Welcome to Plasterers Local Union 31
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Plasterers' Local Union No. 31 Craft Jurisdiction:

  1. All interior and/or exterior plastering of cement, stucco, stone, imitation or any patent material when cast, the setting of the same, also corner beads when stuck must be done by practical Plasterers' of the O.P. & C.M.I.A. This includes the plastering and finishing with hot composition materials in vats, compartments, or wherever applies; also the taping and pointing of all joints, nail holes, and bruises on wall board, and/or drywall, regardless of the plasterboard, ground blocks, patent dots, cork plates, brownstones, and acoustical tile including temporary nailing, cutting, and fitting in connection with the sticking of the same, regardless of the methods used.

    All acoustic blocks when stuck with any plastic materials, regardless of thickness, shall be the work of the plasterer only. Also, the sticking, nailing, and mechanically fastening of all composition caps, ornaments, and cornice. The preparing, scratching and browning of all ceilings and walls when finished with terrazzo, or tile shall be done by Plasterers of the O.P. & C.M.I.A., allowing sufficient thickness to allow the applying of the terrazzo or tile and the application of any plastic material to the same must be done by members of the O.P. & C.M.I.A., who are practical Plasterers. The preparation, installation and repair of all interior and exterior insulation systems, including, but not limited to, foam systems (E.I.F.S.), bead boards, outsulation, ultration, lead abatement, encapsulation and all fireproofing including Intumescent Fireproofing, and refraction work, including, but not limited to, all steel beams, columns, metal decks, and vessels shall be the work of the Plasterers, regardless of the materials, methods and tools used.
  2. All direction governing the mixing of all materials used by the Plasterers shall not deviate from the manufacturers' standards or the specifications of the American Standards Association.
  3. The pointing, taping, and covering of all Veneer Coat systems in its Entirety (thin coat) regardless of materials, methods and tools used, such as "Kal-Kote", "Diamond", "Imperial", pigmented, or glaze coat products shall be the work of the Plasterers'.
  4. Pointing and taping, regardless of material, methods and tools used, of drywall surfaces, which are to receive plaster, acoustic or imitation acoustical finishes shall be the work of the Plasterers'.
  5. All skimcoating where the surface produced by the application of the same plastic pointing materials as used in the pointing and taping of the joints to the entire drywall surface for the purpose of producing a uniform surface compatible with the pointed and taped joints shall be considered a plaster finish, and the pointing and taping in connection therewith shall be the work of the Plasterers'.
  6. The pointing, taping, and covering of all drywall board in its entirety, by spray or hand applied finish, regardless of the materials used such as "Q.T.", "Aristex", pigmented or clear glaze coats finished to produce a uniform surface free of irregularities shall be the work of the Plasterers'. All Fire-Taping shall be the work of the Plasterers'. This however, does not include the preparation of drywall board and ceilings, which are to receive paint or vinyl covering only.
  7. All interior and exterior systems using acrylics, epoxies, urethanes, polyesters, etc., which shall be named (Construction Chemicals) when used with cement or plaster base materials in its entirety, such as "cotta", "Dryvit", "Parex", "Sto", or any other type systems now being used in construction for all types of walls and ceilings. Any new materials when used for the same purpose regardless of methods, tools, machine or hand-applied, shall be the work of the Plasterers'.
    1. This also applies to the installation of Styrofoam boards when used in conjunction with the above named systems when applied regardless of methods, tools, and materials used shall be the sole work of the Plasterers.
    2. All preparations and materials of this nature (Construction Chemicals) when used for the remolding, repairing of either old or new construction of ceilings and walls (interior and exterior) regardless of the methods, tools, and materials used shall be the sole work of the Plasterers'.
  8. All casting work, the applying of any plastic material to soffits, ceilings, and perpendicular work, and the finishing, rubbing, polishing, and cleaning, whether done by hand, machine, or any other method, is recognized as the work of the Plasterer, except a base six (6) inches or less. No member of the O.P. & C.M.I.A. shall be allowed to work to any corner beads that are put on beams, arches, or groin ceilings unless same are stuck by the Plasterer. This includes window heads and door heads.
    1. Domes that do not exceed two (2) feet in diameter may be cast. Niches may be cast and stuck in place providing they do not exceed two (2) feet in width and four (4) feet in length.
    2. Moldings clustered with enrichment may be cast.
    3. Cornices may be cast where and when it is not practical to run in place with a Template. This has reference principally to light troughs, etc., that require electrical wiring or reflectors inside, and this does not include block or similar moldings that exceed six (6) feet in total length from miter to miter.
    4. Beams, columns, and pilasters shall not be cast unless they are totally enriched and have no members paralleling one another.
    5. On an alteration where the work which would ordinarily be run, cannot be done without causing interference with the occupancy of the premises, and undue delay in performance it shall be permissible to cast such work with the consent of Local Union No. 31.
    6. All small spandrels or panels under two (2) feet, small caps, and other similar work may be cast.
    7. All caps not exceeding two (2) feet in diameter may be cast.
    8. Diminished fluted pilaster and columns or pilaster and columns with entasis may be cast.
    9. Small pattern ceilings of geometrical design; coffered ceilings when panels do not exceed twenty-four (24) inches at the ceilings minor line and fifty-four (54) inches at the bottom or major line may be cast.
    10. Plasterers shall also have jurisdiction over all work processes, which represent technological change, replacement, modification or substitution for the work described above.
  9. All cement plastering shall be supervised and executed by the Plasterer on walls, over and above a six (6) inch base.
  10. All waterproofing of work included in the Union's jurisdiction, such as Thoroseal, Ironite, Plasterweld and any similar products, regardless of the tools used, or method of application, color of materials used, and regardless of the type base these materials apply to shall be the sole work of the Plasterer.
  11. All casting, installing, finishing, rubbing, mitering, and cleaning, whether by hand or machine of all imitation stone shall be the sole work of the Plasterer.
  12. All moldings run in place, all staff work and all mitering, the making of templates and horsing of molds in and on buildings must be made and produced by members of the O.P. & C.M.I.A. All mortar boards must be raised at least eighteen (18) inches above the scaffold.