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3.5" Dovetail Deck
3.5D Dovetail

  • Dovetail Deck Catalog - Welded

    Download the Verco Dovetail Deck Catalog Below

  • Dovetail Deck Catalog - Screws

    Dovetail Deck Catalog - Screws

  • Request a Quote
  • Dovetail Deck Catalog - Pneutek Fasteners

    Dovetail Deck Catalog - Pneutek Fasteners

  • Dovetail Deck Catalog - Hilti Fasteners

    Dovetail Deck Catalog - Hilti Fasteners

  • IAPMO Report

    Download the Verco Dovetail Deck IAPMO Report Below

    Verco Dovetail Deck IAPMO Report
  • Attachment of Dovetail Deck

    Support Fastening

    DoveTail fluted deck panels are fastened to supports using one of two types of fasteners: mechanical fasteners (power actuated fasteners or self-drilling, self-tapping screws) or welds.

    HIlti Fasteners

    dovetail deck hilti fastenerThe Hilti X-HSN 24 fastener has a dome style head, red guidance washer and a 0.472 inch diameter steel silver-colored top-hat washer. It may be used where substrate thickness is equal to or greater than 1/8" and less than or equal to 3/8".

    The Hilti X-ENP-19 fastener has a fully knurled tip and tapered shank fitted with two 0.590 inch diameter steel cupped washers. It may be used where substrate thickness is equal to or greater than 1/4".

    Pneutek Fasteners

    dovetail deck pneutek fastenerPneutek SDK61, SDK63, K64, and K66 fasteners all have ½ inch diameter heads and must be driven with the Pneutek Air/Safe fastening system to ensure tight contact between the fastener head and attached deck.

    Pneutek SDK61 fasteners may be used where substrate thickness is equal to or greater than 0.113" and less than or equal to 0.155".

    Pneutek SDK63 fasteners may be used where substrate thickness is equal to or greater than 0.155" and less than or equal to 0.250".

    Pneutek K64 fasteners may be used where substrate thickness is equal to or greater than 0.187" and less than or equal to 0.312".

    Pneutek K66 fasteners may be used where substrate thickness is equal to or greater than 0.281".

    Pneutek fasteners are to be installed per manufacturer specific guidelines.

    Self-Drilling Screws

    dovetail deck with self drilling screwAll #12 self-drilling, self-tapping screws must be compliant with ASTM C1513. Screws must meet the listed shear and tension strength requirements in Tables 1 and 2. It is assumed that screws are installed into supports at least 0.109" (7/64") thick which is the minimum thickness used on the top chord of Vulcraft joists. Support material thickness impacts the pull-out capacity of a screw subjected to tension loads. To evaluate diaphragms utilizing screws into supports other than 0.109" (7/64") thick, please contact your sales representative.

    Arc Spot Welds

    dovetail deck arc spot weldWhen DoveTail deck is to be welded to supports, the visible weld diameter is to be at least 3/4" for arc spot (puddle) welds. Arc spot welds in acoustical DoveTail deck require a minimum of 7/8" visible weld diameter.







  • Sidelap Attachments

    Attachment of Dovetail Deck Sidelaps

    Self Drilling Screws

    dovetail deck sidelap self drilling screwsSelf-drilling screws are the most common, easiest to install, and aesthetic method of connecting the sidelap of DoveTail deck. The deck may be lapped with the short leg on the top as shown, or with the short leg on the underside. In either orientation, the minimum edge distance for the screw must be 1-1/2 times the shank diameter of the screw.


    Arc Seam Welds

    dovetail deck arc seam weldDoveTail deck sidelaps may be attached with arc seam welds. This is a high strength connection that may be used when high diaphragm shears are required. This is generally not the preferred sidelap connection due to the need for highly skilled welders and slow production rates. It is common to have burn through holes in the deck when installing arc seam welds at sidelaps.



  • Roof Deck Finishes

    Roof Deck Finishes

    DoveTail fluted deck panels are available in two finishes: galvanized and primer painted over galvanized.

    Galvanized - galvanized deck panels are supplied from mill coated sheets and are offered with coating designation G90.

    Primer painted - prior to applying an acrylic medium gray or white primer, the galvanized steel sheet is cleaned and treated.

    Primer paint is intended to protect steel deck for a short period of exposure in ordinary atmospheric conditions. It should be considered as an impermanent and provisional coating.

    Minor aesthetic irregularities and/or imperfections may appear in the paint coating as a result of the manufacturing, shipping, and handling process.

    Due to varying job site conditions, application methods, coating formulations, environmental conditions and expectations, it is essential to conduct a field test to determine compatibility of the field applied top coat prior to full scale painting. It is the painter's responsibility to determine top coat compatibility.
  • Fire Ratings

    Fire Rated Dovetail Deck (UL)

    DoveTail roof decks may be used in assemblies which are required to meet hourly fire ratings. Hourly fire rated assemblies are a combination of specific proprietary materials as listed in the UL fire resistance directory. The fire resistance directory can be found at www.ul.com. Navigate to the Online Certifications Directory and search for Fire-resistance-rated Systems and Products.

    Table 2 lists the UL fire-rated assemblies utilizing DoveTail roof deck profiles. For full details of construction including specific information about fill or fireproofing thickness and span limitations, refer to the particular UL assembly listed in Table 2. Note that P9XX series assemblies do not require fire proofing on the deck, only on the steel support members.

    Fire Resistance Rating for Dovetail Deck
deck weight and section properties

3.5" Dovetail Deck

3.5D Dovetail

Verco 3.5D Dovetail deck is offered with a variety of options to meet a broad range of project requirements. Options for Verco and Vulcraft Dovetail deck include acoustical as well as non-acoustical versions, a variety of finishes including galvanized or primer painted over galvanized. The 3½ inch Dovetail deck is offered in up to 14 gage, to provide the greatest possible capacity.

Information about the gravity load, wind uplift, diaphragm shear loads, and attachment of 3.5D DoveTail deck to supports is available below in downloadable catalogs with information about welds, screws and power actuated fasteners (PAF’s).

Route trucks run throughout the country on a weekly or monthly basis depending on your location. Verco Dovetail can be shipped very inexpensively. Please click below for a Quote or Call 877-787-5467.

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