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Free cavity wall surveys across mainland England, Scotland and Wales

Survey FAQs

Answers about the free cavity wall survey: what happens, how long it takes, what the quote contains and whether there is any obligation.

A pair of rendered semi-detached houses with grey roofs on a corner plot

Book a free survey

Four details and we do the rest. No charge, no obligation.

We reply within one working day to arrange a free survey and quote.

  • Checkatrade 9.74/10 from 141 reviews
  • TrustATrader 4.9/5 from 25 reviews

Scores for Remove Sprayfoam Limited, the company behind Cavity Reset.

What people want to know before they book. For the detail, see the pages on the borescope survey, moisture readings, the quote and CIGA claims.

Is the survey really free?

Yes. No call-out charge, no fee for the quote, no obligation to have any work done. We do it because it is the only way to price the job properly, and because a fair share of surveys end with advice rather than a quote.

How long does it take?

Usually one to two hours for a typical house: an outside walk round, readings inside, borescope holes on the elevations that need them. Larger houses or several affected rooms take longer.

Do you drill into my walls?

Into the mortar joints, not the bricks, with a 10mm bit, at a handful of points per elevation. The holes are filled with matching mortar before we leave. On rendered walls we discuss where the holes go before drilling.

Do I need to be in?

For the inside readings, yes, or someone who can let us in. If you would rather we start outside before you get home, that works.

What do I need to have ready?

Any paperwork about the insulation: a guarantee certificate, an installer’s invoice, an energy performance certificate, anything from when the house was bought. It is not essential, but it names the installer and the material and can matter for a guarantee claim.

When do I get the quote?

We reply within one working day to arrange a free survey and quote.

What if you find the insulation is fine?

Then we say so, tells you what we think the cause is, and says who should look at it. You are not charged and you are not sold anything.

Can I use the quote to get other quotes?

Yes. It is yours. Other firms pricing from the same findings is how you get comparable quotes.

Can the quote be used for a CIGA claim or a legal claim?

It records what an independent inspection found, with photographs, readings and dates, and it is written with that use in mind. We do not act for you in a claim, and for a court matter you may need a chartered surveyor’s report as well; we will say so if we think that.

Where do you survey?

Cavity wall insulation removal across mainland England, Scotland and Wales. If you are unsure whether we cover your address, ask and we will say.

What if I only want an inspection and no work?

That is fine, and common before a house sale or a guarantee claim. Book the survey, get the quote, and do what you like with it.

Free survey

Book your free survey

We reply within one working day to arrange a free survey and quote.

  • Checkatrade 9.74/10 from 141 reviews
  • TrustATrader 4.9/5 from 25 reviews

Scores for Remove Sprayfoam Limited, the company behind Cavity Reset.

Or email [email protected]. Your details are used to answer you and for nothing else: see the privacy policy.

What happens next

  • A free survey first We check the wall inside and out and look into the cavity with a small camera. Then you get a fixed price in writing.
  • The insulation comes out Bricks come out at the base of the wall, the old fill is drawn out, and the bricks go back in, pointed to match.
  • A completion certificate You receive a completion certificate when the work is done. If a lender or surveyor has flagged a filled cavity, that certificate is what you show them.