Inner Visual

Energy Efficient Works - Technical Specifications and Considerations

All works must be undertaken by an SEAI registered Contractor in accordance with the technical requirements set out in the Contractor Code of Practice and Technical Specification. The table below sets out the summary performance requirements. An optimum solution for the entire home has to be implemented.

Waterford Insulation SEAI Registered Contractor Number - 10284

MeasureSummary Requirement
InsulationAttic InsulationCeiling Level: Target U-Value ≤ 0.16 W/m2K
Rafter Level: Target U-Value ≤ 0.16 W/m2K
Wall Insulation - CavityNSAI Agrément certified system
Target U-Value ≤ 0.21 W/m2K
Wall Insulation - ExternalNSAI Agrément certified system
Target U-Value ≤ 0.21 W/m2K
Wall Insulation - Internal Dry LiningTarget U-Value ≤ 0.21 W/m2K
Heating SystemHigh Efficiency Oil / Gas Boiler with Controls upgrade. Upgrade comprising
  • Boiler seasonal efficiency ≥90% (as indicated on the SEAI HARP database)
  • Two zones (space and water) with 7 day programmer (time / temperature)
  • Time / temperature control of electric immersion
  • 1 additional zone OR installation of sufficient TRVs
Heating Controls Upgrade only Upgrade Comprising
  • Two zones (space and water) with 7 day programmer (time / temperature)
  • Time / temperature control of electric immersion
  • 1 additional zone OR installation of sufficient TRVs
Solar HeatingProduct (panel) must be on SEAI registered product list and supplying > 10 kWh/ m2Yr
Building Energy Rating (BER)Use registered BER assessor and BER published on National Administration System

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