Insulation Cost Guide for Dublin Homes (2026)
Professional attic insulation by Dublin's leading experts. Save up to 30% on energy bills and access generous SEAI grants today.
Why Choose Attic Insulation?
Insulation costs in Dublin vary by measure, home size, and how much of the job the SEAI grant covers. Below are typical price ranges by home size for attic insulation — the upgrade Dublin homeowners ask about most — plus what to expect for cavity wall, external wall and spray foam insulation.
These figures are a starting guide, not a quote. Your exact price depends on your home's size, construction, and current insulation levels, which we assess for free before you commit to anything.
- check_circleTransparent Pricing
- check_circleGrants Deducted Upfront
- check_circleNo Hidden Costs
- check_circleFree No-Obligation Survey
What Determines Insulation Cost in Dublin?
The final price for any insulation upgrade depends on your home's size, its current insulation levels, the material used, and how much of the job the SEAI grant covers. The table below reflects typical real-project scenarios for attic insulation by home size; your exact price is confirmed during a free, no-obligation survey.
Cavity Wall, External Wall & Spray Foam Costs
Cavity wall insulation is grant-eligible up to €700 and is one of the more affordable upgrades since installation takes just a few hours. External wall insulation is a larger project — wrapping your entire home in insulated render — and carries the largest SEAI grant of any measure, up to €6,000. Spray foam insulation costs more per square metre than mineral wool but delivers the highest R-value and a genuine airtight seal. Because these three measures vary far more by property than attic insulation does, we quote them individually after a free survey rather than publishing a single "typical" price.
How SEAI Grants Reduce Your Net Cost
Every insulation measure above is eligible for an SEAI Better Energy Homes grant, deducted directly from your invoice before you pay — see our full SEAI grant amounts and eligibility guide for the complete breakdown by measure.
Get an Exact Price for Your Home
Illustrative figures are a starting point, not a quote. Book a free survey and we'll give you an exact price, confirm your SEAI grant amount, and handle all the paperwork.
Our 4-Step Installation Process
Professional, transparent, and hassle-free from start to finish.
Free Home Survey
We assess your current insulation levels and identify heat loss areas.
Tailored Quote
Receive a detailed breakdown of costs, material options, and potential SEAI grant deductions.
Expert Installation
Our SEAI-registered team installs your insulation quickly, with minimal disruption.
Post-Install Check
A final quality audit ensures optimal coverage and efficiency.
Attic Insulation Cost in Dublin
| Average Home Size | Typical Cost | SEAI Grant Amount | Net Cost |
|---|---|---|---|
| Small Terraced House | €1,100 | €800 | €300 |
| Semi-Detached | €1,800 | €1,200 | €600 |
| Large Detached | €2,400 | €1,500 | €900 |
*Costs are illustrative estimates. Actual pricing subject to survey.
Check Your EligibilityAttic Insulation FAQs
How much does attic insulation cost in Dublin?expand_more
For a typical semi-detached home, attic insulation costs around €1,800 before grants, or about €600 net after an SEAI grant of up to €1,200-€1,500. Smaller terraced homes and larger detached homes fall either side of this — we confirm your exact price during a free survey.
How much does cavity wall insulation cost?expand_more
Cavity wall insulation is one of the more affordable upgrades and is eligible for an SEAI grant of up to €700. Because cost depends on wall area, we provide an exact price after a short, free survey.
How much does external wall insulation cost?expand_more
External wall insulation is a larger project than attic or cavity wall insulation, but also carries the largest SEAI grant available — up to €6,000. Exact pricing depends on your home's size and wall area, confirmed at survey.
Does the SEAI grant get deducted from the price automatically?expand_more
Yes. As SEAI Registered Contractors, we deduct your grant directly from the invoice, so the price you pay is always the net cost — you never have to claim anything back yourself.
Is the survey really free?expand_more
Yes, with no obligation. We assess your current insulation levels and give you an exact, itemised price before any work begins.
Ready to Get Started?
Book Your Free SurveyOur Other Services
Attic Insulation
Our most requested and most affordable insulation upgrade.
Home Insulation & Grants
Full SEAI grant amounts and eligibility, measure by measure.
Cavity Wall Insulation
Fill the gaps in your home's masonry walls in just a few hours.