Cavity wall insulation?

Save 15–25% on your energy bill. Certified installation, ISDE subsidy available. Peak season: September to January.

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What is cavity wall insulation?

Cavity wall insulation involves filling the hollow space (cavity) between the inner and outer wall of your home with insulation material. Small drill holes are made in the outer brickwork and insulation material is blown into the cavity. After installation the holes are barely visible.

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15–25% energy savings

Immediately noticeable lower heating costs.

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Better comfort

Warmer in winter, cooler in summer.

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Higher home value

Better energy label improves resale value.

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Subsidy available

ISDE subsidy available for certified installation.

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Quickly installed

Average half a working day for a terraced house.

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Better sound insulation

Less street noise through the insulation layer.

Related Services

Floor insulation Roof insulation

Frequently asked questions

What does cavity wall insulation cost per m²?

Costs average between €15 and €30 per m², including labour and materials. Request a free quote for an exact price for your home.

How long does installation take?

An average terraced house is insulated in half a day. A large detached house may take a full working day.

How much can I save with cavity wall insulation?

On average you save 15–25% on your heating costs. With an energy bill of €2,000 per year that is a saving of €300–500.

Is there a subsidy for cavity wall insulation?

Yes, through the ISDE subsidy you can receive a contribution for cavity wall insulation. We will inform you about the current options at your quote.

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