FRP Columns & Column Covers

What Are FRP Column Covers?

FRP column covers are fiberglass reinforced polymer covers made in halves so they can be installed around existing structural posts, porch posts, lally columns, or framed supports. This construction makes FRP useful for retrofit projects where the structural support is already in place but the project needs a finished architectural column appearance.

FRP covers are often chosen for large-diameter columns, tall shafts, commercial facades, decorative surrounds, and column wrap applications where a lighter material is easier to handle than heavier cast products. Larger FRP covers can also be reinforced with core mat to add thickness and strength when needed.

Although FRP column covers can look similar to cast fiberglass columns once finished and painted, they are a different product type. FRP covers are primarily designed as decorative covers around existing structural supports.

FRP column covers and cast fiberglass columns are both fiberglass-based architectural products, but they are made and used differently. FRP column covers are manufactured in halves so they can be reassembled around an existing structural post, porch post, lally column, or framed support. They are usually chosen when the support is already in place and the project needs a decorative architectural cover.

Cast fiberglass columns are a different product type. They are generally manufactured as full column shafts and are commonly used for porch columns, replacement columns, and load-bearing applications when specified for the project. They are typically thicker and heavier than FRP column covers and are better suited when the column itself needs to provide structural support.

Once installed and painted, FRP column covers and cast fiberglass columns can look very similar from a distance. The main difference is how they are made and how they are used: FRP covers usually wrap an existing support, while cast fiberglass columns are often used as full column shafts for new or replacement column applications.

For Full Structural porch column options, visit our Fiberglass Columns Page.

Frequently Asked Questions About FRP Column Covers

What are FRP column covers?

FRP column covers are fiberglass reinforced polymer covers manufactured in halves for reassembly around existing structural posts, porch posts, lally columns, or framed supports. They are used to create a finished architectural column appearance without removing the existing support underneath.

Are FRP column covers load-bearing?

FRP column covers are primarily designed as decorative covers and rely on an internal structural post or support system. Although FRP covers may be factory-joined or reinforced for certain applications, Architectural Mall generally recommends that a structural post or support be in place inside the cover. Load-bearing requirements should always be confirmed based on the specific column design, wall thickness, size, and project specifications.

Is FRP the same as cast fiberglass?

No. FRP and cast fiberglass are both fiberglass-based materials, but they are different product types. FRP column covers are manufactured in halves for installation around existing structural supports and are typically lighter and thinner. Cast fiberglass columns are generally single-piece shafts used for porch columns and load-bearing replacement applications.

Can FRP column covers wrap existing porch posts or lally columns?

Yes. FRP column covers are made in halves so they can be reassembled around existing porch posts, lally columns, framed supports, or other structural posts without removing the support underneath.

Can FRP column covers be used outside?

Yes. FRP column covers are moisture-resistant and dimensionally stable, making them suitable for exterior applications such as porches, porticos, commercial facades, large-diameter decorative columns, and covered outdoor spaces. The correct finish, installation method, and support system should be selected based on the project.

Do FRP column covers need to be painted?

Yes. FRP column covers are made with a marine-grade gel coat finish, but when the halves are assembled on site, they still need to be primed and painted to hide the seam and create a finished column appearance.

What sizes and styles are available in FRP column covers?

FRP column covers are available in a wide range of sizes and styles, including round tapered, round fluted, round non-tapered, twist rope, square non-tapered, square fluted, square tapered, and recessed panel configurations. Custom sizes and split configurations are also available for project-specific needs.

When should I choose FRP column covers instead of cast fiberglass columns?

Choose FRP column covers when an existing structural support is already in place and the project needs a lightweight decorative cover, large-diameter column appearance, tall shaft, retrofit solution, or custom architectural surround. Choose cast fiberglass columns when the project needs a full column shaft or a stronger structural porch column replacement option.