The Tool Desk
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Encasement’s Verta column casings are decorative coverings for structural columns, specified in different materials, profiles, sizes and finishes. The right choice depends on where the column is, what shape it needs to take, how it will be used and whether it needs access for inspection or maintenance; there is no single Verta specification that suits every project.
The range includes interior-only MDF, plywood and GRG options, alongside metal and GRP casings for interior or exterior use. This guide explains how to compare those families, what the published Circa and Forma dimensions do—and do not—tell you, and why a decorative casing must not be treated as structural fire protection.
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What does a Verta column casing do?
A column casing conceals a structural column behind a finished outer surface. It can help coordinate the column with the surrounding interior or façade, and can be specified in a profile that suits the design rather than leaving the structural shape exposed. Encasement describes Verta as a family of project-specified casings, with standard and bespoke forms and a supply-and-install service. See the manufacturer’s Verta overview and column-casing information.
That decorative role is important to distinguish from the column’s structural function. The casing is a finish around the column; the available information does not establish that a Verta decorative casing strengthens, supports or protects the structure. If a project has fire, impact, acoustic, hygiene or other performance requirements, include them in the specification and confirm what the selected product and complete assembly can actually provide.
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Which Verta material family suits the project?
Start with the installation location, then compare the required profile, finish, dimensions and maintenance needs. The five Verta families use different materials and have different stated applications, so do not assume a finish or use permitted for one family also applies to another.
| Family | Material and form | Stated application | Useful selection questions |
|---|---|---|---|
| Circa | Pre-formed MDF; circular and semi-circular options | Interior only | What diameter and finish are needed? Should it be supplied unfinished for site decoration? Is an extended-circle profile needed to conceal adjacent services or steelwork? |
| Quadra | Pre-formed plywood; square or rectangular casings | Interior only | What dimensions and finish suit the space? Does the project need a particular or bespoke shape? |
| Forma | Aluminium, stainless steel or steel; circular, square, rectangular, hexagonal and bespoke forms | Interior or exterior | Which metal and finish suit the exposure and appearance? Are collars, lining or access provisions required? |
| Polyma | Moulded glass-reinforced polymer (GRP) | Interior or exterior | What form, dimensions and finish are needed, and what conditions will the casing face? |
| Gypra | Moulded glass-reinforced gypsum (GRG), including bespoke forms | Interior only | What profile and project-specific specification are required? |
These are starting points, not a substitute for product-specific confirmation. The manufacturer’s product information identifies the families and broad applications; confirm the current options for the selected product before writing them into a project specification.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchCirca and Quadra: interior profiles in sheet materials
Circa is the circular or semi-circular pre-formed MDF option. It is intended for interiors and can be specified with a laminate finish or unfinished for painting on site, according to Encasement’s Circa product article. Its extended-circle form can help conceal adjacent services or steelwork as well as the column itself. That makes the required coverage an early design question: a standard circular casing and an extended profile do not solve the same coordination problem.
Quadra uses pre-formed plywood for square or rectangular casings and is also described for interior use. The available data does not provide a standard dimension range for Quadra, so do not derive one from Circa’s figures or assume that every rectangular size is available off the shelf. Ask for the project’s actual dimensions and shape to be checked against current manufacturing options.
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Forma: metal casings for varied profiles
Forma offers a wider set of stated profiles: circular, square, rectangular, hexagonal and bespoke. Encasement’s article describes Forma as available in aluminium or stainless steel for the listed forms, while its brochure also documents steel as a material option. The manufacturer’s exact statement is that “Available in aluminium or stainless steel, Forma casings can be specified in circular, square, rectangular or hexagonal forms, as well as unique custom profiles.” Treat that as a product-specific description, not a promise that every metal, profile and finish can be combined in every size. The October 2024 column-casing brochure provides further Forma examples.
The brochure lists metal thicknesses from 1.5 to 3 mm, standard lengths up to 3000 mm depending on size, and brushed, polished or PPC finishes. It also documents optional head and skirting collars, 6 mm or 20 mm internal acoustic lining options, and the ability to stack individual casings for greater heights. These are published options, not universal specifications: confirm availability and suitability for the particular column, exposure and design. A stacked arrangement, for example, needs to be considered in the context of the full-height appearance and the project’s installation details.
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Polyma and Gypra: moulded alternatives
Polyma is a moulded GRP casing described for both interior and exterior use. Gypra is moulded GRG and described for interior use, with manufacture to individual specifications and bespoke shapes. These descriptions make the two useful families to consider when a project needs a moulded form, but the available source material does not provide universal size, thickness, finish or performance ranges for either. Get the relevant product information for the intended shape and location rather than assuming the broad material description settles those details.
What dimensions and specifications are published?
Two examples help frame an enquiry, but neither should be applied to the entire Verta range. Encasement’s June 2025 Circa article describes pre-formed MDF casings in diameters from 250 to 800 mm, made from 9 mm thick UKTR-compliant material. The article also describes laminate finishes, an unfinished option for on-site painting and extended-circle designs. Confirm the current Circa specification and exact measurement convention with the manufacturer before using those figures in drawings or schedules.
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For Forma, the October 2024 brochure lists metal thicknesses of 1.5–3 mm and standard lengths up to 3000 mm, depending on size. It notes that individual casings can be stacked for greater heights. These values are Forma examples only; they do not set the maximum height or material thickness for every metal casing, let alone for Circa, Quadra, Polyma or Gypra.
For a specification, record the actual column dimensions and required finished envelope, including any clearance or adjacent services that affect the shape. Then ask the manufacturer to confirm the proposed casing’s material, thickness, joints or stacking arrangement, finish, and any collars or lining. Product details can change, and bespoke work is project-dependent; the source documents do not establish a universal dimensional schedule for all Verta families.
How should you choose a finish?
Choose a finish by considering location, exposure, wear and design intent together—not by selecting a colour or surface in isolation. Encasement’s column-casing finishes guide directs specifiers to check the options for the individual product and to contact the technical team where a particular requirement needs confirming.
- Interior or exterior: first check that the family is stated for the intended location. Circa, Quadra and Gypra are described for interiors; Forma and Polyma can be used inside or outside. Confirm the finish and product’s suitability for the specific exposure rather than treating “exterior use” as a complete environmental specification.
- Shape and coverage: decide whether the casing should follow a round, square, rectangular or other profile, and whether it must cover adjacent services or steelwork. For Circa, an extended-circle option is specifically described for additional coverage.
- Appearance: establish how the casing relates to nearby materials, lighting and the design palette. Published examples include laminate and unfinished-for-painting Circa options, plus brushed, polished and PPC finishes for Forma metal casings. Confirm the range and availability for the selected product.
- Wear and upkeep: describe the location’s likely use and cleaning or maintenance expectations in the brief. The available data does not establish a universal durability rating across the range, so request product-specific advice rather than inferring performance from the material name or finish.
- Access: identify inspection points, services or equipment that must remain reachable. Encasement’s Lime Wood Primary School account describes bespoke Forma aluminium casings, with removable access panels on some units. That is a project example, not evidence that every casing includes access panels; specify and confirm the requirement for each relevant location.
A useful finish brief states the product family, location, profile and dimensions, desired appearance, exposure and wear conditions, and any access or compliance requirements. Include samples or a reference finish if the project depends on a close visual match, and obtain confirmation that the chosen finish is available for the specified casing.
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Does a Verta casing provide fire protection to the column?
No: a decorative casing’s fire classification must not be treated as evidence that it protects the structural column. Encasement explicitly says that products classified as Class 0 under BS 476:Part 6 should be regarded as providing no fire protection to structural columns or building components; consult its column-casing information and the relevant project documentation.
If the design needs structural fire protection, specify that requirement separately and obtain evidence for the system intended to meet it. Metza is a separate fire-resistant casing system described primarily for mezzanine floor support columns. It is not one of the decorative Verta families, and its existence does not change the fire-protection status of a Verta finish casing. The project’s fire strategy and applicable compliance requirements should determine the solution.
What should the project team prepare before asking for a quotation?
Encasement describes a supply-and-install service for Verta projects. A clear project enquiry helps establish whether a standard or bespoke casing is appropriate and what needs to be confirmed; the available information does not publish current prices, lead times or geographical limits, so request those directly for the project.
- Identify each column: provide its shape, dimensions and required finished profile. Include drawings or schedules where available.
- State the location: say whether it is interior or exterior and describe relevant exposure or use conditions.
- Set the design requirements: name the preferred material family, profile and finish, and whether the casing must coordinate with adjacent finishes or conceal services.
- Flag access and interfaces: identify inspection or maintenance access, adjacent equipment, collars, skirting or head details, and any acoustic lining requirement that needs consideration.
- List compliance requirements: state applicable project specifications and performance requirements, especially where fire protection is required. Do not use a decorative casing classification as a substitute for structural fire protection.
- Confirm supply and installation scope: ask what the proposed package includes, the current programme and commercial terms, and what site information or preparation is required.
Project examples can help prompt questions, but they are not guarantees. At Gatwick, a 2014 installation account describes Circa casings with a project-specific combination of plywood, laminate and brushed stainless-steel finishes; it is an illustration of a particular project, not a general performance claim for all sites. The Gatwick account and the Lime Wood Primary School example are useful references for discussing visual coordination and access requirements with the project team.
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Frequently Asked Questions
Can a Verta casing be fitted around an existing column?
The supplied product information describes project-specified casings but does not set out a universal retrofit method or tolerance. Send the existing column’s measured profile, site constraints and any obstructions to the manufacturer so the proposed casing and installation approach can be confirmed.
Can I get a Verta casing in a colour or finish not shown in a standard range?
Availability depends on the casing family and project specification. Encasement’s finishes guide recommends checking options for the individual product and contacting its technical team about particular requirements; do not assume a finish offered for one material is available for another.
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How much do Verta column casings cost, and how long do they take to supply?
The cited product and brochure sources do not give current prices or lead times. Request a project quotation with the column schedule, dimensions, material and finish requirements, access details, location and requested installation scope.
Are the Gatwick casings proof that Verta products last outdoors for ten years?
No. The Gatwick account is a report about a particular installation and a specific combination of materials and finishes; it is not a general warranty or performance guarantee for every Verta family, finish or exposure. Confirm suitability and durability for the actual project conditions.
