5 Bed Dormer in Kerry

260m2
Pre energy upgrade works BER = C1
Post energy upgrade works BER = A3


Energy upgrade measures completed:


Floor insulation: The existing ground floor had a number of rooms with suspended timber floors. The existing floors boards were removed and spray foam insulation was installed between the joists. A ply floor was fitted and an air tightness membrane was installed. New timber flooring was then laid and new skirtings were installed and painted.


Attic insulation: All existing first floor rooms had sloped ceilings with no insulation. The plasterboard on the sloped ceilings were stripped to allow for 125mm of spray foam insulation. An insulated plasterboard was then installed to all sloped ceilings, skimmed and painted. Rigid insulation and loft board was installed to all crawl spaces to allow for storage whilst insulating the areas to current building regulations. The knee wall already had mineral wool insulation and an insulated plasterboard so there was no requirement to further insulate these walls. The top attic had mineral wool insulation added to give a total depth of 300mm. All pipes and tanks were also insulated. Roof ventilation was installed to comply with current building regulations.


Cavity wall insulation: The walls of the house had a 100mm cavity with 50mm of existing rigid board insulation. All walls were fully pumped with cavity bead insulation.


Air to water heat pump: The existing oil boiler was decommissioned and removed. The house had a combination of radiators and solar panels. An 8.5kW air to water heat pump was installed in it's place. 85% of the existing radiators were retained as they were in good condition and the complied with the heat loss indicator requirements. 15% of the radiators were replaced with suitably sized radiators. The utility room did not have a radiator so one was added including new flow and return pipework. The indoor heat pump contained an integrated pre-plumbed 200L cylinder which was suitable to work in conjunction with the client's existing solar panels which can boost the supply of hot water. The existing heating system was power flushed and a magnetic filter was installed.


LED bulbs: Internal light bulbs were upgraded to LED.


Windows and doors: The client already had a composite front door which was retained. All other doors and existing windows were replaced with triple glazed UPVC windows.