Hertfordshire · London and the South East
Thermal imaging roof survey in St Margarets, Hertfordshire
We carry out thermal roof surveys in St Margarets and the rest of Hertfordshire. Surveys run on weekdays, Saturdays and Sundays.
- Moisture around outlets and upstands
- Areas of a flat roof that may hold water
- Damp patches with no obvious cause
How a thermal roof survey works in St Margarets
Thermal imaging is useful when a damp patch has no clear cause. Leaks often run along a roof before they appear on a ceiling, and the camera can show patterns that help us follow it. We combine the images with a visual inspection and moisture readings, so the findings don’t rely on the camera alone. Common reasons to book are missing or slipped insulation and damp around roof outlets and upstands, on flat roofs, pitched roof slopes and loft conversions.
Some older homes in villages like St Margarets are listed or in a conservation area. Neither a drone survey nor a thermal survey involves any work on the roof, which suits a building where any change needs care. Check with the council before planning any work on a listed building or one in a conservation area.
If any part of the roof couldn’t be seen safely, we say so in the report. You will know exactly what was inspected and what wasn’t.
- Location
- St Margarets (SG12)
- Region
- Hertfordshire
- Cost
- From £400 inc. VAT
- Your report
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Updated
- 27 October 2026
Why act early in St Margarets
If a big flat roof may need replacing, knowing the wet areas first is useful. Thermal imaging, checked with moisture readings, gives a clearer picture before you commit. Outbuildings and barns around St Margarets are easy to forget, but a failed roof there can spoil what’s stored inside. It’s worth including them in a survey before a winter does the damage.
Thermal roof survey starts from £400, including VAT. Basic starts from £150, Standard from £250 and Premium from £400, VAT included, and we can help you choose.
Why book with us
- An independent look at the roof
- Packages from £150, with VAT included
- PI and public liability insurance
- Drone flown under a CAA Flyer ID and Operator ID
Take a look at what a roof survey costs and our case studies.
When to book a survey in St Margarets
Building owners and managing agents use thermal surveys to plan work on larger flat roofs. Patterns can point to wet areas and show which parts look sound, so moisture readings can be targeted.
We are often asked to look at:
- Gaps in loft insulation
- Damp patches with no obvious cause
- Leaks far from where the stain appears
- Cold areas below the roof
The streets around a church like Parish Church of St Andrew are frequently among the oldest in a place, and if yours is one of the older homes nearby, tall stacks and steep slopes are easier to judge with close-up aerial photos than from the pavement.
Choosing a roof surveyor
- Whether VAT is added on top
- How they’ll see the roof: from ground level, the loft, the roof or by drone
- Are they insured for the work?
- Which limits apply to the survey
How it works
Photos are taken throughout the visit, so you can see in the report what we found and where. Close-ups come from the safest viewpoint available. A typical visit takes about one to two hours for most homes, plus time to check any thermal findings with moisture readings. In a hamlet or village like St Margarets, a postcode doesn’t always lead to the right gate, so a few directions, or a note of a nearby landmark, help us arrive on time. The visit itself is the same as anywhere else.
- 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’s safe access, in the loft.
- Patterns that stand out are checked with moisture readings.
- Each image is set beside a normal photo and explained in the report.
Preparing for the visit
- Let us know about parking before the day
- Agree roof access with the managing agent if it’s shared
- Let us know about any leaks, stains or damp patches you know of
Getting a price
If you have photos of the roof, send them over. Pictures from the ground or a window are fine; never climb up to get a better view. To send them or to book, ring 07833 053749 or email us.
Related advice
Surveys for landlords and agents in St Margarets
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on.
If you own several properties, you can book surveys for several addresses. To discuss a number of properties, ring 07833 053749 or drop us an email.
What a thermal roof survey looks like in St Margarets
Where the drone is part of the survey, the flight is checked against the Drone Safety Map first. There are about 500,000 buildings on England’s list of listed buildings, and around 10,000 conservation areas. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material, so check with the council.
Take a building like The Cranbourne Primary School: a view from above covers a wide roof far faster than walking it.
St Margarets is about 2 miles south-east of Ware, in Hertfordshire. Houses, flats, blocks and commercial buildings in St Margarets can all book thermal roof surveys, with a written report and photographs every time. Our area takes in places right across Hertfordshire, from the larger towns to small villages. There’s also a page for London.
Postcode districts we cover here for thermal roof surveys: SG12. We offer thermal roof surveys to properties on Station Road, Woodham Way and Folly View. We also cover Stanstead Abbotts (1 mile east), Great Amwell (1 mile north-west), Hailey (1 mile south-west), Little Amwell (1 mile west) and Woollensbrook (2 miles south-west). Further out, we also cover Stevenage (11 miles north-west), St Albans (14 miles west), Bishop's Stortford (9 miles north-east), Welwyn Garden City (8 miles west), Harpenden (15 miles west) and Cheshunt (6 miles south).
Landmarks near St Margarets
We work in homes and buildings around The John Warner School and Jolly Fisherman Public House and the streets around them. There is a railway station in St Margarets itself: St Margarets (Herts) station. Other landmarks nearby include Barrowfield (2.1 miles north-west) and Museum of Street Lighting (1 mile north-west). Open spaces near St Margarets include Amwell Quarry.
Places near St Margarets
Also in St Margarets
How the survey changes by roof type
Felt and asphalt flat roofs
Felt and asphalt roofs frequently show wet areas as patches that differ from the rest. We check those patches with moisture readings.
Parapets, valleys and junctions
Problems where roof slopes and walls meet are often hidden. We combine a close visual check with the thermal images.
Should I look at the roof myself first?
Inside, the loft is a good place to look, with care. Take a torch and only step on boards or joists, and look for staining, damp timber or daylight coming through.
Keep a simple record: when leaks happen, ground-level photos and any past roof work. Share it with us when booking.
FAQs for St Margarets
Do you cover St Margarets?
We do. Every survey there gets the same written report with photos, and visits run on weekdays and weekends.
Is St Margarets within the area you cover?
Yes, smaller places are covered as well as towns. Our area covers London and South East England. Just mention lanes, gates or anything else about the route as you book.
Can you check my loft insulation with a thermal camera?
Gaps and thin areas of insulation can show up on the camera. The difference is clearest when the building is heated and it is colder outside. Where we can reach the loft safely, we check there too.
Can you do a thermal survey in any weather?
The weather makes a real difference. A sunny day beforehand, a dry surface and calm air all help. Rain, wind and heavy cloud can weaken the patterns, so we talk through the forecast when you book.
I live in a flat. Can you survey the roof?
Yes. A shared roof needs access agreed first. Let us know about it when you book and we will explain what’s needed.
Do I have to be there for the survey?
Not always. An outside-only look can be arranged beforehand, but the loft and any rooms with damp need someone to let us in.
How long does the survey take?
Most surveys take about one to two hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. The report follows by email.