Hertfordshire · London and the South East
North Mymms Thermal Roof Survey
Thermal imaging to find moisture and heat loss patterns in a roof in North Mymms, using drones and thermal imaging where applicable. Get in touch for a price.
- Leaks far from where the stain appears
- Ceilings that feel colder in places
- Patches of heat loss across the roof
About our thermal roof survey in North Mymms
A thermal survey can point to places where heat is escaping through the roof. Missing or slipped insulation and gaps at the eaves frequently show up as temperature differences. It works best when the building is heated and it is colder outside. The report shows the images and explains what they may mean. It is not an energy rating or a heat loss calculation. We survey flat roofs, commercial roofs and loft conversions, and common reasons people get in touch are wet areas near outlets and upstands and cold areas below the roof.
Older buildings in small places like North Mymms may be listed or in a conservation area. A look from the air or with a thermal camera does not touch the roof, which suits a building where any change needs care, before anyone decides what work it needs. Changes that affect a listed building’s special interest need listed building consent, so check with the council first.
Most points in the report come with a picture, so you can see each defect rather than just read about it. Anything out of sight on the day is listed as such.
- Location
- North Mymms (AL9)
- Wider area
- Hertfordshire
- Prices
- From £400 inc. VAT
- Reports
- A written report with photos, by email
- Survey days
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
The survey, step by step
Safety comes first on every visit. Everything that can be seen safely is inspected, and if part of the roof cannot be seen, the report says so. Most visits take roughly 1–2 hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. In a small place like North Mymms, access is typically the main thing to plan. Mention any outbuildings, barns or garages you want included, and anything about the roof you already know. Visits can be on weekdays, Saturdays or Sundays.
- We go through the roof, the problem and the weather expected on the day.
- The roof is inspected visually from safe positions.
- We take thermal images of the roof and of the loft where we can reach it.
- We take moisture readings where the images suggest a problem.
- Each image is set beside a normal photo and explained in the report.
Preparing for the visit
- Note where any stains or damp appear
- Keep pets inside or away from the areas we are looking at
- Have keys ready for side gates, garages or roof access doors
Book a survey
To get a price for thermal roof surveys in North Mymms, call 07833 053749 or drop us an email. The address, the type of property and what you want to find out help us give you an accurate price.
Related advice
Questions from North Mymms
Is my home in North Mymms listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. It matters most if you are planning to re-roof in a different material.
Do you cover smaller places like North Mymms?
Yes, North Mymms is covered. We survey roofs across London and the South East, and smaller places are part of that. The journey is planned ahead, so it’s useful to know about access.
Does someone need to be in?
Not necessarily. If we only need the outside, we can agree that beforehand, but the loft and any rooms with damp need someone to let us in.
What’s in the survey report?
It sets out what we found, why it matters and what we recommend, backed by photos. Anything we couldn’t see safely is noted too.
How fast do I get the report?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. Each one is emailed, ready to forward.
How does a thermal imaging roof survey work?
A thermal camera shows differences in surface temperature. The patterns can suggest wet insulation, gaps in insulation or heat escaping. Findings are checked with moisture readings.
Can a thermal survey trace a roof leak?
It’s a useful tool for tracing leaks, but not the only one. The results depend on conditions on the day. Where it cannot be pinned down, the report suggests a next step, such as electronic leak detection.
Before and after the survey
Here are a few things we’d tell any owner, before and after a survey:
- Clear leaves from outlets and gutters each autumn
- Use the report as a baseline for later checks
- Leave the roof to people with safe access
- Move stored items away from the loft hatch
Premium Surveys include an in-person consultation, giving you the chance to talk through the images and findings. There’s a 12-month follow-up too.
Have small defects in the covering fixed early. Water that gets under a covering can spread a long way before it shows.
When you need someone else
We only report whatever is safely visible on the day, so some things are outside what a survey can do:
- Confirming water without moisture readings
- Reliable images in rain, strong wind or on a wet roof surface
- Whether the deck or roof structure is strong enough
If you are not sure which survey you need, call 07833 053749 or use the contact form and we’ll give you a straight answer. The full list of what we check.
What this survey covers
- Pitched roof slopes
- Flat roofs
- Insulated roof spaces
- Loft conversions
- Commercial roofs
- Ceilings below the roof
Places near North Mymms
What else we do in North Mymms
What you can safely check yourself
You can learn a lot 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.
After strong wind, take a look from the pavement or garden: pieces of tile or slate on the ground, a gap in the ridge or a lifted flashing are all worth noting. Leave anything above ground level to a survey.
Landlords, agents and block managers in North Mymms
Managing agents and residents’ management companies use roof surveys to plan maintenance. The report sets out what needs attention now and what can wait.
Roof problems in a rented home affect tenants as well as the building. A survey shows what needs attention, so you can plan the work.
Roof by roof
Parapets, valleys and junctions
Junctions where roofs meet walls, parapets and valleys are common places for water to get in. The camera can help show damp around these junctions.
Single-ply and EPDM roofs
On big single-ply roofs, the camera helps show where to take readings. That makes the survey more focused.
Flying and imaging in North Mymms
In this part of the South East, older roofs are mostly slate or clay tile and many newer ones concrete tile, with flat-roofed extensions, dormers and garages common everywhere. A drone or thermal camera adds most on the steep, tall and hidden parts of roofs like these. If your survey includes the drone, the flight is checked against the Drone Safety Map first.
If you live in an older home near Church of St Mary the Virgin, thin or patchy insulation under an old roof frequently shows up clearly on a thermal image. Wyllyotts Manor, about 2 miles south-east, is one of the historic houses in the wider area around North Mymms. For older roofs nearby, a look from above or with a thermal imager is a hands-off way to check condition. For site and facilities teams at buildings such as Brookmans Park Primary School, a view from above covers a wide roof far faster than walking it.
North Mymms is about 2 miles north-west of Potters Bar, in Hertfordshire. We carry out thermal roof surveys in North Mymms for houses, flats, blocks and commercial buildings. North Mymms is one of the towns and villages in Hertfordshire we cover for thermal roof surveys. There is also a page for London.
Postcode districts we cover here for thermal roof surveys: AL9. Whether your property is on St Mary's Church Road, Abdale Lane and Warrengate Road or a nearby road, we can help. Other places close to North Mymms include Welham Green (1 mile north), Colney Heath (2 miles north-west), Sleapshyde (3 miles north-west), Hatfield (3 miles north) and Shenleybury (3 miles west). Larger places within reach include Watford (9 miles south-west), Hemel Hempstead (11 miles west), Stevenage (13 miles north), St Albans (5 miles north-west), Welwyn Garden City (6 miles north) and Harpenden (9 miles north-west).
Near you in North Mymms
Typical jobs here are in homes near Chancellor's School, North Mimms Park and The Old Maypole Public House and the streets around them. The closest station to North Mymms is Brookmans Park station, about 0.7 miles east. A little further out are Shenley Hospital (3.5 miles south-west) and Potters Bar Museum (2 miles south-east). The countryside around North Mymms includes Furzefield Wood and Lower Halfpenny.