CIOB member launches low-carbon concrete alternative

Estimated reading time: 5 minutes · Last updated: 2 September 2026

Roger Carter, a Chartered Institute of Building (CIOB) member, is bringing Polibeam to market as a low-carbon concrete alternative aimed at beam-and-block floors. Polibeam was created by Bow Gill and is being marketed by Polibeam Ltd.; it is described as a pre-finished, pre-insulated beam that drops into place and can carry the same load as concrete. Polibeam is, as first reported by Construction Management, said to be the first of its kind to secure a global patent and currently has an Agrément Certificate pending. The product is pitched to reduce water use, cutting waste from combined insulation and concrete processes while easing handling on site.

Traditional concrete beam-and-block flooring is heavy, difficult to handle, uses a lot of water and also generates considerable waste, particularly when combined with insulation products,

Roger Carter

How Polibeam is designed to replace beam-and-block flooring

Polibeam is described as a factory-made beam that arrives pre-finished and pre-insulated, intended to slot into floor frames in place of traditional concrete beam-and-block units. The design removes the separate on-site steps of installing insulation and handling heavy wet concrete, which the promoters say cuts labour and site waste. In practical terms, the system is pitched to reduce the use of water on site and to lower the volume of construction waste arising where insulation is later combined with concrete elements.

The product is claimed to meet the same load requirements as conventional beam-and-block floors. Polibeam Ltd. positions the element as a drop-in replacement for those applications where a comparable structural capacity is required, while offering lighter handling for installers and earlier weatherproofing of subfloors because finishing arrives from the factory.

Why developers and contractors might consider it

Roger Carter frames the market case around embodied carbon and on-site waste. He says traditional beam-and-block floors are heavy, difficult to handle and generate considerable waste when combined with separate insulation products. The Polibeam approach, as Carter presents it, aims to simplify the sequence of works and reduce the carbon intensity embedded in a floor by moving more of the process into a controlled factory environment.

Carter acknowledges there will be some reticence among contractors and specifiers when a long-established material is challenged, but he compares the shift to industry moves away from copper piping in heating. The package offered to early adopters is therefore as much about installation efficiency and waste reduction as it is about carbon accounting, with social housing and projects facing tougher embodied carbon rules flagged as immediate markets.

Certification, IP and the path to wider use

Polibeam is promoted as the first product of its kind to secure a patent globally, and an Agrément Certificate is pending, details that underwriters and specifiers will watch closely before acceptance on larger housing or public-sector programmes. Certification such as an Agrément is commonly required in the UK to give designers and contractors confidence in a novel structural product; without it, wider uptake will depend on demonstration projects and test evidence.

The company points to factory control and factory-installed insulation as routes to consistent thermal performance and reduced on-site waste. Market rollout will hinge on completing technical approvals and producing case-study installs that prove the product can meet load and acoustic requirements on typical floor builds. For context, the Construction Management page carrying the report also lists a Cherwell District Council job (ID 144907) with a salary of £66,800.50–£71,343.00 and several other job adverts (IDs 148913, 148912, 148911, 148910 and 148909); the site shows a July/August 2026 digital edition and a Diary dates: What’s on in September 2026 link alongside the Polibeam item.

Outlook for adoption

The bottom line

Polibeam is presented as a practical entry in the market for lower-carbon floor solutions: a pre-insulated, factory-finished beam that claims comparable load capacity to concrete while reducing handling and waste. The launch is backed publicly by Roger Carter and credited to Bow Gill and Polibeam Ltd., and the company points to a global patent plus a pending Agrément certificate as milestones that will decide how quickly specifiers adopt the product. Short-term uptake will depend on certification, published test data and demonstration projects that convert the product’s handling and embodied-carbon claims into accepted practice.

What to watch

• Watch for the outcome of Polibeam’s Agrément certification decision; no date has been set.
• Watch for a published case-study or demonstration site from Polibeam Ltd.; no date has been set.