Surrey · London and the South East
Thermal Roof Survey in Merstham
Wondering about the roof at a property in Merstham? You can book a thermal roof survey in Merstham and across Surrey.
- Moisture around outlets and upstands
- Heat escaping through the roof
- Water that travels before it shows
Thermal roof survey in Merstham
A thermal survey is not a quick fix for every roof problem. Sun, shade, reflective surfaces and wind can all change what the camera shows. That is why we check findings with moisture readings and a close visual inspection. Our report says plainly what the camera picked up and how sure we can be. If a finding cannot be confirmed, the report suggests a next step. Common reasons to book are wet insulation beneath the membrane and missing or slipped insulation, on ceilings below the roof, flat roofs and insulated roof spaces.
In a small place like Merstham, open ground can mean strong wind. Strong wind or a downpour stops a small drone flying, and calm conditions also suit thermal imaging best. The visit is planned around the forecast, along with the journey and access. A change in the forecast can mean moving the visit to another day.
You receive the findings 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.
- Place
- Merstham (RH1)
- Region
- Surrey
- Price
- From £400 inc. VAT
- Reports
- A written report with photos, by email
- Appointments
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Thermal roof surveys in Merstham: local notes
In Surrey, older roofs are often handmade clay tile, with tile-hanging on many upper walls. A few of Surrey’s oldest buildings have heavy Horsham stone slab roofs. Steep or complicated roofs are often hard to see from the ground, which is where photos from the air and thermal images help. If your home is older, it’s worth knowing whether it’s listed or in a conservation area before planning roof work. Changes that affect a listed building’s special interest need listed building consent, and councils can also use Article 4 directions to control changes in conservation areas.
If you look after a building like Merstham Primary School, thermal images can show where wet insulation sits under a big flat roof. The streets around a church such as Church of St Katharine are often among the oldest in a place, and if your home is one of the older ones nearby, steep roofs, tall chimneys and hidden valleys can be hard to see from ground level, and that is where a view by drone or thermal camera helps.
Merstham is about 2 miles north of Redhill, in Surrey. If you are in Merstham, booking works exactly as it does anywhere else: get in touch, agree the price and pick a day. Our Surrey coverage includes Merstham and the places around it. Our Crawley page covers surveys nearby.
Surveys in RH1 are booked the same way as anywhere else. We cover properties on London Road North, Shepherd's Hill and Church Hill. Neighbouring places we cover for thermal roof surveys include South Merstham (1 mile south), Gatton (1 mile south-west), Holmethorpe (1 mile south), Hooley (2 miles north) and Netherne on-the-Hill (2 miles north). Within a short drive, we also cover Epsom (7 miles north-west), Horley (6 miles south), Ewell (7 miles north-west), Reigate (3 miles south-west), Walton-on-Thames (14 miles north-west) and Caterham (3 miles north-east).
Landmarks near Merstham
Typical jobs here are in homes near Merstham Park School, Nutfield Marshes and East Surrey College and the streets around them. The nearest railway station is Merstham station, roughly 0.5 miles south of the centre. Other landmarks nearby include Surrey Fire Museum (2.8 miles south-west) and Bletchingley Castle (2.8 miles south-east). The countryside around Merstham includes South London Downs National Nature Reserve and Colley Hill.
What we do, step by step
Every visit follows the same pattern: we hear what you’ve seen, inspect the roof from every safe vantage point, take photos as we go and record our findings for the written report. It normally takes about one to two hours for most homes, plus time to check any thermal findings with moisture readings. Older roofs in small places like Merstham can have low, tight loft spaces, so tell us about the loft hatch and any ladder. We only go where it’s safe.
- We talk through the roof, any damp or leaks, and the weather expected on the day.
- The roof is inspected visually from safe viewpoints.
- Thermal images are taken to show differences in surface temperature.
- 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 the survey
- Agree roof access with the managing agent if it is shared
- Make a note of anything you’d like us to look at
- Point out any leaks or damp patches
How to book
Unsure which package suits your roof? It’s easiest to call 07833 053749 or drop us an email and describe the roof and why you want it surveyed. We’ll explain the options and the price.
Read more
Places near Merstham
What else we do in Merstham
What a thermal roof survey doesn’t cover
It’s a careful look at the roof, not the whole story. Its limits include:
- Hidden layers that need to be opened up to check
- An energy rating for the building
- Seeing water directly, as the camera shows temperature, not moisture
If in doubt, call 07833 053749 or drop us an email and we’ll point you to the right survey. What a survey covers and doesn’t.
Roofs we survey in Merstham
- Commercial roofs
- Pitched roof slopes
- Insulated roof spaces
- Flat roofs
- Ceilings below the roof
- Loft conversions
For landlords and managing agents
Any of our surveys can be booked by landlords, agents and building managers in Merstham. To discuss a property or a block, ring 07833 053749 or use the contact form.
Landlords and letting agents in Merstham book surveys as well as householders. The report gives you a dated record of the roof, with photographs, useful for planning maintenance.
What we are asked to look at in Merstham
After a repair, some owners want to know whether the roof has dried out. A thermal survey with moisture readings can show whether wet areas remain, given suitable conditions on the day.
Look out for signs like these:
- Cold areas below the roof
- Patches of heat loss across the roof
- Leaks that are hard to trace
- Possible trapped moisture under a flat roof covering
If you look after a shop, office or commercial unit, for instance near The Belfry, large commercial roofs are frequently easiest to see from the air or with a thermal camera.
Questions to ask before you book
- Do they have a CAA Flyer ID and Operator ID for drone work?
- What happens after the report arrives
- Whether the loft space is looked at, where there is one
- How long the report takes to arrive
FAQs for Merstham
Is drone flying allowed in Merstham?
It depends on the exact address and the weather on the day. The flight restriction zone around Redhill Aerodrome comes within about 2 miles of Merstham. We check the exact boundary for the address before flying, and if the roof falls inside it, we ask for permission first. Strong wind or heavy rain also stops a small drone flying.
How do I find out if my home in Merstham is listed?
Your council is the best source, with Historic England’s list for listed buildings. Both listing and conservation areas can limit changes of roofing material.
Is thermal imaging good for finding leaks?
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, like electronic leak detection.
Will you photograph what you find?
Yes, plenty. Each finding is shown in a picture where possible.
Can thermal imaging show missing insulation?
Thermal images can suggest where heat is escaping and where insulation may be missing. The survey is not an energy rating or a heat loss calculation, but the report shows where to look more closely.
Does thermal imaging work on slate and tile roofs?
On pitched roofs, the camera can point to heat loss and some damp patterns. We explain what the images can and cannot tell you, and we check them with a visual inspection and moisture readings.
Which survey includes thermal imaging?
Our Premium Survey, from £400, includes thermal imaging. You also get an in-person consultation and a 12-month follow-up. For bigger commercial roofs, we quote on size.
Tips from our surveys
Getting the most from a thermal roof survey starts before we arrive and carries on afterwards. Tips:
- Don’t switch the heating off ahead of the visit
- Talk to us about the weather when booking
- Check outlets after heavy rain
- Clear a path to the loft hatch before we arrive
If the images suggest moisture that can’t be confirmed, we’ll say what would help next, 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.
Prices for thermal roof surveys in Merstham
The price reflects the time and kit the roof needs. The main factors are:
- The number of roofs, including extensions and garages
- Any need for thermal images or a drone flight
- Commercial roofs and larger buildings
- Basic, Standard or Premium
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. Prices start from £400, including VAT.
What we need to know
Here’s what helps us most when you contact us:
- Access details, such as a loft hatch or a shared roof
- Where any leaks, stains or damp patches show inside
- When you need the report by
- The address and postcode of the property
We confirm the price for your roof before booking, so you know the cost up front. Prices start from £400, including VAT. For a price for your roof, call 07833 053749 or drop us an email.