Hertfordshire · London and the South East
Thermal imaging roof survey in Willian, Hertfordshire
Thermal roof surveys in Willian from an independent, experienced roof surveyor. Over 5,000 surveys and 20+ years behind us across London and the South East.
- Damp where roofs meet walls and chimneys
- Wet areas near outlets and upstands
- Areas of a flat roof that may hold water
Thermal roof surveys for homes and businesses in Willian
What a thermal camera can show depends a lot on the weather. A sunny day before the survey, a dry roof surface and little wind all help. Rain, wind and cloud can all make the patterns weaker. We talk through the forecast as you book, and our report notes the conditions and how they affected what we saw. We survey pitched roof slopes, insulated roof spaces and commercial roofs, and common reasons people get in touch are wet insulation beneath the membrane and damp where roofs meet walls and chimneys.
Villages like Willian often stand in open country, where wind can be strong. A small drone cannot fly safely in high wind or heavy rain, and thermal imaging works best with little wind. We plan the journey, access and timing around the weather. A change in the forecast can mean moving the visit to another day.
Report times depend on the survey you book: Basic within 48 hours, Standard in 24–48 hours and Premium the same day.
- Where
- Willian (SG6)
- Wider area
- Hertfordshire
- Prices
- From £400 inc. VAT
- Reports
- A written report with photos, by email
- Appointments
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Common questions in Willian
Is Willian in the area you cover?
Yes, Willian is one of the places we work. The survey and report are the same in Willian as anywhere else, and visits run on weekdays and weekends.
Is Willian within the area you cover?
Yes, Willian is on our map. Villages and rural addresses get the same survey as a town house.
How much does a thermal roof survey cost?
It is part of the Premium Survey, from £400. An in-person consultation and a follow-up 12 months later are included too. For bigger commercial roofs, we quote on size.
I live in a flat. Can you survey the roof?
Yes. Shared roofs just need a little more planning. Let us know about it when you book and we’ll explain what’s needed.
Will the survey show heat loss through my roof?
The camera can point to heat loss and gaps in insulation. We do not give energy ratings or heat loss calculations, but the images show where improvements may help.
How long will you be at the property?
It typically takes an hour or two at a typical home, and more on a big or complicated roof. We will confirm the timing as you book.
Will you walk on the roof?
Not unless it is safe. Safe viewpoints, the roof space and a drone where it applies cover most of what’s needed, and the report notes anything we couldn’t see.
DIY checks: what’s safe
A lot can be seen from ground level. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
Look up at the roof after a storm, from ground level: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
The survey, step by step
The visit has one job: to look at the roof as closely as is safe and record what we find. Everything we note and photograph goes into the written report. The visit typically takes roughly 1–2 hours for a house, and more on a big or complicated roof. Rural addresses near Willian can be hard to find from a postcode alone, so a few directions, or a note of a nearby landmark, help us arrive on time. After that, the survey runs as it would anywhere.
- We start with the roof, its history and any signs of damp or heat loss.
- 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.
- You get the report the same day, with an in-person consultation to follow.
Before we arrive
- Leave side gates unlocked
- Keep pets inside or away from the areas we are looking at
- Dig out any old roof reports or invoices
Booking a survey
Buyers should book once an offer has been accepted, so there is time to use the report before exchange. For any other survey, just phone 07833 053749 or drop us an email when you’re ready.
Read more
What we cannot see
To be straight with you, a roof survey has limits:
- Readings unaffected by sun, shade or reflections
- Structural calculations, which need a structural engineer
- An energy rating for the building
If in doubt, phone 07833 053749 or use the contact form and we will recommend the right survey before you book. What a survey covers and doesn’t.
Roofs we survey in Willian
- Commercial roofs
- Ceilings below the roof
- Loft conversions
- Flat roofs
- Pitched roof slopes
- Insulated roof spaces
Places near Willian
What else we do in Willian
For landlords and managing agents
Letting agents often book on a landlord’s behalf. Access is agreed with the tenant ahead of time.
Where a roof is shared: we need access agreed with the freeholder or managing agent. Tell us about it as you book and we’ll plan the survey around it.
What a thermal roof survey looks like in Willian
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. Where a roof is steep, tall or hard to see from ground level, drone photos and thermal images add detail. Where the drone is part of the survey, the flight is checked against the Drone Safety Map first.
If you live in an older home near Church of All Saints, thin or patchy insulation under an old roof often shows up clearly on a thermal image.
Willian is about 1 mile south of Letchworth, in Hertfordshire. From houses to flats and shops in Willian, the roof can be surveyed on a weekday or at the weekend. Our Hertfordshire coverage includes Willian and the places around it. We also survey roofs in Milton Keynes.
We survey roofs across the SG6 postcode area for thermal roof surveys. We cover properties on Willian Road, Brandles Road and Wymondley Road. Other places close to Willian include Letchworth (1 mile north), Letchworth Garden City (1 mile north), Great Wymondley (1 mile south-west), Walsworth (2 miles west) and Poets Estate (2 miles south-west). Within a short drive, we also cover Stevenage (4 miles south-east), St Albans (15 miles south), Welwyn Garden City (11 miles south), Harpenden (11 miles south-west), Hatfield (14 miles south) and Hertford (13 miles south-east).
Around Willian
Locally, jobs take us to homes and businesses close to The Fox at Willian pub, Church of St Paul and The Highfield School and the streets around them. Willian’s nearest station is Letchworth Garden City station, roughly 1.4 miles north of the centre. A little further out are Lister Hospital (2.5 miles south) and First Garden City Heritage Museum (1.1 miles north). Not far away are Purwell Ninesprings.
Why get it checked now?
Thermal images can suggest the extent of wet areas without cutting into the roof. That helps you and your roofer decide what really needs replacing. Around Willian, older homes frequently have old roof timbers, where water from a failed roof can cause rot if it is left.
What a survey costs comes down to the roof itself: how big it is, how high it is, the number of separate roofs and how safely it can be seen. Thermal roof survey starts from £400, including VAT.
Why book with us
- Thermal imaging and drone inspection where they help
- Surveys on weekdays, Saturdays and Sundays
- Covered by professional indemnity and public liability insurance
- 98% of customers satisfied
See what a roof survey costs and our case studies.
Signs you need a thermal roof survey in Willian
Once a leak has been fixed, people often ask whether the roof is still wet. A thermal survey with moisture readings can show whether wet areas remain when the conditions on the day are suitable.
We are often asked to look at:
- Wet insulation beneath the membrane
- Cold spots on ceilings under the roof
- Moisture around outlets and upstands
- Gaps in loft insulation
If you look after a building such as Lordship Farm Primary School, big roofs are where photos from the air and thermal images show the most at once.
Before booking any roof surveyor
- Their track record with similar roofs
- Will the report include photos?
- Whether VAT is in the quoted price
- Whether the loft is part of the inspection