Hertfordshire · London and the South East
Electronic leak detection in Letchworth, Hertfordshire
Find out what’s going on with the flat roof membrane before you spend money on it. We carry out electronic leak detection in Letchworth, with photos and a clear written report.
- Leaking laps in the waterproofing
- Damage from equipment installers
- New roofs to check before paving or planting
How the survey works
We look at the roof from outside and, where it’s relevant and there is safe access, from inside the roof space too. Inside, we look for staining, damp, gaps and signs of movement. The whole visit usually takes a time that depends on the membrane area and the build-up, which we’ll explain when we quote. A survey in Letchworth needs access inside and out, including the loft hatch and any rooms with damp. If there’s a side gate or a rear garden, let us know how to reach it. Visits can be on weekdays, Saturdays or Sundays.
- We agree the area to be tested.
- We get the roof ready for testing.
- We work across the roof with the test equipment.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
How to prepare
- Find any records of previous roof work
- Make sure we can get to the back of the property
- If you’re buying, check with the agent that we can get in
Getting a price
Getting a price is simple: just phone 07833 053749 or drop us an email, tell us about the property and we will explain which survey suits. The price is agreed up front.
Advice
Electronic leak detection in Letchworth
Green roofs, ballasted roofs and roofs under paving are harder to test. The layers on top can limit the methods we can use and parts may need to be lifted. We’ll discuss it with you when we quote. Any details of the build-up help because they show what’s under the surface. We will tell you if the roof can’t be tested. We survey roof terraces and balconies, green roofs and single-ply roofs, and people most often book us about breaches around outlets and penetrations and leaks that return after repairs.
In a town like Letchworth, flat roofs are common on rear extensions, garages, porches and dormers. Older ones are often felt, which often lasts around 15–20 years, while newer ones may be EPDM rubber or GRP fibreglass. The usual warning signs are standing water, splits and edges coming away. Standing water days after rain often shows a flat roof needs attention.
Nothing in the report is left vague: if work is needed, the report says so clearly, and where it can wait, that’s said too.
- Location
- Letchworth (SG6)
- Region
- Hertfordshire
- Price
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
Also near Letchworth
Other services in Letchworth
Letchworth: your questions answered
How do I find out if my home in Letchworth is listed?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. The answer matters most when a change of material is on the cards.
How should I get ready for a visit in Letchworth?
Mostly, it’s about access: the loft hatch, any locked gates and where to park in Letchworth. Let us know about known leaks or past repairs as well.
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.
Is it a structural engineer’s report?
No. We note visible signs like sagging or deflection, but we do not carry out calculations or give an engineer’s opinion. Where an engineer is needed, we say so in the report.
How do I book a survey in Letchworth?
Simply ring 07833 053749 or send us an email with the address. After a few questions, we confirm the price and fix a day, weekday or weekend.
What’s in the report?
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.
Can you find leaks on a covered flat roof?
Sometimes. The layers on top and the build-up below decide it, and some may need lifting. We will discuss it before we quote.
Roof by roof
Liquid-applied waterproofing
Testing a liquid-applied roof depends on what’s beneath the coating.
EPDM rubber roofs
Whether an EPDM roof can be tested depends on the membrane and build-up. We check this first.
What electronic leak detection doesn’t cover
We only report what can be seen safely on the day, so there are some things a survey can’t cover:
- Water entering through details rather than the membrane
- Sections we can’t safely access
- Some conductive membranes
If in doubt, phone 07833 053749 or drop us an email and we will suggest the right survey before you book. What a survey covers and doesn’t.
What we look at
- Single-ply roofs
- Green roofs
- Commercial flat roofs
- Roof terraces and balconies
- Liquid-applied waterproofing
- Flat roof membranes
Should I look at the roof myself first?
You can learn a lot from ground level. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Please do not climb up for a closer look.
If you have a loft with safe access, take a look inside. Use a torch and stay on the joists or boards, and look for staining, damp timber or daylight coming through.
What electronic leak detection looks like in Letchworth
Across the South East, older homes tend to have slate or clay tiles, and many later ones concrete tiles, with flat-roofed extensions, dormers and garages common everywhere. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. About 4.5 miles north lies Hinxworth Place, a reminder of how long the area around Letchworth has been built on. Older homes in the wider area often have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years, and any change of roofing material on a listed home needs checking with the council first.
Anyone responsible for a site like Hillshott Infant School and Nursery will know that ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. If your home is one of the older ones in the streets near Church of St Paul, flat-roofed rear additions and dormers added over the years are worth checking.
Letchworth is about 5 miles north of Stevenage, in Hertfordshire. Letchworth is one of many places we visit across Hertfordshire, for houses, flats and commercial buildings. We cover towns and villages across Hertfordshire, large and small. We also survey roofs in Milton Keynes.
We work across the SG6 postcode area for electronic leak detection. If you need electronic leak detection at a property on Station Road, Willian Church Road and Rowland Way or anywhere close by, we can help. You will find Letchworth on the A505 and B656, which makes it straightforward to reach. We also cover Letchworth Garden City (1 mile west), Norton (1 mile north-east), Willian (1 mile south), Walsworth (2 miles south-west) and Poets Estate (2 miles south-west). Larger places within reach include Stevenage (5 miles south), Welwyn Garden City (12 miles south), Harpenden (12 miles south-west), Hitchin (3 miles south-west), Hatfield (15 miles south) and Hertford (14 miles south-east).
Near you in Letchworth
Locally, jobs take us to homes and businesses close to Norton School, The Highfield School and Three Magnets pub. There’s a railway station in Letchworth itself: Letchworth Garden City station. Well-known places in the area include Fairfield Hospital (1.9 miles north-west) and First Garden City Heritage Museum (less than half a mile south). Not far away are Purwell Ninesprings.
How we price electronic leak detection
The price reflects the time and kit the roof needs. The main factors are:
- Chimneys, valleys, parapets and other details
- Commercial roofs and larger buildings
- Any need for thermal images or a drone flight
- The roof’s overall size
The cost of a survey depends on the roof: its size, its height, how many sections it has 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.
Helping us price your survey
These details help when you get in touch:
- Pictures from the garden or a window, if you have them
- How the loft is reached, if there is one
- Any deadline, such as an exchange date
- The kind of building and roof involved
For a price for electronic leak detection in Letchworth, ring 07833 053749 or send us an email. A few details about the property and the roof help us price the survey accurately.
Common roof problems in Letchworth
Joints and laps in a membrane can fail over time. Small openings at laps can leak long before anyone notices.
Signs worth acting on include:
- Leaks through a flat roof with no obvious cause
- Holes around roof penetrations
- New roofs to check before paving or planting
- Damage from equipment installers
If you own a rental within reach of Letchworth Garden City station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Choosing a roof surveyor
- Which limits apply to the survey
- Whether you can ask questions once you have the report
- Are they insured for the work?
- Whether the loft is part of the inspection