Hertfordshire · London and the South East
Thermal imaging roof survey in Harpenden, Hertfordshire
Thermal imaging to find moisture and heat loss patterns in a roof in Harpenden, carried out by an experienced roof surveyor. You get a clear written report with photographs.
- Leaks that are hard to trace
- Damp that repairs haven’t cured
- Heat escaping through the roof
Honest limits
To be straight with you, a roof survey has limits:
- Whether the deck or roof structure is strong enough
- Clear results when the conditions on the day are poor
- The condition of timbers we can’t see
If you are not sure which survey you need, phone 07833 053749 or use the contact form and we’ll give you a straight answer. What our survey covers.
Roofs we survey in Harpenden
- Commercial roofs
- Flat roofs
- Insulated roof spaces
- Ceilings below the roof
- Pitched roof slopes
- Loft conversions
Thermal roof survey in Harpenden
Thermal imaging is frequently most useful on flat roofs, from small extensions to large commercial roofs. It can show patterns that point to trapped moisture under the membrane. Pitched roofs with slates or tiles are frequently harder to read, because of the air space beneath, so we also look from the loft where we can reach it safely. We’re often asked to look into moisture around outlets and upstands and gaps in loft insulation, across flat roofs, insulated roof spaces and commercial roofs.
Around a town like Harpenden, steep roofs, tall gables and rear slopes are often hidden from ground level. A drone can take close-up photos of them, and thermal imaging can show patterns of heat loss or trapped moisture. Both depend on the weather on the day. Rear slopes over back additions are a common example, as they’re rarely visible from the street.
Most points in the report come with a picture, so you can see each defect rather than just read about it. If something couldn’t be seen safely, the report is clear about it.
- Location
- Harpenden (AL5)
- Region
- Hertfordshire
- Cost
- From £400 inc. VAT
- Your report
- Emailed report with photos and recommendations
- Survey days
- Weekdays and weekends
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Updated
- 27 October 2026
Towns and villages near Harpenden
Other services in Harpenden
Landlords, agents and block managers in Harpenden
Shared roofs need a little more planning: we need access agreed with the building owner or managing agent. Mention it when you contact us and we’ll plan the visit with that in mind.
An agent can book and manage the survey for a landlord. We agree a time with the tenant beforehand.
The survey, step by step
Every visit follows the same pattern: we listen to what’s been worrying you, inspect the roof from every safe vantage point, photograph what we find and record our findings for the written report. It usually takes about one to two hours at a typical home, with bigger or more complicated roofs taking longer. For a visit in Harpenden, we need access to the loft, any rooms with leaks or stains, and the outside of the building. If there’s a side gate or a rear garden, let us know how to reach it. Weekday and weekend visits are available.
- First we discuss the roof, any damp and the forecast for the visit.
- We look over the roof from wherever it is safe.
- Thermal images are taken across the roof and, where there is safe access, in the loft.
- Patterns that stand out are checked with moisture readings.
- The report pairs each thermal image with a photo and explains what it suggests.
Before the survey
- Let us know about any leaks, stains or damp patches you know of
- Keep pets inside or away from the areas we’re looking at
- For a flat or shared roof, check access with whoever owns or manages the building
Getting a price
We survey roofs on weekdays and at weekends. To find a date that works for you, ring 07833 053749 or drop us an email.
Related advice
What affects the price in Harpenden
Survey packages start from £150, including VAT. What you pay for your roof depends on:
- If the survey needs thermal imaging or a drone
- Commercial roofs and larger buildings
- Basic, Standard or Premium
- The shape of the roof and its details
To find out what your survey will cost, ring 07833 053749 or drop us an email and tell us about the roof. We’ll confirm the figure before booking.
What to tell us when you get in touch
What helps most when you contact us:
- Where water is showing inside, if it is
- Whether there’s a loft hatch, a shared roof or tricky access
- Your timetable, such as an exchange date
- Where the property is, with the postcode
A quick phone call is usually the easiest start: ring 07833 053749 or send us an email. You will have a price before anything is arranged.
Tips that help
Getting the most from a thermal roof survey starts before we arrive and carries on afterwards. Some tips:
- Remember the conditions on the day affect the results
- Move stored items away from the loft hatch
- Don’t switch the heating off ahead of the visit
- Keep the report to compare against after any repair
You also get an in-person consultation with a Premium Survey, giving you the chance to talk through the images and findings. A follow-up 12 months later is included as well.
Keep outlets and gutters clear so water drains off the roof quickly. Less standing water means less chance of it getting under the covering.
Airspace, weather and Harpenden roofs
Harpenden is about 2 miles from the edge of the flight restriction zone around Luton Airport. If the drone is used for your survey, the exact boundary is checked for the address first. With Childwickbury Manor about 2.6 miles south, Harpenden sits in an area with a long building history. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead.
Take a building like Harpenden Academy: thermal images can show where wet insulation sits under a big flat roof.
Harpenden is about 6 miles north-east of Hemel Hempstead, in Hertfordshire. We carry out thermal roof surveys for homes and businesses in Harpenden. Harpenden is one of the places in Hertfordshire we cover. We also survey roofs in Milton Keynes.
We survey roofs across AL5 for thermal roof surveys and the streets around it. We cover properties on Station Road, High Street and Connaught Road and the roads around them. Harpenden is on the B652 and B653, so it is easy for us to get to. Other places close to Harpenden include Batford (1 mile north-east), Lea Valley (1 mile east), Bower Heath (1 mile north), Mackerye End (1 mile north-east) and The Folly (2 miles east). Larger places within reach include Watford (11 miles south), Hemel Hempstead (6 miles south-west), Stevenage (10 miles north-east), St Albans (5 miles south), Welwyn Garden City (7 miles east) and Hitchin (10 miles north). Being one of Hertfordshire’s larger places, Harpenden has homes, rented property and businesses of every kind.
Near you in Harpenden
Locally, jobs take us to homes and businesses close to Lydekker Park, The Junction pub and Sir John Lawes School and the streets around them. Harpenden has its own railway station: Harpenden station. A little further out are Harpenden Museum (within half a mile south-west) and Luton Castle (5 miles north-west). Green spaces nearby include Wheathampstead Local Nature Reserve and Verulamium Lake.
Common roof problems in Harpenden
Once a leak has been fixed, people frequently ask whether the roof is still wet. A thermal survey with moisture readings can show whether wet areas remain, given suitable conditions on the day.
Most people get in touch when they’ve noticed one of these:
- Wet areas near outlets and upstands
- Thin or uneven insulation in the roof
- Water that travels before it shows
- Damp that repairs haven’t cured
For an older house near a landmark such as St Nicholas Church, older roofs can be steep and hard to see from the street, which is where photos from the air and thermal images help.
Questions to ask before you book
- What they won’t be able to tell you
- Their drone registration, if they fly one
- What follow-up you get after the report
- How they plan to inspect the roof safely
Harpenden: your questions answered
Do you cover Harpenden?
Yes. We survey roofs across London and South East England, and Harpenden is part of that. You can phone 07833 053749 or use the contact form with the address and some details.
Is drone flying allowed in Harpenden?
It depends on the exact address and the weather on the day. Harpenden is about 2 miles from the edge of the flight restriction zone around Luton Airport. The exact boundary is checked for each address before any flight, and a roof inside it needs permission before we fly. A small drone cannot fly safely in high wind or heavy rain, though the rest of the survey goes ahead either way.
Will I get photos?
Yes, plenty. Pictures sit next to the findings they show.
What insurance do you have?
Every survey is covered by professional indemnity and public liability insurance.
Is it a structural engineer’s report?
No. Our survey is not a structural engineer’s report. We’ll recommend an engineer if we see signs that call for one.
What happens after the survey?
You will receive the report by email, and you decide the next step: use it with a seller, an insurer, a roofer or a managing agent.
What’s the best way to book?
The quickest way is to phone 07833 053749 or drop us an email. Give us the address and some details about the roof. We survey on any day of the week.