Hertfordshire · London and the South East
Thermal imaging roof survey in Farnham, Hertfordshire
Wondering about the roof at a property in Farnham? We carry out thermal roof surveys in Farnham and across Hertfordshire, with plain-English findings.
- Moisture around outlets and upstands
- Areas losing heat at the eaves and junctions
- Water that travels before it shows
How a thermal roof survey works in Farnham
We present each thermal image next to a normal photo of the same area, making it clear where on the roof each pattern is. Each one comes with an explanation, the moisture readings and our recommendation. Premium reports are sent the same day. If you have questions, the in-person consultation gives you time to go through them. A follow-up 12 months later is included too. Common reasons to book are cold spots on ceilings under the roof and stains that keep coming back, on insulated roof spaces, pitched roof slopes and loft conversions.
In a village or hamlet like Farnham, roofs can be steep, old and hard to see from the lane. Close-up drone photos and thermal images help show what can’t be reached safely. Weather and airspace are checked ahead of the visit, and the journey is planned ahead of time. Steep slopes and tall chimney stacks are where a close-up view adds the most.
Report times depend on the survey you book: the Basic Survey within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey on the same day.
- Where
- Farnham (CM23)
- Wider area
- Hertfordshire
- Prices
- From £400 inc. VAT
- Your report
- Emailed report with photos and recommendations
- When we survey
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Thermal roof surveys in Farnham: local notes
The flight restriction zone around Stansted Airport comes within about 2 miles of Farnham. If the drone is used for your survey, we check the exact boundary for the address before flying. Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles. Older coverings on steep or tall roofs are hard to judge from below, so close-up photos from the air and thermal images help.
Take a building like Farnham Church of England Primary School: a view from above covers a wide roof far faster than walking it. Much Hadham Palace lies about 4.2 miles south-west, so building around Farnham goes back a long way. For older roofs nearby, a look by drone or thermal camera is a hands-off way to check condition.
Farnham is about 2 miles north of Bishop's Stortford, in Hertfordshire. Whether the building in Farnham is a house, a flat or a commercial unit, the roof can be surveyed. Farnham is one of the towns and villages in Hertfordshire where we work. For surveys nearby, see our Chelmsford page.
We survey roofs across the CM23 postcode area for thermal roof surveys. Close by, we survey roofs in Uppend (1 mile north), Mount Pleasant (1 mile north), Manuden (2 miles north-east), Bentfield Green (2 miles east) and Stansted Mountfitchet (2 miles east). We also work in nearby towns such as Stevenage (14 miles west), Hoddesdon (12 miles south-west), Hertford (12 miles south-west), Ware (10 miles south-west), Baldock (15 miles north-west) and Broxbourne (13 miles south-west).
Near you in Farnham
In Farnham, that means homes and buildings near St Mary's Catholic School. The nearest railway station is Stansted Mountfitchet station, roughly 2.4 miles east of the centre. A little further out are Moated mound (1.7 miles south-west) and Herts and Essex Hospital (2.8 miles south-east). The countryside around Farnham includes Portingbury Hills and Aubrey Buxton Nature Reserve.
What you can safely check yourself
Watch the gutters in a downpour, from a window or the ground. Water spilling over the edge can point to a blockage or a sagging run.
After strong wind, take a look from the pavement or garden: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
How the survey works
Every visit follows the same pattern: we listen to what’s been worrying you, inspect the roof from every safe viewpoint, take photographs as we go and record our findings for the written report. Most visits take about 1–2 hours for a house, though large, tall or awkward roofs take more time. Older rural homes like those around Farnham can have a main roof, lower lean-to roofs and outbuildings all joined together. Each part is looked at from wherever it can safely be seen.
- You tell us about the roof and any damp, leaks or cold rooms.
- We check the conditions and note how they may affect the images.
- We inspect the roof and take thermal images during the same visit.
- Moisture readings are used to check what the camera shows.
- You get the report the same day, with an in-person consultation to follow.
How to prepare
- Let us know about parking near the property
- Check we can get to the back of the property
- Let us know about any leaks, stains or damp patches you know of
Book a survey
To book a survey, call 07833 053749 or drop us an email and let us know the address and what’s prompted the survey. We’ll confirm the price before booking.
Related advice
Towns and villages near Farnham
What else we do in Farnham
Farnham questions
Is my home in Farnham listed or in a conservation area?
The council and Historic England’s list are the places to check. It is worth checking before planning roof work, as both can affect what’s allowed.
Is Farnham within the area you cover?
Yes, we do. We work right across London and the South East, from towns to the smallest villages. The journey is planned ahead, so it helps to know about access.
What does a thermal roof survey show?
The images show how warm or cool each part of the surface is. Unusual patterns can point to trapped water, gaps in insulation or heat escaping, and we check them with moisture readings.
Will thermal imaging find my leak?
It often helps show where to look. Patterns can suggest where trapped water has spread. We combine it with a visual inspection and moisture readings because the camera can’t confirm water on its own.
Can thermal imaging show missing insulation?
Gaps and thin areas of insulation can show up on the camera. The difference is clearest when the building is heated and it’s colder outside. We look from the loft as well, where there is safe access.
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 survey at the weekend?
We survey seven days a week: Monday to Friday, Saturdays and Sundays. Just tell us the days that suit you.
What we look for on each type of roof
Felt and asphalt flat roofs
On felt and asphalt flat roofs, wet insulation can show as a temperature difference across the surface. We check those patches with moisture readings.
GRP fibreglass roofs
Cracks in GRP can let water into the boards beneath. We check cracks by eye and use the images to see whether there is a pattern around them.
Do you need a thermal roof survey in Farnham?
Flat roofs that have leaked for a while can have wet insulation under the covering. Owners want to know how far it has spread before deciding what to do. Thermal images and moisture readings together can show the likely extent.
Typical things we are asked to look at include:
- Missing or slipped insulation
- Wet areas near outlets and upstands
- Damp around chimneys and parapets
- Heat escaping through the roof
Take an older house close to Church of St Mary the Virgin: steep roofs, tall chimneys and hidden valleys can be hard to see from the ground, and that is where a view from above or with a thermal imager helps.
Choosing a roof surveyor
- How long the report takes to arrive
- What they won’t be able to tell you
- Whether the loft space is looked at, where there is one
- Will the report include photos?
Landlords, agents and block managers in Farnham
Businesses and commercial landlords can book us too, including offices, shops and units. Larger roofs take longer.
An agent can book and manage the survey for a landlord, with the report sent to whoever needs it. We agree a time with the tenant beforehand.
Before and after the survey
Here are a few things we’d tell any owner, before and after a survey:
- Don’t climb onto the roof to look for leaks yourself
- Make sure the loft can be reached safely
- Use the report as a baseline for later checks
- Keep dated photos of any marks on ceilings
If the images suggest moisture that cannot be confirmed, we will say what would help next, for example electronic leak detection or a roofer opening up a small section.
After repairs or a new covering, a later survey can confirm things are dry, when the conditions are suitable.