Skip to content
Home » Moisture Probe Survey

Roof Moisture Survey

NWIR can detect moisture in your building using the latest technology

Enquire Now

Enquire Now

Consent
We ask please for no marketing, web design or search engine optimisation enquiries as we are not interested at the moment in changing provider. Any enquiries of this nature will not be acknowledged.
Roof Moisture Survey

Moisture Probe

Moisture probing is a simple diagnostic used on areas of your roof identified as potentially leaking. Once we’ve marked the areas with survey paint, we’ll plot on a CAD drawing the effective execution for repairs, testing those areas with a moisture probe.

The process is as follows;

  • On cutting out a small core of the roof area, a moisture probe will be inserted to test the moisture within the roof area
  • The same process will be completed to a number of random areas across the roof covering
  • Defective roof areas will be marked on the roof’s surface with survey paint and plotted on a CAD drawing in preparation for repairs.

What are the Main Benefits of a Moisture Probe

The main benefit of using moisture probe roof diagnostics, is that the you could potentially avoid a complete roof replacement, which would be a huge saving for your business. If there’s only certain areas that need repairing, then it’s those areas that’ll be repaired. We’ll never cost or quote you more than is absolutely necessary.

So for your free site survey or if you’d like to know more about moisture probing, call us on: 0800 046 1500

GET YOUR FREE SITE SURVEY

Roof Moisture Probe Survey

When to book a roof moisture scan

Most clients come to us at one of four points, when the cost of guessing what is wrong with the roof starts to outweigh the cost of finding out.

  • A leak keeps coming back after repair. The scan shows how far the water has travelled, so the next repair deals with all of the wet area rather than just the visible one.
  • Your roof is due for refurbishment. Knowing which areas are wet tells you whether parts of the existing roof can stay in place or need to be stripped.
  • You are setting maintenance budgets. Evidence of the roof’s condition lets you plan spending instead of reacting to the next leak.
  • You are buying, selling or leasing a building. A scan gives you the roof’s real condition before you agree on a price or sign a lease.

From scan to targeted repair

Because we are both a roof surveying company and a roofing contractor, the quote that follows your survey is a full project costing, including the access and health and safety requirements of the job. When only part of your roof is wet, the work can be limited to those areas through flat roofing repairs rather than a full replacement.

Materials are installed by manufacturer-approved operatives, and new roofing can carry a single point guarantee of between 10 and 25 years, depending on the project.

Accredited roof surveyors and contractors

We are members of the National Federation of Roofing Contractors (NFRC) and accredited under CHAS and Constructionline. You can see the full list on our awards and accreditations page.

Other roof surveys and diagnostics

A moisture scan tells you where your roof is wet, but it is not always the best tool for finding where water gets in. Electronic leak detection locates leaks in most types of waterproofing membrane, while a commercial roof survey assesses the overall condition of your roof. You can see every method we offer on our roof surveys and diagnostics page.

Book a free roof survey

If you suspect water is trapped in your roof, finding out how far it has spread is the first step towards fixing only what needs fixing. Book your free site survey, and we will recommend the right scan for your building.

Call us on 0800 046 1500, Monday to Friday, 9am to 5pm.

Roof moisture scan FAQs

IF YOU REQUIRE A FREE SITE SURVEY LET US KNOW.

WE COVER ALL OF THE UK’S MAJOR CITIES.

© 2025 NWIR. All rights reserved.