GRP is a glass fiber reinforced plastic used to make architectural elements. It is a catalysed thermoset plastic composite that is durable, chemical resistant and has excellent weathering, flexural and tensile physical properties. This makes it a versatile material that provides cost effective solutions for the construction or renovation of buildings, particularly with respect to exterior applications. It is also a lightweight material, weighing approximately 10 kg/m2 which reduces transportation, handling and installation costs.

The back-up laminate consists of layers of glass fiber and polyester resin.  GRP composite material has a Class 1 (or A) fire rating. When GRP is molded into shapes, the geometry of the shape imparts physical properties to the parts, such as strength and stiffness. For example, the design profiles of GRP parts that include recesses, projections, grooves, curves or ornamentation make the parts stronger.

The nominal shell thickness of parts is 5  mm. However, areas of parts that have fiat regions are cast thicker by encapsulating core materials into the laminate that provide added strength and stiffness. 

GRP offers some unique advantages for Architects and Designers in providing the capability to make large parts in any shape and size that would otherwise require more costly support structures and increased installation costs (as compared to other materials such as precast concrete). The boat building industry has taken this to extremes where single piece boat hulls have been fabricated in excess of 150’

45m in length. It is of course more practical in most building applications to utilize much more modest sized components in consideration of the initial mold costs, shipping, handling, and installation methods to optimize project costs.

In most cases, GRP molded parts are secured to the building’s structural framing and substrate with concealed fasteners. Joints between parts should be minimized and advantageously positioned in consideration of part size and design, overall appearance, and installation. GRP parts are typically supplied with factory-molded corners to minimize field mitering.

Some typical architectural applications of GRP include facade panels, columns, cornices, pediments, storefront entries, cupolas and other decorative elements such as friezes and signage. GRP is also used in interior or exterior applications, where a high impact resistant and lightweight material is desired. Molded GRP products can replicate many common materials such as slate, cast iron, and wood grained surfaces to name just a few.

Most items are custom made to meet project design requirements and specifications. Nod uses CNC technology to machine precision patterns from which molds are produced to make the required parts. In situations involving complicated design elements or projects, Nod will work with Architects and Designers to create a practical plan for the parts and assemblies they envision through 3D modelling and/or scaled or full size mock-ups. Detailed shop drawings and material samples are prepared for approval prior to manufacture of molds or custom parts.