Hertfordshire · London and the South East
Thermal imaging roof survey in Sandon, Hertfordshire
Thermal imaging to find moisture and heat loss patterns in a roof in Sandon. More than 5,000 surveys completed across London and South East England.
- Cold areas below the roof
- Damp around chimneys and parapets
- Water that travels before it shows
What a thermal roof survey looks like in Sandon
Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates, with flat-roofed extensions, dormers and garages common everywhere. Steep or complicated roofs are often hard to see from the ground, which is where aerial photos and thermal images help. An older home may be listed, or stand in a conservation area. To find out, check Historic England’s list and ask the council about conservation areas. In either case, a change of roofing material may need consent.
Anyone responsible for a site like Sandon Junior Mixed and Infant School will know that a view from above covers a wide roof far faster than walking it.
Sandon is in Hertfordshire. Wherever you are in Sandon, we can come and survey your property, on a weekday, Saturday or Sunday. We cover towns and villages across Hertfordshire. For surveys nearby, see our Milton Keynes page.
Postcode districts we cover here for thermal roof surveys: SG9. Whether your property is on Payne End, Rushden Road and Dark Lane or a nearby road, we can help. Nearby, we also carry out thermal roof surveys in Roe Green (1 mile south-west), Green End (1 mile south-east), Rushden (2 miles south-west), Buckland (2 miles east) and Chipping (3 miles south-east). Further out, we also cover Stevenage (7 miles south-west), Bishop's Stortford (13 miles south-east), Welwyn Garden City (14 miles south), Hitchin (9 miles west), Hertford (13 miles south) and Letchworth (6 miles west).
Near you in Sandon
For rail, the closest station is Ashwell & Morden station, roughly 2.9 miles north-west. Well-known places in the area include Clothall Castle (3.5 miles south-west). The countryside around Sandon includes Hawkins Wood.
How a thermal roof survey works in Sandon
Thermal imaging can also show where a roof is losing heat. Missing or slipped insulation and gaps at the eaves often show up as temperature differences. The difference shows most clearly when it is warm inside and cold outside. The report shows the images and explains what they may mean. It isn’t an energy rating or a heat loss calculation. If you’ve noticed patches of heat loss across the roof and damp around chimneys and parapets, we can find out what’s behind it, on insulated roof spaces, commercial roofs and pitched roof slopes alike.
Older buildings in small places like Sandon may be listed or in a conservation area. A look from above or with a thermal imager does not touch the roof, so it is a gentle way to see the condition of an old roof. Changes that affect a listed building’s special interest need listed building consent, so check with the council first.
The report is yours to share with whoever needs it: your solicitor, the seller, your insurer, a roofer or the building’s managing agent, whichever applies.
- Place
- Sandon (SG9)
- Wider area
- Hertfordshire
- Cost
- From £400 inc. VAT
- Reports
- A written report with photos, by email
- Survey days
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
More services for Sandon
What we look for on each type of roof
Parapets, valleys and junctions
Problems where roof slopes and walls meet are often hidden. We combine a close visual check with the thermal images.
Pitched slate and tile roofs
Inside the roof space, thermal images can help with damp around stacks, valleys and roof windows. Findings are checked with moisture readings.
When to book a survey in Sandon
Cold rooms under a roof, or high heating bills, lead some people to ask about heat loss. Gaps in loft insulation and poorly insulated roof areas can show up on the camera, particularly when it is warm inside and cold outside.
Signs worth acting on include:
- Water that travels before it shows
- Thin or uneven insulation in the roof
- Damp patches with no obvious cause
- Cold areas below the roof
If you own one of the older houses in the streets near Church of All Saints, older roofs can be steep and hard to see from the street, which is where close-up aerial shots and thermal images help.
What to check before booking
- Whether the inside of the roof is included
- Whether VAT is added on top
- How long the report takes to arrive
- Which limits apply to the survey
Tips that help
From years of surveys, a few habits stand out as worth the effort:
- Keep the heating on as usual before a heat loss survey
- Check from the ground or a window, never by climbing
- Remember the conditions on the day affect the results
- Photograph damp patches with the date
Where a pattern can’t be confirmed, the report says what could help, for example electronic leak detection or a roofer opening up a small section.
Watch for new damp patches on ceilings beneath the roof. Catching a leak early stops insulation getting soaked.
What we do, step by step
Once we’ve finished looking, we write up our findings in a report with photos, emailed to you. As for time on site, it typically takes between one and two hours on an ordinary house, though large, tall or awkward roofs take more time. Cottages and farmhouses around Sandon often have roofs at several levels, with lean-tos and outbuildings attached. Each part is looked at from wherever it can safely be seen, and anything we can’t see is noted.
- First we discuss the roof, any damp and the forecast for the visit.
- The roof is inspected visually from safe positions.
- 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.
Before we arrive
- Show us where any leaks or stains appear
- Make a note of anything you’d like us to look at
- Clear the way to the loft hatch
Arrange a survey
Booking is simple: just ring 07833 053749 or use the contact form and give us some details about the property and we will explain which survey suits. We confirm the price before anything is booked.
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What a thermal roof survey does not cover
To be straight with you, there are limits to any roof survey:
- What’s inside walls or under coverings, without opening up
- A formal energy assessment
- Clear results when the conditions on the day are poor
If you’re not sure which survey you need, ring 07833 053749 or use the contact form and we’ll give you a straight answer before you book. What our survey covers.
What this survey covers
- Loft conversions
- Ceilings below the roof
- Flat roofs
- Commercial roofs
- Insulated roof spaces
- Pitched roof slopes
Sandon questions
Is Sandon within the area you cover?
Yes, we do. We cover the whole of London and South East England, and smaller places are part of that. The journey is planned ahead, so it’s useful to know about access.
Is Sandon in the area you cover?
Yes, Sandon is one of the places we work. The survey and report are the same in Sandon as anywhere else.
Will you walk on the roof?
Not always. Safety comes first, and fragile or steep roofs can’t always be walked on. Safe viewpoints, the loft and a drone where applicable let us see the rest.
How long have you been surveying roofs?
More than 5,000 surveys over 20+ years.
How do I book a survey in Sandon?
Just ring 07833 053749 or send us an email. After a few questions, we confirm the price and fix a day, weekday or weekend.
Which days do you carry out surveys?
We carry out surveys seven days a week. To find a day that suits you, call 07833 053749 or email us.
What happens next?
The report comes by email, and what you do next is up to you: use it with a seller, an insurer, a roofer or a managing agent.
What a survey costs
Several things affect the price of a survey:
- Whether thermal imaging or a drone is needed
- Chimneys, valleys, parapets and other details
- The number of roofs, including extensions and garages
- Roof area
Larger roofs, taller buildings and commercial roofs take longer, so the price reflects that. You will know the figure before booking.
Getting in touch
What helps most when you contact us:
- Pictures from the garden or a window, if you have them
- What made you get in touch
- Any deadline, like an exchange date
- Where any leaks, stains or damp patches show inside
Unsure which package suits your roof? It is easiest to phone 07833 053749 or drop us an email and describe the roof and what’s worrying you. We will talk you through the options and what they cost.