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Concrete Casting: Countertops

Mold Rubbers for Concrete CountertopsPolytek® two-part, room temperature curing mold rubbers can be used to create the entire shape and texture of concrete countertops, or, in conjunction with rigid forms, can be used to create individual countertop elements. These include sink inserts, decorative edging and trim strips, drain boards and much more. 

Popular product options are listed below:

The polyurethane mold rubbers listed below are pourable, but can be thickened with PolyFiber II or Fumed Silica to make brush-on molds. 

Select an option below for additional product details and buying information or browse all polyurethane mold rubbers or silicone mold rubbers:



Product Description

Poly 74-45 Liquid Rubber

A mid-range hardness polyurethane rubber popular for edge strips and full tabletops. This product has a simple 1A:1B mix ratio and a demold time of 16 hours.

Poly 75-65 Liquid Rubber

A medium-hard polyurethane rubber popular for sink shapes and other plugs. This product has a simple 1A:1B mix ratio and a demold time of 16 hours.

How-To Articles & Customer Projects

Mold Rubbers for Concrete Countertops
Mold Making Tutorial: Old-Growth Cypress Concrete TableTop
We recently visited SureCrete Design Products, a decorative and specialty concrete manufacturer, at their headquarters in Dade City, FL.