Greater London · London and the South East
Grange Mills Thermal Roof Survey
A careful look at the roof at your property in Grange Mills, with photographs and a written report.
- Damp that repairs haven’t cured
- Cold spots on ceilings under the roof
- Water getting in at parapets and stacks
What happens if roof problems are left?
Before replacing a large flat roof, it is useful to know how much of it is actually wet. Thermal imaging, checked with moisture readings, gives a clearer picture before you commit. Many older London roofs have only old felt under the slates, or no underlay at all, so a slipped slate can soon mean water inside. Left alone, that means wet timbers and plaster, which is a far bigger job than the roof fault itself.
Larger roofs, taller buildings and commercial roofs take longer, so the price reflects that. The price is confirmed before booking.
Why book us in Grange Mills
- 5,000+ roofs surveyed
- 20+ years’ experience
- A report with photographs
- Professional indemnity and public liability insurance
Read what a roof survey costs or our case studies.
Thermal roof survey in Grange Mills: what you get
Your report sets out the thermal images alongside ordinary photos, making it clear where on the roof each pattern is. We explain what each pattern may mean, what the moisture readings found and what we recommend. Premium reports are sent the same day. You can talk the findings through with us at the in-person consultation. There’s a 12-month follow-up as well. We’re often asked to look into leaks that are hard to trace and damp around chimneys and parapets, on loft conversions, commercial roofs and pitched roof slopes.
Many London roofs are hidden from the pavement: valley gutters behind parapets, dormers and flat-roofed rear additions. That is where a view from the air or a thermal camera helps, by showing what can’t be reached safely. Weather on the day decides whether it goes ahead, in Grange Mills as anywhere. What a thermal image shows is temperature, so anything that looks like moisture is checked with a meter.
After the visit, you get a written report with photos, sent by email. It explains the condition of the roof, the defects we found and what we recommend.
- Where
- Grange Mills (SW12, SW4, SW2)
- Region
- Greater London
- Cost
- From £400 inc. VAT
- Reports
- Emailed report with photos and recommendations
- When we survey
- Monday to Sunday, daytime
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Roof by roof
Pitched slate and tile roofs
Slate and tile roofs are frequently harder to read with a thermal camera, because of the air space beneath. We combine the images with an inspection from the loft where there is safe access.
Parapets, valleys and junctions
Damp at junctions can be hard to see by eye. We combine a close visual check with the thermal images.
Grange Mills: your questions answered
Can parking be tricky for a visit in Grange Mills?
Parking in Grange Mills, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Is my home in Grange Mills listed or in a conservation area?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it is in a conservation area. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Is thermal imaging useful on pitched roofs?
It can show heat loss and some damp, but it has more limits there. We explain what the images can and can’t tell you, and we check them with a visual inspection and moisture readings.
What will the report tell me?
It sets out what we found, why it matters and what we recommend, backed by photographs. Anything we couldn’t see safely is noted too.
Will thermal imaging find my leak?
Thermal imaging can help, alongside other checks. What it shows depends on the weather and the roof. If the source cannot be confirmed, we will say what could help next, such as electronic leak detection.
When does the report arrive?
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.
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.
Places near Grange Mills
What else we do in Grange Mills
What we do, step by step
Every roof is different, but as a rough guide the survey takes between one and two hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. If you have questions on the day, just ask. London terraces rarely offer a view of the whole roof from one spot, so a visit in Grange Mills moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. Shared stairs or a basement flat? Tell us who holds the keys.
- 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.
- We inspect the roof and take thermal images during the same visit.
- Moisture readings are used to check what the camera shows.
- The Premium report reaches you the same day, and we go through it with you in person.
Getting ready for the survey
- Have keys ready for side gates, garages or roof access doors
- Clear the way to the loft hatch
- Jot down any questions you want answered
How to book
We survey roofs on weekdays and at weekends. To find a date that works for you, phone 07833 053749 or drop us an email.
Related advice
What we can’t see
A survey is a close look at the roof, but it can’t do everything. The main limits are:
- Whether the deck or roof structure is strong enough
- Hidden layers that need to be opened up to check
- Reliable images in rain, strong wind or on a wet roof surface
Not sure which survey suits your roof? You can ring 07833 053749 or use the contact form and we will tell you. What a survey covers and doesn’t.
Roofs we survey in Grange Mills
- Pitched roof slopes
- Ceilings below the roof
- Loft conversions
- Flat roofs
- Insulated roof spaces
- Commercial roofs
What a survey costs
To price your survey, we look at:
- The shape of the roof and its details
- Building height and the viewpoints available
- Commercial roofs and larger buildings
- If the survey needs thermal imaging or a drone
Prices start from £150, with VAT included, for a Basic Survey. The Standard Survey starts from £250 and the Premium Survey from £400. You will know the price for your survey before booking.
What to let us know when you contact us
You do not need to know any roofing terms. Just tell us:
- The type of building and roof, like pitched or flat
- Any photos you have, taken from ground level or a window
- Where any leaks, stains or damp patches show inside
- Access details, such as a loft hatch or a shared roof
A quick phone call is normally the easiest start: ring 07833 053749 or email us. You’ll have a price before anything is arranged.
Thermal roof surveys around Grange Mills
Historic houses such as Kingswood House, about 2.9 miles east, show how far back building in the area around Grange Mills goes. Older homes in the wider area often have features worth a closer look, like lead valleys, tall stacks and roofs that have been patched over the years, and the council can say whether a home is in a conservation area. Grange Mills is inside, or right on the edge of, the flight restriction zone around London Heliport in Battersea. If your survey includes the drone, we ask the heliport for permission first, and only fly if it is given.
If you look after a shop, office or commercial unit, for example near Southside Wandsworth, a commercial roof can be photographed from above without anyone walking on it. As a London address, Grange Mills can be tricky for parking: let us know about permits, visitor bays or off-street space when you book, as a space near the door cannot be promised. Anyone responsible for a site like Henry Cavendish Primary School will know that big roofs are where aerial photos and thermal images show the most at once.
Grange Mills is about 2 miles south-west of Stockwell, in Greater London. Houses, flats, blocks and commercial buildings in Grange Mills can all book thermal roof surveys, with a written report and photographs every time. Grange Mills is one of the places in Greater London we cover for thermal roof surveys.
Here we cover the SW12, SW4 and SW2 postcode area for thermal roof surveys. Streets in the area include Lynn Road, Weir Road and Byrne Road, and we cover them all. Other places close to Grange Mills include Hyde farm estate (1 mile south-east), Balham (1 mile south-west), Clapham Park (1 mile north-east), Streatham Hill (1 mile east) and Streatham Park (1 mile south). Within a short drive, we also cover London (4 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (5 miles north-west), St Pancras (6 miles north) and Shoreditch (6 miles north-east).
What’s near Grange Mills
Typical jobs here are in homes near The Bedford pub, Waldorf School of South West London and La Retraite Roman Catholic Girls' School and the streets around them. Grange Mills has its own railway station: Balham station. Nearby you’ll also find London Sewing Machine Museum (0.9 miles south-west) and St James' Hospital (0.9 miles west). For a walk, there’s Knight's Hill and Battersea Park Lake.
Tips that help
A survey works best with a little help from you, before and after. Some tips:
- Leave the roof to people with safe access
- Check outlets after heavy rain
- Talk to us about the weather when booking
- Keep the report to compare against after any repair
You can pass the report to a roofer so they can see where the problem areas seem to be. Each thermal image is matched to a normal photo, so the areas are easy to locate.
Deal with small splits and lifted seams promptly. Water that gets under a covering can spread a long way before it shows.