Precast Concrete - Architecture

Use Polytek® liquid rubber to manufacture flexible rubber molds of original architectural elements for reproduction

Architectural precast producers and restoration specialists use Polytek two-part, room temperature curing mold rubbers to make molds of original or aging architectural elements which are then reproduced in concrete. Rubber molds are often used to produce concrete brackets, decorative panels, medallions, cornice molding, balusters, columns and more.

Polytek offers pourable, brushable and sprayable mold making options. 

Explore Product Options Below:

Popular Polyurethane Products:

Poly 74-20 Liquid Rubber

A soft polyurethane rubber popular for making molds of models with deep, irregular undercuts. This product has a mix ratio of 1A:2B and a demold time of 16 hours.

Poly 74-45 Liquid Rubber

A mid-range hardness polyurethane rubber popular for making molds of models with moderate undercuts. 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 making molds of models with little to no undercuts. This product has a simple mix ratio of 1A:1B mix ratio and a demold time of 16 hours.

Polygel® Brush-On 35 Rubber

A self-thickening mold rubber ideal for vertical or overhead application as well as larger models. A spray version is also available.

Browse All Polyurethane Rubbers

Learn more or browse all of Polytek's room temperature curing polyurethane rubbers below. 

Popular Silicone Products:

PlatSil® 73-29 Silicone Rubber

A medium hardness (Shore A30), platinum-cured silicone rubber that does not require form release. Can be thickened with PlatThix Liquid Thickener or Fumed Silica to make brush-on molds.

PlatSil® HTS-25 Silicone Rubber

PlatSil® HTS-25 Silicone Rubber is a high-performance, platinum-catalyzed silicone with excellent tear strength, tensile strength and elongation properties.

PlatSil® HTS-25 Fast Silicone Rubber

PlatSil® HTS-25 Fast Silicone Rubber is a high-performance, platinum-catalyzed silicone with excellent tear strength, tensile strength and elongation properties. This silicone features a fast demold time of ~3 hours for quick turnaround.

PlatSil® HTS-40 Silicone Rubber

PlatSil® HTS-40 Silicone Rubber is a high-performance, platinum-catalyzed silicone with excellent tear strength, tensile strength and elongation properties.

Browse All Platinum-Cured Silicone Rubbers

Learn more or browse all of Polytek's room temperature curing, platinum-cured silicone rubbers below.

Application Examples

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