Hertfordshire · London and the South East
Thermal imaging roof survey in Northaw Valley, Hertfordshire
Thermal imaging to find moisture and heat loss patterns in a roof around Northaw Valley, with a written report you can act on. Weekday and weekend visits available.
- Possible trapped moisture under a flat roof covering
- Water getting in at parapets and stacks
- Damp patches with no obvious cause
When to book a survey in Northaw Valley
Once a leak has been fixed, people frequently 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.
Most people get in touch when they’ve noticed one of these:
- Areas of a flat roof that may hold water
- Gaps in loft insulation
- Damp that repairs haven’t cured
- Damp around roof outlets and upstands
If you look after a shop, office or commercial unit, for example near Spires Shopping Centre, a commercial roof can be photographed from above without anyone walking on it.
Questions to ask before you book
- What the survey will not cover
- Will they check the loft as well as the outside?
- Their drone registration, if they fly one
- Whether you get a written report with photos
Thermal roof survey in Northaw Valley: what you get
Your report sets out the thermal images alongside ordinary photos, so it is easy to see which part of the roof each one shows. Each one comes with an explanation, the moisture readings and our recommendation. With a Premium Survey, the report reaches you the same day. If you have questions, the in-person consultation gives you time to go through them. There’s a 12-month follow-up as well. If you’ve noticed damp around roof outlets and upstands and possible trapped moisture under a flat roof covering, a survey will tell you what’s going on.
In a village or hamlet like Northaw Valley, 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 looked at before the visit. Steep slopes and tall chimney stacks are where a close-up view adds the most.
The report works through the roof section by section, from the coverings down to the gutters. It records what’s sound as well as what is not.
- Location
- Northaw Valley (EN6)
- Region
- Hertfordshire
- Cost
- From £400 inc. VAT
- Reports
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
The survey, step by step
The aim of the visit is simple: to look at the roof as closely as is safe and record what we find. Notes and photographs go into the written report. The visit normally takes roughly 1–2 hours on an ordinary house, and longer for a large or complex roof. Older rural homes like those around Northaw Valley can have a main roof, lower lean-to roofs and outbuildings all joined together. We work round each section in turn, from the safest viewpoints, and anything we cannot see is noted.
- We start with the roof, its history and any signs of damp or heat loss.
- We check the conditions and note how they may affect the images.
- A full inspection and thermal imaging are carried out together.
- We back up the thermal patterns with moisture readings.
- You get the report the same day, with an in-person consultation to follow.
Before we arrive
- Move anything stored under the loft hatch
- Agree roof access with the managing agent if it is shared
- Point out any leaks or damp patches
Book a survey
Every survey is priced before it’s booked, so you know where you stand. Thermal roof survey starts from £400, including VAT. To book, ring 07833 053749 or drop us an email.
Advice
Also near Northaw Valley
What else we do in Northaw Valley
Tips that help
Over many surveys, some simple habits stand out as worth the effort:
- Keep the report to compare against after any repair
- Move stored items away from the loft hatch
- Check from the ground or a window, never by climbing
- Photograph damp patches with the date
The report explains the conditions on the day and how they affected the images. It helps you judge how firm each finding is.
Clear outlets and gutters regularly, so water does not sit on the roof. Less standing water means less chance of it getting under the covering.
What affects the price in Northaw Valley
Our packages start from £150, inc. VAT. The price for your roof depends on:
- Whether you choose the Basic, Standard or Premium Survey
- The size of the roof
- Whether thermal imaging or a drone is needed
- Chimneys, valleys, parapets and other details
One thing that affects the price is the package: Basic from £150, Standard from £250 or Premium from £400, all including VAT. The roof’s size, height and access matter as well.
What to let us know when you contact us
Before you get in touch, it’s useful to have:
- What made you get in touch
- Any stains, drips or damp patches you’ve seen indoors
- The type of building and roof, such as pitched or flat
- How the loft is reached, if there is one
Prices start from £400, including VAT. What you pay depends on the roof’s size, access and the package, and you can ring 07833 053749 or send us an email to find out.
Questions from Northaw Valley
Is Northaw Valley within the area you cover?
We do. A small place gets exactly the same survey as a big one, with the route planned beforehand.
Does a conservation area affect roof work in Northaw Valley?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you are planning to re-roof in a different material.
Does the weather affect a thermal survey?
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.
How long have you been surveying roofs?
Over 20 years and more than 5,000 surveys.
Does thermal imaging detect leaks directly?
Not directly. It shows surface temperature, and wet areas can show up because they hold heat differently. We confirm what it suggests with moisture readings.
Will you fly a drone over my roof?
Yes, where applicable and safe. We are a CAA-registered drone operator (Flyer ID and Operator ID), flying a sub-250g drone. Drone inspection is part of the Drone Roof Survey and the Premium Survey, where applicable.
Do you carry out surveys on Saturdays and Sundays?
Surveys run seven days a week. To find a day that suits you, phone 07833 053749 or use the contact form.
Thermal roof surveys in Northaw Valley: local notes
Older houses in the South East frequently have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. Older coverings on steep or tall roofs are hard to judge from below, so close-up photos from the air and thermal images help. The wider area around Northaw Valley has a long history of building, with Wyllyotts Manor about 2.4 miles west. If your house is among the older ones, expect a mix of original materials and later repairs on the roof, and any change of roofing material on a listed home needs checking with the council first.
Take an older house close to Parish Church of St Thomas A Becket: older roofs can be steep and hard to see from the street, which is where close-up aerial shots and thermal images help. If you look after a building such as St. John's Senior School, a drone or thermal camera can show a large roof in a single visit.
Northaw Valley is about 2 miles east of Potters Bar, in Hertfordshire. Roofs in Northaw Valley get the same thorough look as anywhere else in Hertfordshire. Northaw Valley is one of the places in Hertfordshire where we work. For surveys nearby, see our London page.
We survey roofs across EN6 for thermal roof surveys. Neighbouring places we cover for thermal roof surveys include Botany Bay (1 mile south-east), Potters Bar (2 miles west), Hadley Wood (3 miles south-west), Bentley Heath (3 miles west) and Cockfosters (3 miles south). We also work in nearby towns such as Watford (11 miles west), Hemel Hempstead (14 miles west), Stevenage (15 miles north), St Albans (9 miles north-west), Welwyn Garden City (8 miles north) and Harpenden (12 miles north-west).
Around Northaw Valley
Locally, jobs take us to homes and businesses close to Two Brewers Public House, Northaw Church of England Primary School and Mount Grace School. Northaw Valley’s nearest station is Crews Hill station, roughly 1.4 miles south-east. Well-known places in the area include Spires Shopping Centre (3.8 miles south-west) and Chase Farm Hospital (2.3 miles south-east). Not far away are Bowyer's Water and Fir and Pond Woods.
Why act early in Northaw Valley
Buyers get extra information from thermal images that the eye can miss. Hidden problems found before exchange can be raised with the seller or agent. Matching old materials, such as handmade tiles or stone slates, can take time to source. That’s one more reason to find defects before they become urgent.
Prices quoted always include VAT, and the written report is part of the package. Prices start from £400, including VAT. Size, height and access decide where your roof falls.
Why us?
- Two decades and more of roof surveys
- More than 5,000 surveys completed
- A photo-illustrated written report
- An independent look at the roof
See our cost guide or our case studies.
For landlords and managing agents
Letting agents can arrange access with tenants, at a time agreed in advance. We survey on any day of the week, which can make access easier.
Where a roof is shared: we need access agreed with the freeholder or managing agent. Mention it when you contact us and we will plan the visit with that in mind.