Hertfordshire · London and the South East
Thermal imaging roof survey in Great Gaddesden, Hertfordshire
Thermal imaging to find moisture and heat loss patterns in a roof in Great Gaddesden. We have completed more than 5,000 surveys across London and South East England.
- Missing or slipped insulation
- Cold areas below the roof
- Water getting in at parapets and stacks
How a thermal roof survey works in Great Gaddesden
On a flat roof, wet insulation holds heat longer than dry insulation. That means a wet area can show up as a different temperature from the rest of the roof. It helps us see how far water may have spread under the covering, something you can’t usually tell from the surface. We then check those areas with moisture readings. We survey loft conversions, insulated roof spaces and commercial roofs, and people most frequently book us about cold spots on ceilings under the roof and patches of heat loss across the roof.
Older buildings in small places like Great Gaddesden may be listed or in a conservation area. A look from the air or with a thermal camera doesn’t touch the roof, so it is a gentle way to see the condition of an old roof, before anyone decides what work it needs. Changes that affect a listed building’s special interest need listed building consent, so check with the council first.
We keep jargon out of it: where something needs attention, it says so plainly, along with how urgent it is.
- Where
- Great Gaddesden (HP1)
- Region
- Hertfordshire
- Cost
- From £400 inc. VAT
- Report
- Written, with photos, emailed to you
- Appointments
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
How it works
Every roof is different; as a rough guide, the survey takes roughly 1–2 hours for most houses, and about three to four hours for a commercial roof. If you have questions on the day, just ask. Around Great Gaddesden, older homes can have small or awkward roof spaces, so tell us about the loft hatch and any ladder. We only go where it’s safe.
- You let us know about the roof and any damp, leaks or cold rooms.
- The weather and surface conditions are recorded.
- A full inspection and thermal imaging are carried out together.
- Moisture readings are used to check what the camera shows.
- The Premium report reaches you the same day, and we go through it with you in person.
Before the survey
- Tell us about any leaks, stains or damp patches you know of
- Jot down any questions you want answered
- Check we can get to the back of the property
Getting a price
Our price is from £400, including VAT. What you pay depends on the roof’s size, access and the package, so call 07833 053749 or send us an email with the details.
Related advice
What happens if roof problems are left?
For buyers, a thermal survey adds detail that a visual inspection cannot give. Hidden problems found before exchange can be raised with the seller or agent. In a small place like Great Gaddesden, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Prices quoted always include VAT, and the written report is part of the package. Thermal roof survey starts from £400, including VAT. Size, height and access decide where your roof falls.
Why choose Independent Roof Survey in Great Gaddesden
- Every finding written up with photos
- Drone and thermal imaging surveys available
- An independent look at the roof
- 5,000+ roofs surveyed
Places near Great Gaddesden
Other services in Great Gaddesden
What a thermal roof survey looks like in Great Gaddesden
Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. Many roofs like these can’t be judged properly from the pavement, and that’s where a view from above or a thermal image earns its place. If the drone is used for your survey, we check the Drone Safety Map for restrictions before flying.
If you look after a building like Great Gaddesden Church of England Primary School, a view from above covers a wide roof far faster than walking it. If you live in an older home near Church of St John the Baptist, tall stacks and steep slopes are easier to judge with close-up aerial photos than from the pavement.
Great Gaddesden is about 3 miles north-west of Hemel Hempstead, in Hertfordshire. We provide thermal roof surveys for homes and businesses in Great Gaddesden. Across Hertfordshire, we cover Great Gaddesden. We also survey roofs in Milton Keynes.
We survey roofs across the HP1 postcode area for thermal roof surveys. Local streets include Church Meadow, Piper's Hill and Dagnall Road, and we cover them all. We also cover the places around Great Gaddesden: Nettleden (1 mile south-west), Frithsden (1 mile south-west), Potten End (2 miles south-west), Fields End (2 miles south) and Ashridge (2 miles west). Larger places within reach include Watford (10 miles south-east), Hemel Hempstead (3 miles south-east), St Albans (8 miles east), Welwyn Garden City (14 miles east), Harpenden (7 miles east) and Hitchin (15 miles north-east).
What’s near Great Gaddesden
In Great Gaddesden, that means homes and buildings near John F Kennedy Catholic School and The Crown and Sceptre pub and the streets around them. Great Gaddesden’s nearest station is Berkhamsted station, about 3 miles south-west. Well-known places in the area include Hemel Hempstead Hospital (3.2 miles south-east). For a walk, there’s Landpark Wood.
For landlords and managing agents
If you own several properties, surveys can be booked for more than one address. To discuss a number of properties, ring 07833 053749 or use the contact form with the addresses.
Managing agents and residents’ management companies use roof surveys to plan maintenance. The report sets out what needs attention now and what can wait, which helps when budgeting.
Great Gaddesden questions
Is my home in Great Gaddesden listed or in a conservation area?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Is Great Gaddesden in the area you cover?
Yes. We survey roofs across London and South East England, and Great Gaddesden is part of that. You can call 07833 053749 or drop us an email with the address and a few details.
Which survey includes thermal imaging?
It comes with our Premium Survey, which starts from £400. The Premium Survey also covers a full inspection, drone inspection where it applies, structural analysis and a report on the same day.
Does the weather affect a thermal survey?
Conditions on the day have a big effect on what the camera can show. A dry surface, little wind and a sunny spell beforehand help most. Our report notes the conditions and how they affected the findings.
How long is the visit?
Most surveys take roughly 1–2 hours for most homes, plus time to check any thermal findings with moisture readings. The report follows by email.
Does thermal imaging work on slate and tile roofs?
It can be useful, though pitched roofs are usually harder to read. The air space under slates and tiles can hide patterns, so we combine it with an inspection from the loft where there’s safe access.
Can you inspect my roof with a drone?
Where it helps and the rules allow, yes. We hold a CAA Flyer ID and Operator ID and fly a drone under 250g, and every flight depends on the airspace and the weather.
Tips from our surveys
Small things make a difference, both for the survey and for the roof itself. Some pointers:
- Keep a record of when stains appear
- Clear a path to the loft hatch before we arrive
- Talk to us about the weather when booking
- Leave the roof to people with safe access
Many people send the report to roofers, who can then quote for the areas shown. Because the images are paired with photos, it’s easy to find each area on the roof.
Consider a repeat survey after major work on the roof, when the conditions are suitable.
When you need someone else
Our findings are based on what we can see safely on the day, so some things are outside what a survey can do:
- Readings unaffected by sun, shade or reflections
- Whether the deck or roof structure is strong enough
- Insulation values or heat loss calculations
If you’re not sure which survey you need, call 07833 053749 or send us an email and we’ll give you a straight answer. The full list of what we check.
Roof types and parts we check
- Commercial roofs
- Pitched roof slopes
- Loft conversions
- Flat roofs
- Ceilings below the roof
- Insulated roof spaces
Should I look at the roof myself first?
Look up at the roof after a storm, from the ground: pieces of tile or slate on the ground, a gap in the ridge or a lifted flashing are all worth noting. Leave anything above ground level to a survey.
It helps to keep a record: when leaks happen, ground-level photos and any past roof work. Send it with your enquiry, as it helps us focus the survey.