INCA Case Study: Bedford Road, Bedford

Background to the Project:

This retrofit project came about as part of the client’s goal to upgrade the thermal efficiency of their property while maintaining a traditional brick-built aesthetic. The brief focused on transforming an aging and poorly insulated façade into a high-performance envelope that would reduce energy bills, improve comfort, and enhance curb appeal. The client was particularly interested in preserving the architectural charm of the building without compromising on energy efficiency or fire safety.

Design & Technical Challenges:

A key challenge in this project was replicating a traditional aesthetic while using a modern EWI system. This required not only technical precision in product choice and installation but also exceptional attention to visual detail. Aligning the Cordoba brick slips with architectural features such as windows, sills, lintels, and eaves was particularly demanding, requiring bespoke cuts and careful reveal detailing. Furthermore, managing wall depth and finish alignment around original rooflines and decorative facias was critical to ensure a seamless and authentic finish.

EWI Installation & On-Site Challenges:

The property was upgraded using a mineral wool EWI system from EWI Pro, installed by Nulook Insulation Ltd. The system featured 100mm Rockwool Dual Density Slabs alongside EWI Pro’s Premium Basecoat 225, 165 /m2 orange mesh and Cordoba-coloured brick slips. The installation demanded meticulous attention to fixing methods, mechanical anchors, and waterproofing detailing — particularly around penetrations and reveals. Despite the inherent complexity, the system was installed with minimal disruption to the client due to Nulook’s planning and project management expertise. The team adhered closely to manufacturer specifications, ensuring compliance with ventilation requirements and robust weatherproofing.

Thermal Performance Enhancement:

The use of 100mm mineral wool significantly improved the property’s thermal performance. A post-installation wall U-value of 0.30 W/m²·K was achieved — a substantial improvement over the pre-retrofit condition of 1.5 W/m²·K. The mineral wool insulation, being non-combustible and vapour-permeable, also delivers enhanced fire safety and long-term durability.

Stand-Out Features & Aesthetic Considerations:

What elevates this project beyond technical excellence is its visual impact. The Cordoba brick slips, selected for their rich texture and warm, traditional tones, replicate the appearance of real brickwork to an exceptional standard. Even coursing, perfectly aligned returns, and carefully detailed mortar joints showcase the level of craftsmanship involved. The installers took special care around architectural features, ensuring precision on reveals, sills, and lintels — all of which contribute to a finish that is indistinguishable from new brick construction. This retrofit succeeds not only in improving performance but also in honouring the original character of a traditional cottage home.

Conclusion:

This retrofit project stands as a benchmark in combining aesthetic sensitivity with energy efficiency and fire safety. The attention to detail from Nulook Insulation Ltd, paired with high-performance materials from EWI Pro, results in a façade that performs as well as it looks. It’s a clear demonstration of the value of expert-led retrofit and an excellent case study for the wider EWI industry.

This project stands out as one of the finest examples of a brick slip installation that EWI Pro has encountered to date. The level of craftsmanship demonstrated throughout showcases an exceptional understanding of both the system and the aesthetic demands of a traditional brick façade. The Cordoba brick slips have been applied with such precision that the finish is virtually indistinguishable from genuine brickwork, reflecting a deep commitment to quality and attention to detail. It’s a benchmark project that sets the standard for what can be achieved when high-performance materials are combined with expert installation and a clear design vision.