Wokingham · London and the South East
Thermal imaging roof survey in California, Wokingham
Thermal imaging to find moisture and heat loss patterns in a roof for California, from an experienced roof surveyor. Every survey comes with a written report and photos.
- Damp patches with no obvious cause
- Missing or slipped insulation
- Cold spots on ceilings under the roof
Thermal roof survey in California: what you get
A thermal camera can help when the cause of damp isn’t obvious. Water can travel some distance under a roof covering before it shows inside, and the camera can show patterns that help us follow it. We combine the images with a visual inspection and moisture readings, so the findings don’t rely on the camera alone. If you’re worried about damp patches with no obvious cause and cold spots on ceilings under the roof, we can find out what’s behind it, whatever the roof.
Somewhere as small as California, older roofs are frequently steep and partly hidden by trees or outbuildings. Close-up drone photos and thermal images help show what can’t be reached safely. Both the forecast and the airspace are checked first. Steep slopes and tall chimney stacks are where a close-up view adds the most.
Findings are set out part by part, from the main slopes down to the gutters and outlets, with a note and a photo for each point. It records what’s sound as well as what isn’t.
- Location
- California (RG40)
- Region
- Wokingham
- Cost
- From £400 inc. VAT
- Your report
- A written report with photos, by email
- When we survey
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Thermal roof surveys around California
Where the drone is part of the survey, we check the Drone Safety Map for restrictions before flying. If your home is older, it is worth knowing whether it’s listed or in a conservation area before planning roof work. Listed building consent covers changes to a listed building’s special interest, and an Article 4 direction can bring extra controls in a conservation area.
For an older house near a landmark such as Church of St James, thin or patchy insulation under an old roof frequently shows up clearly on a thermal image.
California is about 3 miles south-west of Wokingham, in Wokingham. Whether the building in California is a house, a flat or a commercial unit, we can survey the roof. We cover towns and villages across Wokingham, from the larger towns to small villages. You can also see our page for Reading.
Surveys in RG40 are booked the same way as anywhere else. Streets in the area include Warren Lane, White Horse Lane and Fernbank, all of which we cover. We also cover Arborfield Garrison (1 mile west), Finchampstead (1 mile south-east), Barkham (1 mile north), Langley Common (1 mile north-west) and Eversley (1 mile south-west). Within a short drive, we also cover Reading (7 miles north-west), Wokingham (3 miles north-east), Woodley (5 miles north), Earley (5 miles north-west), Crowthorne (3 miles east) and Lower Earley (4 miles north-west).
What’s near California
Locally, jobs take us to homes and businesses close to The Queen's Oak pub, Bohunt School Wokingham and Shepperlands Farm Nature Reserve, among other places. The closest station to California is Crowthorne station, roughly 2.4 miles east. Nearby you will also find Beaumys Castle (4.7 miles west) and Wokingham Hospital (2.6 miles north-east). Green spaces nearby include Horseshoe Lake and Holt Copse & Joel Park.
Should I look at the roof myself first?
Watch the gutters in a downpour, from a window or the ground. Overflowing water can point to a blockage or a sagging run.
A lot can be seen from the ground. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Never climb onto the roof to look.
When to book a survey in California
Some buyers want extra detail before they commit to a purchase. A Premium Survey adds thermal imaging, a drone inspection where it applies and a same-day report, which helps when timescales are tight.
A survey can pick up problems like:
- Cold areas below the roof
- Water getting in at parapets and stacks
- Missing or slipped insulation
- Leaks far from where the stain appears
Take a building like Gorse Ride Junior School: big roofs are where aerial photos and thermal images show the most at once.
Before booking any roof surveyor
- Which limits apply to the survey
- How long they’ve been surveying roofs
- Which viewpoints they use to see the roof
- Their drone registration, if they fly one
Also near California
What else we do in California
The survey, step by step
Time on site depends on the size and shape of the roof, but as a rough guide the survey takes roughly 1–2 hours for a house, while a commercial roof takes nearer three to four hours. If you have questions on the day, just ask. In a small place like California, access is usually 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 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.
How to prepare
- Dig out any old roof reports or invoices
- Have any questions written down, so nothing gets missed
- For flats, make sure roof access has been agreed
Arrange a survey
Getting a price is simple: just ring 07833 053749 or use the contact form, let us know about the property and we will point you to the right survey. The price is agreed up front.
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California: your questions answered
Is California within the area you cover?
Yes, we do. We cover the whole of London and South East England, from towns to the smallest villages. The journey is planned ahead, so it is useful to know about access.
Is California in the area you cover?
Yes, California is within the area we cover. Our area covers London and the South East. You can ring 07833 053749 or send us an email with the address and a few details, and we will talk through which survey suits.
How long have you been surveying roofs?
We’ve been surveying roofs for over 20 years and have completed over 5,000 surveys across London and the South East.
Are you structural engineers?
No. We note visible signs such as sagging or deflection, but we don’t carry out calculations or give an engineer’s opinion. If we think you need an engineer, the report says so.
Will thermal imaging find my leak?
Thermal imaging can help, alongside other checks. The results depend on conditions on the day. Where it cannot be pinned down, the report suggests a next step, like electronic leak detection.
What conditions are best for thermal imaging?
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 quickly is the report sent?
It depends on the package: the Basic Survey report arrives within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey the same day. Reports are sent by email.
Different roofs, different checks
Felt and asphalt flat roofs
Felt and asphalt sit tight to the layers below, which frequently helps the camera pick up differences. Any patterns are checked with moisture readings.
Parapets, valleys and junctions
Parapet and valley gutters can overflow inside a building. Thermal images, checked with moisture readings, can help trace it.
What a thermal roof survey does not cover
Our findings are based on what we can see safely on the day, so some things are outside what a survey can do:
- Proving moisture from the images alone
- An energy rating for the building
- Whether the deck or roof structure is strong enough
If in doubt, call 07833 053749 or email us and we’ll suggest the right survey. The full list of what we check.
Roofs we survey in California
- Loft conversions
- Insulated roof spaces
- Flat roofs
- Ceilings below the roof
- Commercial roofs
- Pitched roof slopes
Useful tips for California property owners
There is plenty you can do without going near the roof. What helps most:
- Keep the report to compare against after any repair
- Keep a record of when stains appear
- Keep the heating on as usual before a heat loss survey
- Clear a path to the loft hatch before we arrive
You can pass the report to a roofer so they can see where the problem areas seem to be. Because the images are paired with photos, it is easy to find each area on the roof.
Watch for new damp patches on ceilings beneath the roof. Catching a leak early stops insulation getting soaked.