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Deep home retrofitting upgrades your property's BER rating to a highly efficient A-rating, drastically lowering utility bills and elevating everyday comfort. Through our network of verified energy efficiency insulation contractors and SEAI Registered One-Stop-Shops, homeowners can secure significant state grants to offset the cost of external insulation, heat pumps, solar installations, and ventilation.
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Find vetted One Stop Shops, insulation specialists, and SEAI grant guides across South Dublin:
Unlike simple individual upgrades, a deep home retrofit looks at the property as a complete system. It integrates wall and attic insulation, air-tightness upgrades, mechanical ventilation, and renewable heating systems. The primary target is to bridge thermal leaks, minimize drafts, and transition your property to a secure A-rating BER.
The Sustainable Energy Authority of Ireland (SEAI) offers generous grants supporting energy efficient upgrades. Homeowners can receive up to €8,000 for external wall insulation (EWI), €6,500 for heat pump installations, and additional cash incentives for solar panels and heating controls. Our listed contractors are fully registered, allowing you to access these grants seamlessly.
External wall insulation is the most effective way to insulate solid block or concrete walls in Ireland. Wrapping your home's exterior prevents moisture build-up, blocks thermal bridges, and creates a neat, freshly rendered facade without losing a single square inch of internal living space.
Vetted local contractors, One-Stop-Shops, and insulation specialists ready to upgrade your property.
Your walls are leaking heat. We wrap them.
Unit 20, Westlink Industrial Estate, Kylemore Road, Inchicore, Dublin 10, D10 TD35
Isotherm is a direct Dublin EWI and ICF contractor based in Unit 20 Inchicore. Installing NSAI-certified Baumit external wall insulation and structural ICF builds across Dublin, Kildare, and Leinster.
Tell us about your home energy needs, and get connected with verified local builders.
A home retrofit involves upgrading your property's energy efficiency. This typically includes attic insulation, external wall insulation (EWI), window and door replacements, ventilation upgrades, and installing renewable heating systems like air-to-water heat pumps.
You can apply for individual grants directly through the SEAI (Sustainable Energy Authority of Ireland) website, or choose a One-Stop-Shop contractor who manages the entire application, grant deduction, and retrofit process on your behalf.
External insulation (wrap) is applied to the outside of your walls, maintaining internal room sizes and creating a continuous thermal envelope. Internal insulation (dry lining) is fixed to the inside of external walls, which is often used for historical buildings or brick facades but reduces internal floor space.
A comprehensive deep retrofit can upgrade a home's BER rating from a poor D, E, or F to an A-rating, reducing heating and electricity bills by up to 60-70% while drastically improving comfort.
Discover SEAI One Stop Shops, heat pump eligibility, and insulation grants for your South Dublin suburb: