Southampton · London and the South East
Flat Roof Survey in Thornhill
Independent flat roof surveys in Thornhill. We have completed more than 5,000 surveys across London and South East England.
- Splits, cracks and crazing
- Dips that suggest the deck is deflecting
- Gaps at upstands and abutments
Why it is worth a survey now in Thornhill
A leak over an office, shop or unit can affect the people and stock underneath. A planned survey lets you budget for work rather than deal with an emergency around the people who use the building. Around Thornhill, a leak in an older house can soak into timbers and plaster, and that’s a much bigger job than the original defect.
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. The price is confirmed before booking.
What you get with us
- More than 5,000 surveys completed
- A report with photos
- Over 20 years’ experience
- An independent view of the roof
See what a roof survey costs and what we found on two real jobs.
Flat roof survey in Thornhill
A flat roof leak frequently travels before it shows on the ceiling. It may start at a split, a lifted seam or a failed upstand well away from the damp patch. That’s why we check every detail across the roof, not only the area above the stain, with photographs of anything that could be letting water in. Whoever carries out the work then has a clear starting point. We survey felt flat roofs, mastic asphalt and single-ply membranes, and common reasons people get in touch are failed seals around rooflight kerbs and splits, cracks and crazing.
In a smaller place like Thornhill, some flat roofs sit in the open, so wind catches loose edges and trims. Felt and bitumen also age in strong sun. The signs are splits, blisters and edges coming away, along with water that sits after rain. Standing water that lingers for days after rain is another sign worth watching for.
We keep jargon out of it: if work is needed, the report says so clearly, along with how urgent it is.
- Location
- Thornhill (SO19, SO18, SO30)
- Region
- Southampton
- Cost
- From £150 inc. VAT
- Reports
- Written, with photos, emailed to you
- Appointments
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Nearby places to Thornhill
Also in Thornhill
Common questions in Thornhill
How do I find out if my home in Thornhill is listed?
For listing, use Historic England’s list; for conservation areas, ask the council. The answer matters most when a change of material is on the cards.
Will you come out to Thornhill?
Yes, Thornhill is covered. We work right across London and South East England, from towns to the smallest villages. The journey is planned ahead, so it helps to know about access.
Can you give me structural calculations?
No. Visible signs such as deflection or sagging are recorded, but we do not provide calculations or an engineer’s opinion. The report will say if you need an engineer.
Can you survey in bad weather?
A survey can usually go ahead in light rain, and it can even help show where water is getting in. Heavy rain or strong wind can ground a drone and make the roof unsafe, so we’ll agree a new date if the weather isn’t suitable.
What does the report include?
A photo-illustrated written report, covering the condition of the flat roof, the defects we found and what we recommend. Standard adds moisture detection and a structural check; Premium adds thermal imaging, drone inspection where applicable and structural analysis.
Can you survey a flat roof on an office or unit?
Yes. Commercial and residential flat roofs are both covered. A commercial roof normally takes about 3 to 4 hours on site, longer if it is large or complex, with larger roofs quoted on their size.
Can you survey a shared roof?
Yes. A shared roof needs access agreed first, with whoever owns or manages the building. Let us know about it when you book and we’ll explain what’s needed.
How the survey changes by roof type
Mastic asphalt
With age, asphalt can harden and crack with movement. We note where this is happening and how widespread it looks.
Felt and built-up roofs
The edges and upstands of a felt roof are normally where trouble starts. We check each one and photograph any that have split or pulled away.
Surveys for landlords and agents in Thornhill
Letting agents often book on a landlord’s behalf, and the report can go to both. We agree a time with the tenant beforehand.
For a freeholder or residents’ company, a roof report is a sound basis for a maintenance plan.
The survey, step by step
We photograph the roof as we go, so the report shows exactly what we saw. Close-ups come from the safest viewpoint available, including by drone where it’s applicable and the weather allows. A typical visit takes roughly 1–2 hours for a house, and longer for a large or complex roof. A visit to Thornhill is planned like any other: the time, the access and where to park are agreed beforehand. Weekday and weekend visits are both possible. Let us know about any garages, outbuildings or extensions you want included.
- You send us the address and, for commercial roofs, an idea of the roof’s size.
- Inside, we look for signs of water under the roof where we can reach.
- We view the roof from safe positions and never walk on fragile surfaces.
- Each defect is photographed and its likely cause noted.
- You get a report setting out the condition and our recommendations, in order of urgency.
Preparing for the visit
- Agree roof access with the managing agent if it is shared
- Dig out any old roof reports or invoices
- If you are buying, check with the agent that we can get in
Getting a price
Our price is from £150, including VAT. The exact figure depends on the roof and the package, and you can call 07833 053749 or use the contact form to find out.
Advice
Practical tips
Here are a few things we’d tell any owner:
- Watch the ceilings below the flat roof for stains
- Treat rooflights and old sheeting as fragile
- Make sure new fixings through the roof are properly sealed
- Plan a survey before the covering reaches the end of its usual life
Landlords, owners and managing agents can keep the report as a dated record of the roof. It’s useful when planning upkeep and setting budgets, and it makes changes easy to spot at the next survey.
Book a survey every few years, and again after new fixings, units or rooflights go in. That catches changes early and builds up a record of the roof.
What affects the price in Thornhill
Our packages start from £150, with VAT included. The price for your roof depends on:
- The height of the building and how the roof can be seen safely
- The use of thermal imaging or a drone
- The type of building, from a house to a block or an office
- How big the roof is
The cost of a survey depends on the roof: how big it is, how high it is, the number of separate roofs and how it can be reached and seen safely. Flat roof survey starts from £150, including VAT.
Getting in touch
These details help when you contact us:
- What kind of property and roof it is
- Any stains, drips or damp patches you’ve seen indoors
- Your timetable, such as an exchange date
- Your postcode, so we can check access and travel
Not sure which survey you need? The easiest way is to ring 07833 053749 or drop us an email and describe the roof and what’s worrying you. We will explain the options and the price.
Flat roofs in Thornhill
Thornhill is within about 3 miles of the coast, so there’s more wind and more salt in the air than further inland. On a flat roof near the sea, edge trims and upstands take the brunt of the wind, and metal parts corrode faster. A number of Hampshire villages keep thatched roofs on their older buildings. Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
Landlords with a home close to Sholing station may find that a flat roof over a rented flat is easy to forget until the tenant reports a leak. Take an older house close to St Christopher: the flat roofs on later extensions tend to wear out long before the main roof. For site and facilities teams at buildings like Thornhill Primary School, schools and public buildings frequently have big flat roofs, and their outlets and upstands need regular checks.
Thornhill is about 2 miles east of Southampton, in Southampton. Whether the building in Thornhill is a house, a flat or a commercial unit, the roof can be surveyed. Thornhill is one of the towns and villages in Southampton where we work for flat roof surveys.
All of SO19, SO18 and SO30 is covered for flat roof surveys. If you need a flat roof survey at a property on Drove Road, Barry Road and Luton Road or a nearby road, we can help. Main roads around Thornhill include the A334. If you are just outside Thornhill, we cover Harefield (1 mile north), Sholing (1 mile south-west), Bitterne (1 mile west), West End (1 mile north) and Chartwell Green (1 mile north). Larger places within reach include Shirley (4 miles west), Regents Park (4 miles west), Maybush (5 miles west), Portswood (3 miles north-west), Coxford (5 miles west) and Freemantle (4 miles west). As one of the bigger places in Southampton, Thornhill has homes, rented property and businesses of every kind.
What’s near Thornhill
Around Thornhill, our work takes us to homes and buildings near Westwood Woodland Park, Woodlands Community College and Grove Park Business and Enterprise College and the streets around them. The nearest railway station is Sholing station, roughly 1.4 miles south-west. A little further out are Moorgreen Hospital (1.4 miles north-east) and Bitterne Local History Society Heritage And Research Centre (1.1 miles west). For a walk, there is Netley Common.