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Fiberglass Rodding

Rodding countertops at the weakest point, i.e., at cutouts, can significantly reduce waste and breakage when moving and installing the countertop.

The Marble Institute of America published a “Detail of Rodding Reinforcement” in 2005, which recommends that reinforcing rods be made of “stainless steel, mild steel, or fiberglass.” Expert suggest that you reinforces your stone with stainless steel due to its strength. 

Fiberglass is a great choice because it does not rust. Providing you with peace of mind from stains becoming apparent on your stone.


  • After cutting the stone to size, lay out the piece for additional cutouts such as sinks, cooktops, faucets, outlets, notches and other cutouts.
  • Once you have completed the layout of any cutouts, then lay out thelocation(s) for the rod(s). Be sure that the rod(s) will extend beyond the cutout area by at least a couple inches on each side.
  • Place the top face down on a smooth, soft, flat and clean surface on a work or saw table.
  • Select a blade that is 1/8 inch thicker than the 3/8 inch width of the rod or make two passes on your cut.
  • Mark the blade about 1/8 inch deeper than the depth of the rod.
  • Cut the rod slot in the marked section on the bottom of the stone. Be sure to extend your cut far enough for the full length of rod to fit in (allowing for the curve of the blade) Cutting granite countertops takes patience.
  • Check the rod in the slot to verify the fit.
  • Remove the rod with a putty knife or a regular screwdriver. 
  • Clean the stone and allow it to thoroughly dry.
  • Abrade the rod with a course grit abrasive, clean it, and allow it to thoroughly dry.
  • Fix a flowing consistency adhesive, and pour it into the slot of the stone (polyester or epoxy).
  • Quickly insert the rod fully into the slot. Then wipe the excess adhesive over the slot to completely cover the rod.
  • Allow the adhesive to cure completely before moving the stone.
  • Rodding takes time but adds very little to the granite cost. The value of this form of insurance is priceless and every fabricator should include rodding in their countertops.