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Parc Eirin

A development of 225 high quality homes situated in Tonyrefail, South Wales.  


Part L | EPCs | SAPs | Air Pressure Testing | Residential


Viro were appointed by Morganstone Construction to provide SAPs, EPCs, Thermal Bridging calculations and general advice around the suitability of construction methods for an innovative new housing scheme consisting of 225 low energy dwellings. 

The employer requirements detailed strict criteria in relation to the energy performance of the dwellings. This was communicated in the form of ‘Enhanced Backstops’, detailing worst allowable U-Values and thermal bridging psi-values significantly beyond the requirements of Approved Document Part L. 

Viro worked with Morganstone to meet the minimum U-Value requirements in a cost-effective manner. This involved exploring several different insulation methods and construction configurations to the ground floor and external walls. Several design iterations were undertaken to reduce junction heat losses whilst maintaining buildability and cost effectiveness. 

Through detailed calculations and junction design, building performance exceeded the client’s construction criteria. Upon completion, energy performance is expected to greatly exceed the current building standards.  


Tonyrefail, Rhondda Cynon Taf


Morganstone Ltd

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