Hertfordshire · London and the South East
Thermal imaging roof survey in Allen's Green, Hertfordshire
Thermal imaging to find moisture and heat loss patterns in a roof in Allen's Green. We have completed more than 5,000 surveys across London and South East England.
- Water that travels before it shows
- Moisture around outlets and upstands
- Thin or uneven insulation in the roof
Do you need a thermal roof survey in Allen's Green?
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.
We’re often asked to look at:
- Areas of a flat roof that may hold water
- Gaps in loft insulation
- Damp that repairs haven’t cured
- Water getting in at parapets and stacks
Much Hadham Palace lies about 2.2 miles north-west, so building around Allen's Green goes back a long way. A drone or thermal survey doesn’t involve any work on the roof, which suits older buildings.
Questions to ask before booking
- What’s outside the scope of the survey
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- Whether you get a written report with photos
- How long the report takes to arrive
About our thermal roof survey in Allen's Green
Thermal imaging is useful when a damp patch has no clear cause. Leaks frequently 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 no conclusion rests on one method alone. Typical surveys look at damp that repairs haven’t cured and possible trapped moisture under a flat roof covering, across pitched roof slopes, commercial roofs and insulated roof spaces.
Villages like Allen's Green often stand in open country, where wind can be strong. Strong wind or heavy rain stops a small drone flying, and calm conditions also suit thermal imaging best. We plan the journey, access and timing around the weather. A change in the forecast can mean moving the visit to another day.
The written findings come by email, easy to pass on to a roofer, an agent or an insurer. Basic reports come within 48 hours, Standard within 24–48 hours and Premium on the day.
- Where
- Allen's Green (CM21)
- Region
- Hertfordshire
- Price
- From £400 inc. VAT
- Your report
- Emailed report with photos and recommendations
- Survey days
- Weekdays, Saturdays and Sundays
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
Also near Allen's Green
Other services in Allen's Green
Before and after the survey
A little preparation and a few simple habits help, both for the survey and for the roof itself. Some pointers:
- Clear leaves from outlets and gutters each autumn
- Check from ground level or a window, never by climbing
- Talk to us about the weather when booking
- Tell us where and when you’ve seen damp or stains
If you are buying, the report gives you specific points to raise with the seller or agent. It’s your decision how to use it, whether that is asking for work or discussing the price.
Have small defects in the covering fixed early. Water that gets under a covering can spread a long way before it shows.
How it works
The visit normally starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the roof space where it can be reached. All told, expect about 1–2 hours on an ordinary house, or half a day or so for a commercial building. Somewhere like Allen's Green needs a little journey planning: let us know about lanes, gates and parking. The roof is looked at from the ground, from windows, from the loft where there’s safe access and from the roof where it is safe.
- We start by discussing the roof, any signs of damp and how the weather may affect the images.
- We check the roof from the ground, from windows and from the roof itself where it is safe.
- We take thermal images of the roof to pick up temperature patterns.
- We check the patterns that stand out with moisture readings where there is safe access.
- The report sets out the images, what they suggest and what we recommend.
Before we arrive
- Mention any parking restrictions on your street
- Tell us about any leaks, stains or damp patches you know of
- Have any paperwork from past roof work to hand
Booking a survey
We confirm the exact price before booking, so you know where you stand. Our price is from £400, including VAT. For a price for your roof, phone 07833 053749 or use the contact form.
Advice
Thermal roof surveys around Allen's Green
Across the South East, older homes tend to have slate or clay tiles, and many later ones concrete tiles, and flat-roofed additions turn up almost everywhere. A drone or thermal camera adds most on the steep, tall and hidden parts of roofs like these. If the drone is used for your survey, the flight is checked against the Drone Safety Map first.
Take an older house close to Former Church of St Anne: steep roofs, tall chimneys and hidden valleys can be hard to see from ground level, and that is where a view from above or with a thermal imager helps.
Allen's Green is about 3 miles south-west of Bishop's Stortford, in Hertfordshire. We survey roofs in Allen's Green as part of our work across London and South East England. Allen's Green is one of the towns and villages in Hertfordshire we cover for thermal roof surveys. Our Chelmsford page covers surveys nearby.
Thermal roof surveys in CM21 work the same way as everywhere else we cover. Nearby, we also carry out thermal roof surveys in Thorley (2 miles north-east), High Wych (2 miles south), Spellbrook (2 miles east), Sawbridgeworth (2 miles south-east) and Thorley Street (2 miles north-east). We also work in nearby towns such as Stevenage (13 miles west), Bishop's Stortford (3 miles north-east), Welwyn Garden City (13 miles west), Hoddesdon (8 miles south-west), Cheshunt (11 miles south-west) and Hatfield (15 miles west).
Near you in Allen's Green
The nearest railway station is Sawbridgeworth station, about 2.5 miles south-east. Well-known places in the area include Herts and Essex Hospital (3.4 miles north-east) and Harlow Mill (3.2 miles south). Open spaces near Allen's Green include Thorley Wash nature reserve.
What we look for on each type of roof
Pitched slate and tile roofs
From inside the loft, the camera can help with damp around chimneys, valleys and roof windows. We check any patterns with moisture readings.
GRP fibreglass roofs
Glossy GRP can reflect heat. We take that into account and check findings with moisture readings.
Your questions about thermal roof surveys in Allen's Green
How do I find out if my home in Allen's Green is listed?
We can’t confirm that for you, but Historic England’s list and your council can. A change of roofing material may need consent in either case.
Do you carry out roof surveys in Allen's Green?
Yes, Allen's Green is within the area we cover. We survey roofs across London and South East England. Just call 07833 053749 or send us an email and let us know about the property.
How long is the visit?
Time on site depends on the roof, but most surveys take about one to two hours at most homes, though large, tall or awkward roofs take more time. The report is sent afterwards by email.
Will you photograph what you find?
Yes. Photos are taken throughout the survey, and they go into the written report alongside our recommendations.
Can you do a thermal survey in any weather?
The results depend on the weather. A dry surface, little wind and a sunny spell beforehand help most. We record the conditions in the report, so you know how much weight to give the images.
Is this a RICS survey?
No. It is a specialist roof survey, not a RICS Level 2 or Level 3 building survey. It focuses on the roof and can sit alongside a RICS survey.
Which days do you carry out surveys?
Surveys run on any day of the week. To arrange a date, call 07833 053749 or use the contact form.
Surveys for landlords and agents in Allen's Green
Where a roof is shared: we need access agreed with the freeholder or managing agent. Tell us about it as you book and we will plan the visit with that in mind.
Landlords, agents and building managers in Allen's Green and across Hertfordshire can book any of our surveys. To discuss a property or a block, ring 07833 053749 or drop us an email.
DIY checks: what’s safe
A lot can be seen from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
During heavy rain, look at the gutters from the ground or a window. Overflowing water can point to a blockage or a sagging run.