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Project Value: £10,800,000.00
Term: February 2025 – May 2028

Perth & Kinross Council

Perth & Kinross Council

Perth High Rise

Perth & Kinross Council sought a suitably qualified and experienced partner for assessment, surveying, co-ordination, installation, evaluation and Retrofit project management of six blocks of multi-storey flats located within Perth City Centre.

With Scotland’s ambitious net zero targets, our role was to conduct a thorough feasibility assessing EnerPhit, Association for Environment Conscious Building (AECB) Carbonlite and Energy Efficiency Standard for Social Housing (EESSH2) performance standards. A phased approach was adopted in assessing the blocks and in preparation of the study. The minimum standard to be achieve was to attain EESSH2 with an EPC band B, therefore positioning the blocks on the net zero timeline. This was presented with a full option appraisal consisting of three construction cost analyses for each of the standards to be attained. Due to economic factors, the decision was made to proceed on an EESSH2 basis, which will involve the installation of several energy-efficient measures. This will reduce heat demand, lower carbon emissions, and improve living conditions.

The project will roll out in phases across six blocks, with work beginning in spring 2025 and continuing over three years.

3D Modelling & PHPP
Assessed the standards: EnerPHit Standard (Gold Standard, 25 kWh/m²/a), AECB Retrofit Standard (Less onerous, cost-effective) and EESSH2 Targets (EPC Band B)
Identified optimal energy efficiency measures
Delivered three feasibility appraisals for each standard
Supported a detailed report for the Housing Management Team, including Retrofit feasibility, options, and recommendations
Supported with funding applications and explored third party support
Bespoke Customer Journey
Removal of existing EWI system*
New compliant EWI system
Installation of an insulated warm deck roof
Liquid plastic for walkway floors*
Replacing walkway balustrades with toughened glass*
Installation of ‘Secure by Design’ UPVC windows and Doors
Mechanical ventilation upgrades
Quantum Heaters*
Lightning protection renewal & Communal IRS system installed
CAT 1 lift modernisation*
Compliant internal decoration
3D Modelling & PHPP
Assessed the standards: EnerPHit Standard (Gold Standard, 25 kWh/m²/a), AECB Retrofit Standard (Less onerous, cost-effective) and EESSH2 Targets (EPC Band B)
Identified optimal energy efficiency measures
Delivered three feasibility appraisals for each standard
Supported a detailed report for the Housing Management Team, including Retrofit feasibility, options, and recommendations
Supported with funding applications and explored third party support
Bespoke Customer Journey
Removal of existing EWI system*
New compliant EWI system
Installation of an insulated warm deck roof
Liquid plastic for walkway floors*
Replacing walkway balustrades with toughened glass*
Installation of ‘Secure by Design’ UPVC windows and Doors
Mechanical ventilation upgrades
Quantum Heaters*
Lightning protection renewal & Communal IRS system installed
CAT 1 lift modernisation*
Compliant internal decoration
Budget: £10,800,000.00
Timeframe: February 2025 – May 2028
Carbon Savings: 264,594KgCO2/Yr
EPC Changes: Band C/D to Band B

PERTH & KINROSS COUNCIL

The Anticipated Results

The retrofit improvements have been designed to significantly enhancement energy efficiency, resident comfort, and building longevity. By addressing legacy fabric, structural, and thermal issues, alongside implementing a tailored combination of energy efficiency measures, the buildings will achieve EESSH2 compliance with an EPC B rating. These upgrades will not only reduce carbon emissions and lower energy costs for residents but also create a pathway to achieve Net Zero targets. Additionally, the improvements in ventilation, insulation, and overall building performance will enhance indoor air quality and thermal comfort, ensuring a healthier and more sustainable living environment for the future.

We recently partnered with AC Whyte for the retrofit of the Pomarium blocks in the centre of Perth for Perth & Kinross Council. Their expertise in cladding remediation on high-rise buildings was evident from the outset, but what truly set them apart was their unwavering focus on sustainability and aesthetics.

From the initial feasibility stage, we benefited immensely from their collaborative approach. Together, we explored various options to ensure that every design element not only met our high standards for visual appeal but also aligned with our sustainability goals. This joint effort allowed us to value engineer cost-effective solutions without ever compromising on the client’s requirements and aspirations.

Working with them meant that every decision was made with a holistic perspective, balancing cost, practicality of installation, and long-term environmental benefits. Their commitment to delivering a solution that was both innovative and grounded in real-world practicality has made a significant impact on our project. We look forward to taking the partnership forward over the next 5 blocks as the retrofit programme progresses.

Alistair Cameron

Joint Managing Director

ECD Architects