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PROJECT DETAILS
14 Flats Across Two Residential Blocks
OUR SERVICES
Retrofit Design & Coordination
NO. OF PROPERTIES
14
DATE COMPLETED
March 2026
PROJECT OVERVIEW
Newland Way is a PAS2035 Pathway C retrofit scheme involving two low-rise residential blocks containing 14 flats in total. The project combined deep fabric retrofit measures with significant structural and associated building works, requiring close coordination between retrofit design, structural engineering, statutory approvals and phased construction delivery.
Target Green provided Retrofit Design, Retrofit Coordination and technical support throughout the construction phase, helping ensure the project remained compliant, coordinated and technically robust from concept through to completion.
The scheme adopted a fabric-first retrofit strategy centred around improving the thermal performance and long-term resilience of the buildings. Key measures included:
External wall insulation (EWI)
Roof replacement and loft insulation upgrades
Cavity insulation extraction and replacement
Ventilation improvements
Solar photovoltaic panels
Replacement rainwater goods
Structural remediation works
Replacement elevated access walkways
The buildings contained four different wall types across two storeys, creating a varied façade condition that required bespoke detailing and careful interface coordination throughout the retrofit design process.
Alongside the primary retrofit measures, the project also included a wide range of associated works such as extending eaves and rooflines, service alterations, wall tie replacement, concrete repairs, drainage coordination, fire-rated store door renewals and adaptations to existing fixtures and penetrations to maintain thermal continuity and weather protection.
A detailed, digitally coordinated design process was used to manage the interaction between retrofit measures, structural requirements and statutory compliance obligations.
HOW WE GOT STARTED
The project began with detailed investigations into the existing condition and performance of the residential blocks. Early surveys identified a number of challenges relating to building fabric condition, cavity wall performance, structural interfaces and thermal bridging risks.
Target Green worked closely with the wider design team to develop a coordinated retrofit strategy that balanced energy performance improvements with structural requirements and long-term durability.
A key part of the early design process involved assessing the existing façade conditions and understanding how the different wall types would interact with the proposed external wall insulation system. Detailed cavity inspections and substrate assessments were undertaken to determine where existing cavity insulation had failed and where additional structural remediation would be required before retrofit measures could be installed safely.
The retrofit strategy was developed around a whole-house approach in accordance with PAS2035 principles, ensuring that insulation, ventilation, roof upgrades and associated structural works were designed as a coordinated package rather than isolated measures.
As the project evolved, extensive collaboration took place between retrofit designers, structural engineers, specialist manufacturers and contractors to resolve sequencing challenges and ensure all retrofit measures could be integrated effectively across the occupied buildings.
CHALLENGES & SOLUTIONS
Complex Elevated Walkway Replacement
One of the most technically challenging aspects of the project involved the removal of the existing in-situ concrete elevated walkways and their replacement with a new fabricated AliDeck walkway and stair system.
The original concrete walkways created several issues including:
significant thermal bridging
waterproofing concerns
structural interface complications
sequencing challenges during occupied works
The replacement process required careful coordination to maintain safe resident access while protecting the building envelope throughout the phased construction programme.
Close collaboration between retrofit designers, structural engineers and specialist manufacturers allowed the new lightweight AliDeck system to be integrated successfully alongside the upgraded façade and drainage strategy. The replacement system reduced imposed structural loads while improving long-term durability, accessibility and maintenance performance.
Existing Cavity Wall Condition and Structural Remediation
Detailed investigations identified failed or inadequate cavity insulation alongside localised structural concerns requiring remediation.
Cavity wall inspections and surveys were carried out to assess:
insulation performance
substrate condition
structural suitability for EWI installation
Where required, existing cavity insulation was extracted and replaced. The project also included replacement wall ties, localised concrete repairs and structural strengthening works to ensure the existing buildings could safely support the retrofit strategy.
These interventions reduced future moisture risk while improving overall thermal performance and building durability.
Complex EWI Interfaces and Detailing
The two blocks included four separate wall types and numerous façade interfaces, requiring extensive bespoke detailing throughout the retrofit design process.
Particular attention was given to maintaining:
insulation continuity
airtightness performance
weather protection
thermal bridge reduction
This involved careful coordination around rooflines, extended eaves, rainwater goods, balconies, stair interfaces, window reveals and service penetrations.
Many areas presented restricted access or difficult junction conditions, requiring close collaboration between designers and contractors throughout installation.
Roof Upgrades and Structural Coordination
The original roof coverings were removed and replaced with lightweight metal roof tiles as part of the wider retrofit strategy.
Additional works included:
strengthening existing roof trusses where required
loft insulation upgrades
integration of solar photovoltaic panels
The retrofit design required careful balancing between structural capacity, ventilation requirements, renewable energy generation and long-term maintenance considerations due to the existing roof geometry and loading constraints.
Ventilation and Compliance Strategy
As the retrofit works significantly improved airtightness levels across the buildings, a coordinated ventilation strategy became essential to maintain indoor air quality and moisture management.
The ventilation approach included:
review of trickle ventilation arrangements
infilling of redundant passive vents where appropriate
coordination of cross ventilation strategies
undercut door ventilation measures
high-level ventilation improvements
The ventilation design was developed alongside the fabric upgrades to ensure compliance with PAS2035 requirements and Approved Document F ventilation standards.
FINAL OUTCOME
The completed Newland Way scheme delivers significant improvements in thermal performance, building durability, weather resilience and resident comfort across both residential blocks.
The project successfully combined deep retrofit measures with extensive structural interventions across occupied buildings, demonstrating the importance of coordinated retrofit design when dealing with complex existing structures and multiple construction interfaces.
One of the key achievements of the scheme was the successful integration of the new AliDeck walkway system alongside the external wall insulation strategy. This required careful sequencing and technical detailing to overcome thermal bridging, structural and waterproofing challenges while improving long-term accessibility and maintenance performance.
The buildings now benefit from:
upgraded insulation systems
improved airtightness
enhanced roof performance
renewable energy generation through solar PV
improved drainage systems
modernised ventilation arrangements
All works were delivered within a PAS2035-compliant framework.
Newland Way demonstrates how carefully coordinated retrofit design, structural engineering and construction sequencing can successfully deliver complex, multi-measure retrofit projects involving façade renewal, structural alteration and occupied residential buildings.
PROJECT LOCATION
Newland Way, Wyesham, Monmouth NP25, UK