Hertfordshire · London and the South East
Electronic Leak Detection in Stevenage
Electronic leak detection for homes and businesses in Stevenage. We’ve completed more than 5,000 surveys across London and the South East.
- Damage from equipment installers
- Leaks under green or ballasted roofs
- Patched roofs that still leak
Tips that help
Nothing here needs a ladder. A few suggestions:
- Keep foot traffic on flat roofs to a minimum
- Do not keep patching the same spot
- Record dates and spots where water appears
- Let us know about the membrane and build-up if you know it
The report records each breach location with photos. Pass it to your roofer to repair the breach points.
Limit foot traffic on flat roofs. Many breaches come from foot traffic.
Electronic leak detection in Stevenage: what you get
ELD suits many waterproofing membranes on flat roofs, on homes, blocks and commercial buildings. It helps trace a leak you already have or check a new membrane before handover. Each roof is quoted on its size and build-up. We can test on weekdays and at weekends, depending on the weather. Just ask about your roof. If you’re worried about leaks through a covered membrane and leaks that return after repairs, a survey will tell you what’s going on, whatever the roof.
Blocks of flats in places the size of Stevenage usually have a shared flat roof, which managing agents, residents’ companies or owners have to keep watertight. Leaks into top-floor flats are typically where trouble shows first. The earlier the cause is found, the less damage it does. Let us know who manages the building, as access to a shared roof has to be arranged.
Most points in the report come with a picture, so you can see each defect rather than just read about it. Anything out of sight on the day is listed as such.
- Place
- Stevenage (SG1, SG2, SG3)
- Region
- Hertfordshire
- Prices
- Quoted for your roof
- Reports
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Surveys for landlords and agents in Stevenage
A roof problem in a let property affects your tenants as well as the building. A survey shows what needs attention, so you can plan the work with less disruption.
Any of our surveys can be booked by landlords, agents and building managers in Stevenage. To discuss a property or a block, phone 07833 053749 or email us.
Signs you need electronic leak detection in Stevenage
On a flat roof, water spreads under the waterproofing. The stain inside can be far from the hole, so tracing it by eye is difficult.
Common reasons to book include:
- Holes around roof penetrations
- Leaks showing away from the breach
- A flat roof leak that can’t be traced
- Punctures from foot traffic or tools
The streets around a church such as St Hugh & St John are often among the oldest in a place, and if your home is one of the older ones nearby, flat-roofed rear additions and dormers added over the years are worth checking.
Choosing a roof surveyor
- Their insurance cover
- What’s outside the scope of the survey
- Their drone registration, if they fly one
- Is VAT included in the price?
When you need someone else
Without opening up the roof, some things stay hidden, so a survey has limits:
- Sections we can’t safely access
- Fixing the holes we find
- Roofs whose membrane or build-up isn’t suitable
If in doubt, call 07833 053749 or use the contact form and we will recommend the right survey. What our survey covers.
What we look at
- Flat roof membranes
- Commercial flat roofs
- Single-ply roofs
- Liquid-applied waterproofing
- Roof terraces and balconies
- Green roofs
Your questions about electronic leak detection in Stevenage
Do you cover Stevenage?
Yes, Stevenage is one of the places we work. Every survey there gets the same written report with photographs, and visits run on weekdays and weekends.
Should a flat-roofed garage or porch in Stevenage be checked too?
Yes, if you’d like it included, mention it when booking. Cement sheet roofs on buildings from before 2000 may contain asbestos, so a specialist asbestos surveyor should check before they’re disturbed.
Will you repair the leak?
No, our part is finding the breaches. Your roofer uses the report to target the repair.
Are you insured?
Professional indemnity and public liability insurance cover our surveys. Ask if you need details for a managing agent or building owner.
I live in a flat. Can you survey the roof?
Yes. Shared roofs just need a little more planning. Mention it when you get in touch and we will explain what’s needed.
What will the report tell me?
It explains what we saw, what it means and what we’d suggest, with photographs throughout. It also says if any part of the roof couldn’t be seen safely, so you know exactly what was covered.
Do I have to be there for the survey?
Not always. An outside-only look can be arranged beforehand, but the loft and any rooms with damp need someone to let us in.
Towns and villages near Stevenage
More services for Stevenage
What happens on the day
Where it’s relevant and can be reached safely, the roof space is checked as well as the outside. In the loft, the signs we look for are staining, damp, daylight and sagging. All in, the survey usually takes a time that depends on the size of the roof and how it’s built, and we’ll give you a guide when quoting. Town-centre streets in Stevenage can mean pay-and-display or permit parking, so a word about where to park saves time. Inside, the loft and any room with a stain are the places we will want to see. Outside, we work round the building to find the safe viewpoints.
- First, you tell us about the roof build-up and where water is showing.
- The roof is assessed to see if electronic testing will work on it.
- The method depends on the membrane and what sits above and below it.
- The roof is tested and any breaches are located.
- The breaches are recorded with photos in a report for your roofer.
Before the survey
- Buyers: confirm access with the estate agent or seller
- Clear the way to the loft hatch
- Keep pets out of the way during the survey
Booking a survey
You can call us seven days a week. For a price or to book, call 07833 053749 or use the contact form.
Related advice
How the survey changes by roof type
Single-ply membranes
ELD often works on single-ply membranes, depending on the type and build-up.
Liquid-applied waterproofing
Liquid waterproofing has no laps, but can still have thin spots or holes. Whether ELD works depends on the coating and build-up.
Local flat roofs in Stevenage
Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. About 2.5 miles south-east lies Aston Bury, a reminder of how long the area around Stevenage has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and any change of roofing material on a listed home needs checking with the council first.
If you let a flat or house near Stevenage station, a flat roof over a rented flat is easy to forget until the tenant reports a leak. Anyone responsible for a site like Saint Vincent de Paul Catholic Primary School will know that ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Stevenage is about 26 miles east of Milton Keynes, in Hertfordshire. We cover Stevenage and the rest of Hertfordshire, as part of our work across London and South East England. We cover towns and villages across Hertfordshire, large and small. For surveys nearby, see our Milton Keynes page.
Here we cover the SG1, SG2 and SG3 postcode area for electronic leak detection. Local streets include King Pin Square, Market Square and Market Place, all of which we cover. With the A602 and B197 close by, Stevenage is easy for us to reach. Nearby, we also carry out electronic leak detection in Bedwell (1 mile south-west), Pin Green (1 mile north-west), Chells (1 mile east), St Nicholas (1 mile north) and Rooks Nest (1 mile north). We also work in nearby towns such as St Albans (13 miles south-west), Bishop's Stortford (15 miles east), Welwyn Garden City (8 miles south), Harpenden (10 miles south-west), Hitchin (5 miles north-west) and Hoddesdon (13 miles south-east). Being one of Hertfordshire’s larger places, Stevenage has every kind of building, from houses and flats to offices.
Landmarks near Stevenage
Around Stevenage, our work takes us to homes and buildings near The Heathcote School, Church of Saint Nicholas and Marriotts School and the streets around them. For rail, the closest station is Stevenage station, about 1.2 miles south-west of the centre. Nearby you’ll also find Benington Castle (2.9 miles east) and Stevenage Museum (0.8 miles south-west). Green spaces nearby include Pryor's Wood.