Concrete Drainboard Insert Mold – Grill PNL Liners

Concrete Drainboard Insert Mold – Grill

• Mold Measurements:
  • 13 7/8″ Wide (at sink)
  • 11 7/8″ Wide (end opposite sink)
  • 17 15/16″ Long
  • 1/4″-1/2″ Sloped Height.
• Raised Slot Channels are 1/2″ Wide, 1/8″ High (at sink), 3/8″ High (far end).
• *Occasional imperfections may be present on Rubber Molds, and can be removed or altered using a sharp utility knife, or a very abrasive sand paper or resin-bound grinding discs.

Concrete Drainboard Insert Mold – Grill

• Rubber Drain Board insert for use with concrete countertop fabrication.
• The Grill Drainboard has 3 raised areas in the mold, which create recessed channels in the finished concrete.
• The recessed channels can be left as drainage channels, or inserted with three 1/2″ square bar stainless steel trivets:
•  Rubber Safe form release is recommended, and will create a smoother finish on the concrete, less air pockets, and make cleaning the rubber mold easier when finished.
• Vibrate concrete well (either vibrating the concrete, or rapidly tapping the edges of the forms with a hammer or palm sander), to remove as many air pocket voids as possible.

Drainboard Mold Removal:

• After the concrete is sufficiently set up (typically 2-3 days for precast), flip the concrete piece over and remove the Drainboard Mold. In many cases, the mold will stay siliconed to the form when separated from the concrete.
• Concrete may have small ‘bumps’ which can be sanded off with a 200 grit sandpaper. These bumps tend to disappear the more the Rubber Drainboard Mold is used, as it becomes seasoned.
• Fill any air pocket voids with a Concrete Slurry Mix.

Rubber Mold Care:

• Clean with a stiff brush and water after each use. Any silicone left on the forms should be peeled or scraped off (the sooner the easier to remove). Any hardened concrete and difficult to remove silicone can usually be removed using a wire brush.
• Muriatic Acid can be used to clean of cement residue from the rubber mold in a 20:1 ratio (20 parts water to 1 part muriatic acid). Rub the Drainboard Mold with a stiff nylon brush and the muriatic acid water. Rinse the mold thoroughly with clean water.
• Store rubber molds out of direct sunlight, laid out flat.