Merthyr Valleys Case Study

Project Overview:  

In April 2023, we were awarded a contract by Merthyr Valleys Homes for the provision of Retrofit Assessment and Coordination services for a scheme of 170 homes.

The contract included primarily semi-detached houses in a relatively exposed hilltop location, the key objectives were to take a ‘fabric first’ approach to reduce space heating demand prior to electrification of heating systems in future rounds of works. 

 Our Responsibilities Included:

·        Retrofit Plans.

·        Retrofit Design.

·        Assessments.

·        Coordination.

·        PAS 2035 Compliancy.

·        Part f Building Regulations Compliancy..

·        Ensure all Contractors were PAS 2030 accredited.

·        Document Control and evidence Boroscope survey reports.

·        Ensure Gas Safe and NIC/EIC certification .

·        Pre , mid install and post install photographic evidence provided..

·        Site visits by Retrofit Coordinator.

·        House by House ‘Sign Off’.

Retrofit Measures Implemented

Along with planned External Wall Insulation, additional ventilation measures were added to ensure compliance with both Part F of the Building regulations and PAS 2035. These included the upgrade of intermittent extract fans . The Nuaire Cyfan models provided constant background ventilation together with a boost function. A schedule of door undercuts were provided to ensure incoming airflow into all habitable rooms via window trickle vents which improved extraction in wet rooms.

At each level, detailed designs were provided to ensure loft insulation met the external wall insulation to avoid ‘cold bridging’ but also ensuring adequate airflows to ventilate the roof structure.