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Cavity wall insulation

Many houses built between roughly 1920 and 1975 have an empty cavity between the inner and outer wall. A lot of heat escapes there. Filling that space keeps the heat inside.

How it works

What is cavity wall insulation?

For cavity wall insulation we drill small holes in the mortar joints of the outer wall. Through these holes we fill the cavity with insulation material. Then we close the holes in a colour that matches your brickwork.

You notice the difference straight away: the walls feel less cold, the heating does not have to work as hard and the house stays warm for longer. In summer it stays a little cooler inside.

Material

We fill the cavity with blown insulation: insulation flakes that fill the cavity completely.

More about our materials →
Holland Isolatie installer blowing insulation into the cavity wall of a brick terraced house

Suitable for

  • Homes with a cavity that is still empty
  • Walls that are dry and in good condition
  • Also possible for end-of-terrace and detached houses
  • Not sure if you have a cavity? We check during the survey
Request a free survey
Benefits

Why cavity wall insulation?

Often done in 1 day

In a typical home we are usually finished within a day.

Little disruption

We mainly work outside. You will hardly notice it indoors.

Quick payback

Cavity wall insulation is one of the cheapest ways to save energy.

Our approach

How it works in practice

Request

Fill in the form, call us or send a WhatsApp message.

Free survey

We look at your home and give honest advice.

Fixed price

You receive the quote in writing. No surprises afterwards.

Installation

We carry out the work on a day that suits you and tidy up afterwards.

Questions

Frequently asked questions about cavity wall insulation

How do I know if my house has a cavity wall?

During the survey we measure the thickness of the wall and look into the cavity with a small camera. Then we know for sure whether there is a cavity and whether it is already filled.

Will the holes stay visible?

No. We fill the holes with mortar in a colour that matches your joints as closely as possible.

A subsidy is often available. Read more about subsidies.

Free quote

Quote for cavity wall insulation

Fill in the form. We will contact you within 1 working day to arrange a free survey.

Prefer to call?
Who is the quote for?
What would you like a quote for?
Area per type of insulation (m²)

Tick above what you would like insulated. You can then enter the area for each type of insulation.

Please enter your name and phone number and choose at least one type of insulation.

We only use your details to contact you about this request.

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