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National Register Plaque mounting methods

General information for mounting

Mounting holes

The number of 'through holes' or bosses and studs in a plaque are determined by production at the time a plaque is cast. Typically, plaques with either dimension 4" and under will be drilled for 2 holesor have 2 threaded bosses.

Back (flat or recessed)

Recessed back plaque

Recessed back plaque - This image shows the cross section of a large plaque. The back is recessed to reduce weight.

Flat back plaque

Flat back plaque - This image shows the cross section of a small plaque. It is solid.

The type of back on your plaque will depend upon the size of the plaque. We reserve the right to determine the type of back during the casting process.

Inset Mounting of National Register Plaques

Any mounting hardware shown below

We are asked many times about mounting a National Register Plaque inset into brick, stone, concrete or other solid material. This is simple when the plaque has a constant outline, like a rectangle or oval, but can be quite a challenging taks if the outline is ornate like our Victorial Style design. In all cases, the dimensions of the inset (depth, width and height) must allow for the finished dimensions of the plaque itself as well as grouting around the plaque.

FINISHED DIMENSIONS - Bronze plaques are cast from molten metal. As such, the finished dimensions WILL vary from the actual dimension ordered. Typically, the metal can shrink 1/16" over any 12" dimension. This means that a 24" by 24" plaque can vary in size from 24" by 24" plus or minus 1/4" - possibly more. You should always wait until you have the actual plaque in your hands BEFORE you build any custom mount. If this is not possible, you must allow sufficient room around the plaque to accommodate differing dimensions. If you will mount the plaque in concrete, allow enough room and plan on filling it with a grout. If mounting on a raised monument, allow sufficient room and plan on centering the plaque.


Hidden Mounting (preferred for ornate plaques)

Boss and Stud

Boss and Studs for National Register plaquesDrilled and tapped bosses on back of plate. Threaded studs for concealed mounting to brick, stone or cement. Flat backed plaques do not have bosses - they have drilled and tapped holes.

HOW-TO-DO-IT

  1. Screw studs into threaded bosses (threaded holes) in back of the plaque.
  2. Using studs to locate points on mounting surface, drill holes in mounting surface slightly larger than threaded stud.
  3. If wall is solid such as cement or brick;
    1. Discard washers and nuts. Fill holes using 'Liquid Nails', 'Epoxy' or other permanent mastic.
    2. Push studs into the holes and anchor plaque until mastic hardens.
  4. If you can get to the back of the wall;
    1. Insert studs through holes and have it held in place.
    2. From the rear, place washers on studs and secure with nut

Mounting on solid walls or similar objects

Machine Screws and Expansion Sleeves

Machine screws and expansion sleeves for National Register plaquesExpansion sleeves are used for mounting to brick, stone or cement or other solid surface. They can also use optional rosette covers if an ornate mounting is desired. If rosetes are not requested, we will paint the toggle bolt heads the color of the background, so they blend in with the plaque.

HOW-TO-DO-IT

  1. Using holes in plaque to locate points on mounting surface, drill holes in mounting surface to accommodate expansion sleeve.
  2. Insert expansion sleeves into all holes.
  3. Insert screws through plaque and fasten into expansion sleeves.
  4. Screw on decorative rosette

Mounting on hollow walls

Machine Screws and Toggle Bolts

Machine screws and toggle bolts for National Register plaquesToggle bolts are used for mounting to hollow surfaces. They can also use optional rosette covers if an ornate mounting is desired. If rosetes are not requested, we will paint the toggle bolt heads the color of the background, so they blend in with the plaque.

HOW-TO-DO-IT

  1. Using holes in plaque to locate points on mounting surface, drill holes in mounting surface to accommodate toggle bolts.
  2. Insert machine screws through plaque and screw toggle bolts onto machine screws.
  3. Tighten machine screws.
  4. Screw on decorative rosette.

Mounting on wood or similar material

Rosettes and Wood Screws

Rosettes and wood screws for National Register plaquesWood screws are used for mounting to wood surfaces. They can also use optional rosette covers if an ornate mounting is desired. If rosetes are not requested, we will paint the screw heads the color of the background, so they blend in with the plaque.

HOW-TO-DO-IT

  1. Using holes in plaque to locate points on mounting surface, drill pilot holes in mounting surface if desired.
  2. Insert screws through plaque and tighten.
  3. Screw on decorative rosette