How much does insulation cost?
Discover what insulation costs in the Netherlands. Compare prices for roof, cavity wall and floor insulation and request free quotes from certified insulation companies.
Average cost for a insulation specialist (average)
What will insulation cost in 2026?
The costs of insulation vary greatly per type and per home. For an average terraced house you pay between 3,000 and 8,000 euros to insulate the roof, cavity walls and floor. A detached house easily costs 8,000 to 15,000 euros due to the larger surface area. You usually earn back the investment within 5 to 10 years through lower energy costs.
What types of insulation are there?
The three most important types of home insulation are roof insulation, cavity wall insulation and floor insulation. You can also save with HR++ or triple glazing and gap seals. Each measure addresses a different part of the heat loss. Roof insulation prevents up to 30% heat loss, cavity wall insulation up to 25% and floor insulation up to 10%.
Subsidies and payback period
The Dutch government encourages home insulation through the ISDE subsidy. In 2026 you can apply for a subsidy for roof insulation, floor insulation, cavity wall insulation and high-efficiency glass. The subsidy amount is higher if you implement multiple measures simultaneously. The average payback period for insulation is between 5 and 10 years, depending on your current energy consumption.
Insulation materials compared
The most commonly used insulation materials are mineral wool (glass wool and rock wool), PIR/PUR plates, EPS beads and cellulose. Mineral wool is affordable and fireproof. PIR plates provide the best insulation per cm of thickness. EPS beads are ideal for cavity wall insulation. PUR foam is often sprayed in crawl spaces. Your insulation company will advise you on which material best suits your situation.
Tips for choosing an insulation company
Always request at least three quotes and compare not only on price but also on material, Rd value and warranty conditions. Check whether the company is certified via KIWA or SKG-IKOB. Read reviews from previous customers and ask for reference projects in your area. A good insulation company will carry out an inspection in advance and provide honest advice about which measures will yield the most benefit.
Price overview
| Service | From | To | Unit |
|---|---|---|---|
| Roof insulation (inside) | €30 | €75 | per m2 |
| Cavity wall insulation | €15 | €35 | per m2 |
| Floor insulation (crawl space) | €20 | €45 | per m2 |
| Crawl space insulation complete | €1200 | €3500 | total |
| Install HR++ glass | €150 | €350 | per m2 |
| Gap sealing house | €300 | €800 | total |
What determines the price?
Type of insulation
Roof insulation is usually the most expensive but provides the greatest energy savings. Cavity wall insulation is relatively cheap and quickly carried out.
Surface
The larger the surface to be insulated, the higher the total costs. In larger projects, the price per m2 often decreases.
Insulating material
PIR plates are more expensive than mineral wool but insulate better per cm of thickness. PUR foam is ideal for hard-to-reach places.
Condition of the house
Older homes sometimes require additional preparatory work such as removing old insulation or repairing the substructure.
Saving tips
- Start with roof insulation. Heat rises, so you lose up to 30% of your heat through the roof.
- Always ask about available subsidies through the ISDE. In 2026 you can get back up to 30% of the costs.
- Have an energy advice carried out before you start. This way you know which insulation measure will yield the most benefit.
- Combine multiple insulation measures in one project. This saves on labor costs and provides more subsidies.
- Choose an insulation company with KIWA or SKG-IKOB certification for guaranteed quality.
Frequently asked questions
How much does it cost to insulate an entire home?
Complete home insulation costs an average of 8,000 to 15,000 euros, depending on the home type and its current condition. A terraced house is cheaper than a detached house because there is less outside space.
Which insulation provides the most savings?
Roof insulation provides the greatest savings, followed by cavity wall insulation and floor insulation. With roof insulation you save an average of 400 to 800 euros per year on heating costs.
Can I get a subsidy for insulation?
Yes, you can get part of the costs back through the ISDE subsidy. The exact amounts vary per year and per measure. If you combine several measures, the subsidy amount will be higher.
How long does it take to insulate a home?
Cavity wall insulation usually takes half a day. Roof insulation takes 2 to 5 days depending on the method. Floor insulation through the crawl space is ready in 1 day.
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