Hertfordshire · London and the South East
Electronic Leak Detection in St Nicholas
Electronic leak detection in St Nicholas, with over 20 years’ experience behind it. Every survey ends with a written report and photos.
- Stains far from any visible defect
- Breaches around outlets and penetrations
- Leaks through a covered membrane
What affects the cost of electronic leak detection
A few things affect what a survey costs:
- Whether thermal imaging or a drone is needed
- The shape of the roof and its details
- Extensions, dormers and garages with roofs of their own
- The size of the roof
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the price for your survey before booking.
What to tell us when you contact us
Some details help us suggest the right survey and price. When you get in touch, it’s useful to mention:
- When you need the report by
- How the loft is reached, if there is one
- The style of property, from a terrace to a block
- The reason for the survey, such as buying, a leak or storm damage
You can call us seven days a week. To book or ask a question, phone 07833 053749 or send us an email.
How electronic leak detection works in St Nicholas
There are different ELD methods. Low-voltage methods normally need a wet roof surface, while high-voltage testing needs a dry, exposed membrane. The right method depends on the membrane and the build-up of the roof, and we will explain our choice. If neither method suits your roof, we’ll tell you before any testing starts. If you’ve noticed leaks at pipes, outlets or fixings and new membranes needing a check before handover, a survey will tell you what’s going on.
In a smaller place like St Nicholas, some flat roofs sit in the open, where wind can catch loose edges and trims. Sun on a flat roof also ages felt and bitumen. The signs are splits, blisters and edges coming away. A flat roof that still holds water days after rain is also worth a closer look.
If any part of the flat roof membrane couldn’t be seen safely, we say so in the report. You’ll know exactly what was inspected and what wasn’t, and what we’d suggest next.
- Location
- St Nicholas (SG1, SG2)
- Region
- Hertfordshire
- Cost
- Quoted for your roof
- Report
- A written report with photos, by email
- Survey days
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
Flat roofs in St Nicholas
Stevenage, which St Nicholas is part of, is one of England’s post-war new towns. Many homes in the new towns date from the post-war decades, with concrete interlocking tiles, low-pitched roofs and flat-roofed garages and porches. Many of those flat roofs have been re-covered over the years, and some may still have older felt. In this part of the South East, older roofs are mostly slate or clay tile and many newer ones concrete tile, and flat-roofed additions turn up almost everywhere. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
Landlords with a home close to Stevenage station may find that flat roofs on let property tend to be checked only when they fail, which is the costly way round. With Aston Bury about 3.3 miles south, the area around St Nicholas has a long history. If your home is older, its flat-roofed extension or dormer may be on its second or third covering.
St Nicholas is about 1 mile north of Stevenage, in Hertfordshire. Wherever you are in St Nicholas, we can carry out electronic leak detection at your property, on a weekday, Saturday or Sunday. Our area takes in places right across Hertfordshire, large and small. We also survey roofs in Milton Keynes.
We survey roofs across the SG1 and SG2 postcode area for electronic leak detection. Local streets include York Road, Ripon Road and Drury Lane, all of which we cover. If you are just outside St Nicholas, we cover Rooks Nest (1 mile west), Pin Green (1 mile south-west), Chells (1 mile south-east), Stevenage (1 mile south) and Bedwell (1 mile south-west). Further out, we also cover St Albans (14 miles south-west), Bishop's Stortford (15 miles east), Welwyn Garden City (9 miles south), Harpenden (10 miles south-west), Hitchin (4 miles north-west) and Hoddesdon (14 miles south-east).
What’s near St Nicholas
We work in homes and buildings around Church of Saint Nicholas and The Nobel School, among other places. The nearest railway station is Stevenage station, about 2 miles south-west of the centre. A little further out are Wymondley Castle (2.7 miles north-west) and Stevenage Museum (1.8 miles south-west). Not far away are Pryor's Wood.
Do you need electronic leak detection in St Nicholas?
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Some are too small to see, but still let water through.
These are some of the problems a survey can pick up:
- Patched roofs that still leak
- Gaps at membrane joints
- Leaks under green or ballasted roofs
- Damage from equipment installers
If you look after a building such as The Leys Primary and Nursery School, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
What to check before booking
- Is VAT included in the price?
- How they plan to inspect the roof safely
- Will they check the loft as well as the outside?
- What happens after the report arrives
What happens if roof problems are left?
Cutting open a flat roof to find a leak can cause more damage. ELD aims to locate the breach first so your roofer knows where to work. In a smaller place like St Nicholas, wherever a roof is exposed, a loose ridge or flashing doesn’t stay loose for long. Wind gets under it and lifts more, and water follows.
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. We quote electronic leak detection for each roof, as the method and time depend on the roof.
What you get with us
- 5,000+ roofs surveyed
- Professional indemnity and public liability insurance
- Surveys on weekdays, Saturdays and Sundays
- Two decades and more of roof surveys
Take a look at how roof surveys are priced or what we found on two real jobs.
Your questions about electronic leak detection in St Nicholas
My home in St Nicholas has a flat-roofed garage or porch. Is it worth having that looked at?
It is often worth it, as these roofs are easy to forget. Cement sheet roofs on buildings from before 2000 may contain asbestos, so a specialist asbestos surveyor should check before they’re disturbed.
Is my home in St Nicholas listed or in a conservation area?
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, and councils can also use Article 4 directions.
Are you insured?
Every survey is covered by professional indemnity and public liability insurance.
Do you work in St Nicholas?
Yes. We cover St Nicholas and the rest of Hertfordshire, as part of our work across London and South East England. For a price, call 07833 053749 or drop us an email.
How do I arrange electronic leak detection in St Nicholas?
To arrange a survey, ring 07833 053749 or drop us an email with the address, the type of property and what’s prompted the survey. We’ll confirm the price and find a day that suits.
Can every flat roof be tested?
ELD doesn’t suit every roof. Certain membranes are conductive, and some build-ups lack a suitable layer below. If your roof won’t work, we’ll say so at the start.
Can you give me structural calculations?
No. We’re roof surveyors, not structural engineers. We’ll recommend an engineer if we see signs that call for one.
How it works
We work from the outside in: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. In total, it takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. A visit to St Nicholas is planned like any other: the time, the access and where to park are agreed ahead of time. Visits can be on weekdays, Saturdays or Sundays. If there are outbuildings or garages you want looked at, mention them.
- We start with what you know about the roof and the leak.
- We check whether the membrane and build-up suit ELD.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- A report with photos shows where each breach is.
Before the survey
- Agree roof access with the managing agent if it’s shared
- Leave side gates unlocked
- If you are buying, check with the agent that we can get in
Getting a price
A quick phone call is typically the easiest start: call 07833 053749 or use the contact form and we will ask a few questions about the roof. The price is agreed before a date is set.
Related advice
For landlords and managing agents
Buyers’ agents can book surveys on behalf of their clients. The report is emailed, so it can go straight to your client.
Where a roof is shared: access has to be agreed with whoever owns or manages the building. Let us know about it as you book and we will plan the survey around it.
Roof by roof
Single-ply membranes
Many offices and units have single-ply roofs. Laps and fixings are where holes often appear.
EPDM rubber roofs
Certain rubber membranes are conductive, which can rule out some methods. We’ll say if the test will not work.