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Definition of thermal element renovation
3.57NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
The renovation of a thermal element is defined as "the provision of a new layer to a thermal element or the replacement of an existing layer (other than where a partial replacement layer is provided s
dwellingenergythermal-elementThermal element upgrade requirements for major renovations
3.59NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Where an individual thermal element is being renovated through undertaking an activity listed in paragraph 3.57, and the renovation – (a) constitutes a major renovation; or (b) is greater than 50% of
dwellingenergymajor-renovationthermal-element