Dutch attic insulation (dakisolatie) costs €25–€80 per m² installed. PIR/PUR boards are the most popular choice at €30–€60/m², while blown-in mineral wool costs €25–€45/m². The Netherlands targets an energy label of A or higher for all homes by 2030, making insulation a priority. The national ISDE subsidy provides €5–€14 per m² for roof insulation. Most Dutch rowhouses (rijtjeshuizen) have relatively small roof areas (30–60 m²), keeping total costs in the €1,000–€4,000 range. The HR++ (high-performance) building standard requires an Rc-value of 6.3 m²·K/W for roofs in new construction.
Average attic insulation costs by type
| Project type | Typical cost (EUR) |
|---|---|
| PIR / PUR rigid boards (popular) | €30–€60/m² |
| Blown-in mineral wool (inblazen) | €25–€45/m² |
| Full installed range (dakisolatie) | €25–€80/m² |
| ISDE subsidy per m² of roof | €5–€14/m² |
| Typical row-house (30–60 m² roof) total | €1,000–€4,000 |
| Rc-value 6.3 m²·K/W (new build requirement) | HR++ standard |
| BTW — included in quoted prices | 21% |
Attic insulation costs in the Netherlands
Dutch attic insulation (dakisolatie) costs €25–€80 per m² installed. PIR/PUR boards are the most popular choice at €30–€60/m², while blown-in mineral wool costs €25–€45/m². The Netherlands targets an energy label of A or higher for all homes by 2030, making insulation a priority. The national ISDE subsidy provides €5–€14 per m² for roof insulation.
Most Dutch rowhouses (rijtjeshuizen) have relatively small roof areas (30–60 m²), keeping total costs in the €1,000–€4,000 range. The HR++ (high-performance) building standard requires an Rc-value of 6.3 m²·K/W for roofs in new construction.
What affects the cost?
- Insulation type — blown-in is cheapest; spray foam costs 3–5x more but provides air sealing
- R-value target — the DOE recommends R-38 to R-60 for attics depending on climate zone
- Attic accessibility — tight spaces, low clearance, and obstacles increase labor time
- Attic size — typical US attic is 1,000–1,500 sq ft
How to save on attic insulation
- Claim available rebates — utility rebates, federal tax credits, and state programs can cover 30–50% of costs
- Start with air sealing — sealing gaps before adding insulation maximizes energy savings
- Choose blown-in for open attics — it's the most cost-effective option for standard attics
- Top up existing insulation — adding blown-in over old batts is cheaper than full removal and replacement
- DIY blown-in — renting a blower and buying material can cut costs by 50% for accessible attics