asphalt Base Specification 402 (Insulation) Sheet Specification 401-2 (Two Ply, No Insulation) Specification for Below-Grade Specification 402-2 (Two Ply, Insulation) Waterproofing Non-nailable Decks Specification for Between- slab Specification 403 (No Insulation) Waterproofing Specification 404 (Insulation) . LISTED SPECIFICATIONS. Specification 403-2 (Two Ply, No Insulation) General Information Specification 404-2 (Two Ply, Insulation). GUARANTEES. Dibiten Granular Specifications Nailable Decks TECHNICAL DATA. Specification 451, 451-FR (No Insulation).

5 Specification 452, 452-FR (Insulation) TEST DATA. Specification 451-2, 451-2 FR (Two Ply, No Insulation). Specification 452-2, 452-2 FR (Two Ply, Insulation). Non-nailable Decks Specification 453, 453 FR (No Insulation). Specification 454, 454 FR (Insulation). Specification 453-2, 453-2 FR (Two Ply, No Insulation). Specification 454-2, 454-2 FR (Two Ply, Insulation). REROOFING. Poly/4, Poly/5, Poly Granular, Dibiten FR. Reroofing Specification Smooth Surfaced Roofs Specification R405 (Dibiten Poly/4, Poly/5). Specification R455, R455 FR (Dibiten Granular). Specification R405-2 (Two Ply, Dibiten Poly/4). Specification R455-2 (Two Ply, Poly/4, Poly/5. ). Gravel Surfaced Roofs Specification R406 (Dibiten Poly/4, Poly/5). Specification R456 (Dibiten Granular). Specification R406-2 (Two Ply, Dibiten Poly/4, Poly/5). Specification R456-2, R456-2 FR (Two Ply, Poly/4 & ). 3. Specification & Application Manual Modified Bitumen Roofing Membranes GENERAL INFORMATION GENERAL DECK REQUIREMENTS.

6 Technical Assistance: Nailable Decks: We encourage the user of this manual to contact our toll Whether or not insulation is specified, a base sheet, fas- free number with any questions concerning product tened in accordance with the manufacturer, 580 and application or specification. The toll free number is: (800) 1-90 requirements, is required over all wood decks. 922-5922 ( and Canada). In some cases technical assistance can be offered in the field, schedules permit- Wood Decks. Wood plank decks should be a mini- ting. Inquire about this service through the toll free num- mum of 1 in thickness and of the tongue and groove ber listed above. type. Decks must be designed for anticipated loads with minimum deflection. Cracks or knotholes larg- Suitable Applications: er then 1/2 diameter must be covered with sheet The Application Considerations Section of this manu- metal if they are not covered with roof insulation.

7 All al must be referenced for information concerning appli- butt joints or end joints of roof boards must be made cation guidelines for Dibiten Poly/4, Dibiten Poly/5 and on rafters. Wood plank decks must be smooth and Dibiten Granular Modified Bitumen membrane. free of moisture before installation of the Roofing Particular attention must be paid to the differences in the system commences. application requirements between smooth and granulat- Plywood Decks. Plywood used in deck construction ed products; particularly, the flashing detail guidelines. must meet the current requirements of the American In all cases, Dibiten Poly/4 smooth surfaced membrane Plywood Association. The minimum thickness must or Dibiflash (pre-cut Dibiten Poly/4 flashing membrane) be 1/2 on rafters not exceeding 24 on center. must be used for all flashing details. Plywood decks, as all deck types, must be free of moisture or dirt before roof work commences.

8 All For ultimate roof life and performance Dibiten recom- joints should be blocked with wood framing. Ply mends consideration of its two ply systems. clips are not acceptable. Specifications and details for the two ply systems, which Poured Gypsum Decks. Poured gypsum decks must carry Dibiten's 20 year term warranty, can be found in be constructed in accordance with the deck manu- the Specifications Section of this manual. facturer's specifications and in accordance with practices recommended by the Gypsum Roof Deck Acceptable Decks & Surfaces: Association. Form boards that allow the deck to dry Roof deck and roof system selection are the responsibil- from below must be used. The minimum thickness ity of the architect, engineer and owner. The selection of must be no less than 2 and wire mesh reinforce- the proper specifications for a particular substrate, the ment is required.

9 A base ply must be secured to the need for and suitability of vapor retarders, insulations, deck using fasteners approved by the Gypsum Roof and other aspects of the deck and roof assembly, rest Deck Association. with the designer. Lightweight Insulating Concrete Decks. A light- All roof decks must be applied in accordance with the weight deck is acceptable to receive Dibiten Roofing deck manufacturer's specifications. products only under the following conditions: Decks must not pond water. Proper venting which allows the deck to dry from below must be used. Topside venting is also All roof decks must be smooth, free of moisture, free of required at the rate of one roof relief vent per every dirt, properly attached, properly constructed, and 1000 square feet of roof area. designed for anticipated loads with minimum deflection. The minimum thickness of the deck must be no less No electrical conduit, bolts, or other similar equipment than 2.

10 The minimum compressive strength of the shall be placed on the surface of the roof deck; such sur- deck must be in accordance with the lightweight face irregularities cannot be properly insulated and insulating concrete deck manufacturer's specifica- roofed. tions. The deck manufacturer and the applicator are responsi- A venting type base sheet is required as an overlay ble for determining that the deck is suitable for receiving over all lightweight insulating concrete decks. It the Dibiten roof system. must be installed with fasteners approved for use with this deck. 4. Specification & Application Manual Modified Bitumen Roofing Membranes The deck must be completely dry. in sufficient number and size to permit satisfactory and rapid drainage of the roof surface. Condensation of air NOTE: Dibiten will not be responsible for leaks conditioning or other process liquids should not be resulting from splits in the roof membrane which allowed to discharge directly onto the roof membrane.