Internal Wall Insulation Grant (Drylining) — Up to €4,500 from SEAI
Internal wall insulation (drylining) is an alternative to external wrap — especially useful for terraced homes, conservation areas, or where external changes aren't practical. SEAI offers grants up to €4,500 depending on property type.
Check If My Home QualifiesGrant Amounts by Property Type
€4,500
Detached
€3,500
Semi-detached / End of terrace
€2,000
Mid-terrace
€1,500
Apartment
Internal vs External Wall Insulation
Internal (Drylining) — Better when:
- Terraced or mid-terrace home (less external wall exposed)
- Home is in a conservation area or protected structure
- External appearance must not change
- Budget is tighter — typically lower installation cost
External (EWI) — Better when:
- Detached or semi-detached with large exposed wall area
- Preserving internal floor area matters
- Home needs external render refresh anyway
- Maximising energy performance improvement
Eligibility and What to Know
Home built before 2011
Must have been built and occupied before 31 December 2010.
SEAI-registered contractor required
Only contractors registered with SEAI for internal wall insulation are eligible. Check seai.ie/contractor-register.
Apply before work starts
Written approval from SEAI must be received before the contractor begins any work.
Room size will be reduced slightly
Drylining adds 50–100mm of thickness to each treated wall. In smaller rooms this is noticeable — consider this when planning.
Apartments: OMC approval likely needed
Owner management company approval is typically required before works in apartments.
Do not start work before receiving written approval from SEAI.
Apply at SEAI.ie
All applications through the official SEAI portal.
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