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Flashings Fasteners & Accessories
 

Flashings Fasteners & Accessories

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    Flashings Fasteners & Accessories Flashings Fasteners & Accessories Presentation Transcript

    • Flashings, Fasteners & Accessories
    • Flashing Designs
        • Also Referred to as Trims
        • Press/Folder Broke
        • Strippable Film Applied
        • Made Per Order in Shop
        • Standard Shape, Custom Sizes
        • 10’-0” Standard or up to 20’-0”
        • Architectural “Box” Flashings
        • Commercial Sculptured
      Architectural / Residential / Commercial
    • Press/Folder Broke Flashings
    • Arch. / Res. Flashings
    • Architectural Eave/Drip Edge Note: Panel field hemmed.
    • Architectural/Residential Gutter Note: Post-hung gutter system.
    • Architectural Valley Note: Water diverter should equal panel rib height.
    • Architectural Rake/Gable Note: Rake/Gable flashings should be installed working from bottom to top of roof.
    • Architectural Rake/Sidewall
    • Architectural Ridge/Hip
    • Vented Ridge
    • Sculptured Commercial Flashings
    • Commercial Gutters Sculptured Post-Hung Gutter System Box Pre-Hung Gutter System
    • Flashing Packaging Shrink Wrapped Wood Crate
    • Four questions to help determine the proper fastener: 1. What materials are being fastened? 2. What are the load requirements? 3. What are the service requirements? 4. What is the environment? Fasteners/Screws
      • List each type of material (steel, wood, rigid insulation).
      • List the thickness of each material. (Determines attachment thickness)
      #1 What materials are being fastened ? Steel Purlin Wood Decking Steel Decking
    • Allow at least 3 threads to extend beyond all materials. (Screw will be at least 1/2” – 1” longer than attachment length.) Attachment thickness + ½” # 1 What materials are being fastened?
      • Uplift load Relates to the pullout / tensile / pullover strength of the screw – washer.
      • Shear load Relates to the shear strength / ductility of the screw.
      Bending #2 What are the load requi rements? Shear Shear Tensile Pullover
      • Is there...
      • Vibration?
      • Expansion & Contraction?
      • Prying on the Joint?
      Identify conditions that can affect the screws performance. #3 What are the service requirements?
      • Determine...
      • Corrosion potential
      • Dissimilar metals
      #4 What is the environment?
    • 1. CONCEALED FASTENER CONDITIONS Fastener/Screw Applications
    • 2. EXPOSED FASTENER CONDITIONS Fastener/Screw Applications
      • To eliminate confusion and assure the proper fastener is used, specifications for tapping screws should be written to include:
      • Thread diameter
      • Threads per inch
      • Screw Length
      • Point Type
      • Type of screw
      • Drive size
      • Head style
      • Fastener material
      • Finish / plating / corrosion resistance (salt spray)
      Fastener/Screw Terminology
    • Description : #12-14 x 1-1/4” DP2 Self-Drilling Screw. 5/16” Hex Washer Head. Undercut with EPDM Sealing Washer. Carbon Steel. Zinc Plated with 1,000hrs salt spray coating. Fastener/Screw Terminology Head Style Major Diameter Threads Per Inch Fastener Length Point Type #12 - 14 x 1-1/4” DP2 5/16” HWH Major Diameter Threads Per Inch Fastener Length Point Type Head Style
      • 2. “Fine” Thread
      • Use in thick metal
      • Slower to install.
      • Provides more thread engagement.
      • 1. “Coarse” Thread
      • Use in thin metal and wood.
      • “ Steep” thread installs faster.
      • “ Steep” thread loosens more quickly.
      Fastener Thread Types TWO GENERAL TYPES OF THREADS
    • Hex Head Pan Flat Wafer Hex Washer Flat Cuntersunk Head and drive systems for a variety of conditions Pancake Fastener/Screw Head Styles
    • Point Type Drilling Thickness DP1 Thin (.018” - .090”) DP2 Thin Medium (.035” - .140”) DP3 Medium (.090” - .250”) DP4 Medium/Heavy (.145” - .375”) DP5 Heavy (.250” - .500”) A - DP1 Light Gauge (Thin Metal) B - DP5 Heavy Gauge The thicker the material to be fastened, the larger the point “Type”. Self Driller Point Types B A
    • Stainless Steel Cap
      • Zinc and Aluminum alloy is compatible with sheet coatings.
      • Uncoated zinc head will oxidize and turn black in color.
      • Uncoated head will not turn black in color.
      • May react with Galvalume in severe coastal conditions.
      Zinc Cap / Cast Head Fasteners with 20 Year Warranties
    • Flange Seal Head Sealant Materials EPDM: Standard (Non conductive) Neoprene: Petrochemical
      • Optimal sealing performance when installed at an angle.
      • Provides greater pullover strength.
      • Nicer installed appearance.
      • Paint damage minimal.
      • More back-out resistance
      Bonded Washers Fastener/Screw Washer Types
      • Fastener Materials and Strength
      • Carbon Steel (C1018-C1022) case hardened
      • 410 stainless steel bright case hardened
      • Modified 304 stainless steel - Cold worked
      • 316 stainless steel - Cold worked
      Fastener/Screw Materials PSI (000) Material Strength
      • Material and Finish
      • 18-8 Stainless Steel (302, 304, 305, 316) - Passivated
      • 410 Stainless Steel – Passivated and Plated
      • 410 Stainless Steel – Passivated
      • Carbon Steel – Long-life Coated
      • Carbon Steel - Zinc Plated
      Increased Corrosion Resistance Fastener/Screw Corrosion Long Life Coated Stainless Steel Zinc Plated
    • 1/8” Pop Rivet Pop rivets are used to hold two pieces of sheet metal together, common at flashing laps, using a 2-Step method; Step #1 - 1/8” Hole is Drilled Through both Pieces. Step #2 - Insert Pop Rivet in Hole with Rivet Gun
    • Standing Seam Panel Clips
      • 1. Floating Clip:
      • Independent base and tab.
      • Used with panel lengths greater than 30’-0”.
      TWO GENERAL TYPES OF CONCEALED CLIPS
      • 2. Fixed Clip:
      • One solid piece.
      • Used with panel lengths less than 30’-0” or snap down panels .
      Note: Base of floating clip should be centered when installed.
    • Thermal Expansion & Contraction Definition: The natural characteristic of a length of metal to expand or contract relevant to a change in the metals temperature. Heat and sun expands/Cooling and shade contracts.
    • Sealants TWO GENERAL FORMS OF SEALANT
      • 1. Tube Sealant
      • Polyurethane based.
      • Average usage per tube of 25’-0”.
    • Sealants
      • 2. Roll/Tape Sealant
      • Double beaded butyl sealant
      • Roll lengths of 40’-0”.
      TWO GENERAL FORMS OF SEALANT
    • Roof Boots/Jacks Note: Silicone boots used on high temp penetrations.