Greater London · London and the South East
Flat roof survey in Fortis Green, Greater London
Surveys of flat roofs on homes, extensions and commercial buildings across Fortis Green, using drones and thermal imaging where applicable. Call or email for a price.
- Loose or cracked edge trims
- Cracked or split membrane
- Standing water left after rain
Flat roof survey in Fortis Green: what you get
Flat roofs deal with rain in a very different way from pitched ones. Because rain sits on it for longer, a small split, an open seam or a blocked outlet matters more. The surface, the falls, the upstands and the trims are all looked at closely, and we note any sign that the deck below has got wet. The aim is to find problems before they show up as a stain on a ceiling. We survey upstands and outlets, mastic asphalt and single-ply membranes, and the problems we are asked to look at most are loose or cracked edge trims and failed seals around rooflight kerbs.
Commercial and residential blocks across London often have big flat roofs with plant, rooflights and access walkways. Every penetration and upstand is a place where a membrane can fail. For a building in Fortis Green, access is agreed with whoever manages the roof ahead of the visit. Plant bases, rooflights and cable entries are all places where water can get in.
The written findings come by email, easy to pass on to a roofer, an agent or an insurer. Turnaround is within 48 hours for Basic, 24–48 hours for Standard and same day for Premium.
- Where
- Fortis Green (N10, N2, N6)
- Wider area
- Greater London
- Cost
- From £150 inc. VAT
- Report
- A written report with photos, by email
- Appointments
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Landlords, agents and block managers in Fortis Green
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out with the most urgent first where relevant, which helps when budgeting.
A roof problem in a let property affects your tenants as well as the building. A survey helps you spot issues early and plan the work.
FAQs for Fortis Green
Do you carry out roof surveys in Fortis Green?
Yes, Fortis Green is one of the places we work. The survey and report are the same in Fortis Green as anywhere else, and visits run on weekdays and weekends.
Is my home in Fortis Green listed or in a conservation area?
The council and Historic England’s list are the places to check. It’s worth checking before planning roof work, as both can affect what’s allowed.
Do I have to be there for the survey?
If the survey includes the loft or the inside of the building, someone needs to let us in. We will talk about access when booking.
Do you survey roofs on blocks of flats?
Yes, if the building owner or managing agent agrees access. On a shared roof we can only inspect the parts we’re allowed to reach.
What if it rains on the day?
It depends on the weather and the survey. In high wind or heavy rain, a drone can’t fly and access may not be safe, so we’d move the date with you.
What do I do with the report?
We email you the written report with photographs and recommendations. It is yours to share with a seller, insurer, roofer or managing agent, whichever applies.
Do you cover flat roofs on blocks of flats?
Yes. We survey flat roofs on commercial buildings as well as homes. Expect about 3 to 4 hours on site for most commercial roofs, with larger roofs quoted on their size.
Local flat roofs in Fortis Green
Historic houses such as Heath Hall, about 1.4 miles south-west, show how far back building in the area around Fortis Green goes. Older roofs in the wider area can hide decades of patch repairs, so the detail matters. Outer London has plenty of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. Hips, bay roofs and later loft conversions are typical of those semis, if your home is one of them. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
Fortis Green is in London, so parking needs planning: let us know about parking bays, permits or a driveway when you book, as a space near the door can’t be promised. If you look after a building like Fortismere School, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Fortis Green is about 1 mile south-east of Finchley, in Greater London. Wherever you are in Fortis Green, we can come and survey your property, on a weekday, Saturday or Sunday. Fortis Green is one of the places in Greater London we cover. You can also see our page for London.
We cover every part of the N10, N2 and N6 postcode area for flat roof surveys. Whether your property is on Hill Road, Durham Road and Steeds Road or anywhere close by, we can survey it. With the A504 close by, Fortis Green is simple for us to get to. Other places close to Fortis Green include Muswell Hill (1 mile east), East Finchley (1 mile west), Highgate (1 mile south), Crouch End (1 mile south-east) and Hampstead Garden Suburb (2 miles south-west). We also work in nearby towns like London (7 miles south), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (7 miles south), St Pancras (5 miles south) and Shoreditch (6 miles south-east).
Local landmarks in Fortis Green
Around Fortis Green, our work takes us to homes and buildings near Tollington School, Cherry Tree Wood and The Clissold Arms, among other places. For rail, the closest station is Alexandra Palace station, about 1.4 miles east of the centre. A little further out are Kenwood House (1.6 miles south-west) and Grand Arcade (1.8 miles north-west). For a walk, there is Highgate Hill and Glebelands Local Nature Reserve.
Before and after the survey
There is plenty you can do without going near the roof. Here’s what helps most:
- Note the date and type of any roof work
- Book a survey every few years
- Check the outlets after the leaves fall
- Watch the ceilings below the flat roof for stains
Once we have been, the findings are written up with photos. It explains the covering, its condition and every defect, and what we recommend. Turnaround is within 48 hours for a Basic Survey, 24 to 48 hours for a Standard Survey and the same day for a Premium Survey.
Keep outlets, gutters and hoppers clear, particularly after the leaves fall. A flat roof that drains well wears much more slowly.
How we price flat roof surveys
We confirm the price for your survey before you book. These are the things that affect it:
- Whether thermal imaging or a drone is needed
- Chimneys, valleys, parapets and other details
- The type of building, from a house to a block or an office
- Extensions, dormers and garages with roofs of their own
Thermal imaging and drone inspection (where applicable) come with the Premium Survey, which starts from £400, inc. VAT. We can help you choose the package that fits what you want to find out.
Helping us price your survey
Some details help us suggest the right survey and price. When you contact us, it helps to mention:
- Where the property is, with the postcode
- Whether there’s a loft hatch, a shared roof or tricky access
- Where any leaks, stains or damp patches show inside
- The kind of building and roof involved
Unsure which package suits your roof? The easiest way is to phone 07833 053749 or email us and describe the roof and why you want it surveyed. We will talk you through the options and what they cost.
Do you need a flat roof survey in Fortis Green?
Water that does not drain sits on the roof and speeds up wear. Blocked outlets, poor falls and a sagging deck are the usual causes. Leaves and silt from nearby trees can soon choke an outlet.
Things that often lead to a survey include:
- Dips that suggest the deck is deflecting
- Pools of water lying on the roof
- Outlets that hold water back
- Splits, cracks and crazing
Shop and office owners around Grand Arcade may find that flat roofs over shops and units are easy to forget until water comes through a ceiling.
Choosing a roof surveyor
- Whether you get a written report with photos
- What follow-up you get after the report
- Whether any drone flown is registered with the CAA
- Their track record with similar roofs
Towns and villages near Fortis Green
Other services in Fortis Green
When you need someone else
To be straight with you, a roof survey has limits:
- A fixed date for when the roof will need replacing
- Testing older roof sheets for asbestos
- A structural engineer’s assessment of the deck
If in doubt, phone 07833 053749 or use the contact form and we will point you to the right survey. What a survey covers and does not.
What we look at
- EPDM rubber
- Upstands and outlets
- Felt flat roofs
- GRP fibreglass
- Mastic asphalt
- Single-ply membranes
What we do, step by step
Once we have finished looking, we write up our findings as a written report with photos, emailed to you. On timing, it normally takes an hour or two for a house, and longer for a large or complex roof. In converted houses and mansion blocks, the loft hatch is often on a shared landing. If that applies to your building, it is useful to agree access with the neighbours or the managing agent first. Otherwise, the visit in Fortis Green runs like any other.
- You tell us about the roof, its covering if you know it, and any leaks.
- The roof is inspected from safe viewpoints, and from the roof itself where that is safe.
- Every part of the roof we can see is looked at: covering, falls, upstands, outlets, trims and rooflights.
- Where there is safe access, we check the ceilings and spaces below for signs of water.
- We send a written report with photos, the defects we found and what we recommend.
Before the survey
- Agree roof access with the managing agent if it’s shared
- Make a note of anything you’d like us to look at
- Keep pets out of the way during the survey
Arrange a survey
Most bookings start with a short call: call 07833 053749 or send us an email, and we’ll ask about the building and what you need. The price is agreed before a date is set.