NXT Bricks are a type of masonry unit produced using a circular material approach. Approximately 85% of each brick consists of recycled mineral waste, primarily sourced from demolition and residual construction materials. This composition contributes to resource efficiency by reintroducing secondary raw materials into the building process.

The manufacturing method differs from traditional brick production. Instead of being fired at high temperatures, NXT Bricks are produced through a cold-curing process that involves chemical hardening. During this process, carbon dioxide is absorbed and stored within the material. As a result, the overall energy demand is lower, and the process contributes to carbon storage.

Each brick has a standard size of 210 × 100 × 50 mm. The compressive strength is measured at 18 N/mm², and the bending strength at 4.00 N/mm². The volumetric mass is approximately 1950 kg/m³. Additional properties include UV resistance in accordance with DIN 51094 and verified freeze-thaw resistance, as tested by SGS. These characteristics ensure performance that meets standard requirements for use in masonry applications.

The material can be coloured during production, allowing for variations in appearance. Bricks are available in several colour options, including natural earth tones. Matching stone strips are also available to support façade and detailing work.

The production process aims for zero material waste. Due to its use of secondary raw materials and CO₂ absorption, the material is positioned as a lower-impact alternative to conventional fired bricks. Pricing is comparable to standard masonry products, making it applicable in both conventional and sustainable construction projects.

NXT Bricks are part of a range of products developed by NXT Building with a focus on circular construction materials, including concrete and partition systems. The product line supports the reuse of raw materials in the built environment, with the goal of reducing environmental pressure in the construction sector.