Hertfordshire · London and the South East
Electronic Leak Detection in Hemel Hempstead
Electronic leak detection in Hemel Hempstead and the rest of Hertfordshire. We survey on weekdays, Saturdays and Sundays.
- Leaks through a covered membrane
- Patched roofs that still leak
- Water coming in under a flat roof
Leave it or get it looked at?
Leaks left running can wet the insulation and deck. Locating it early helps limit the damage. For landlords in Hemel Hempstead, a roof defect left alone tends to become a tenant’s damp or leak complaint. Spotting it early is easier than dealing with water damage in an occupied home.
To find out what your survey will cost, phone 07833 053749 or email us and let us know about the roof. The price is agreed before a date is set.
Why book with us
- Two decades and more of roof surveys
- An independent view of the roof
- 5,000+ surveys completed
- Thermal imaging and drones used where they help
Electronic leak detection in Hemel Hempstead
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It uses a small electrical current that passes through the membrane only where there’s a breach. That lets us locate holes that are too small to see, so your roofer can repair them. You get a photo-illustrated written report of each breach found. If you are worried about leaks through a covered membrane and gaps at membrane joints, we can find out what’s behind it.
Business premises in a place the size of Hemel Hempstead frequently sit under big flat or low-pitched roofs. Across a large area, the point where water gets in is rarely obvious. Moisture readings, and electronic leak detection where the membrane suits it, help narrow it down. Membranes usually fail at outlets, upstands and laps, so those get a close look.
Every survey ends with a written report, with photos, emailed to you. It explains the condition of the flat roof membrane, the defects we found and what we recommend.
- Place
- Hemel Hempstead (HP2, HP3, HP1)
- Wider area
- Hertfordshire
- Prices
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Common questions in Hemel Hempstead
My home in Hemel Hempstead has a flat-roofed garage or porch. Is it worth having that looked at?
It’s frequently worth it, as these roofs are easy to forget. On buildings from before 2000, cement sheet roofs may contain asbestos and should be checked by a specialist asbestos surveyor before anyone disturbs them.
Is my home in Hemel Hempstead listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. It matters most if you are planning to re-roof in a different material.
Can every flat roof be tested?
Not every roof is suitable. Certain membranes are conductive, and some build-ups lack a suitable layer below. If your roof will not work, we’ll say so at the start.
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. Access is agreed with you when booking.
Do you test for asbestos?
No. Asbestos surveys and sampling are not something we do. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000, with a recommendation to have a specialist asbestos surveyor check before it is disturbed.
What’s the best way to book?
To arrange a survey, ring 07833 053749 or send us an email with the address, the type of property and what’s prompted the survey. We will confirm the price and agree a day with you.
Will you go up on the roof?
Only when it is safe. Some roofs are too steep or fragile to walk on safely. We use safe viewpoints, the roof space and a drone where applicable.
Common roof problems in Hemel Hempstead
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:
- Leaks through a flat roof with no obvious cause
- Leaks at pipes, outlets or fixings
- New membranes needing a check before handover
- Stains far from any visible defect
If you live in an older home near St Barnabas, the flat roofs on later extensions tend to wear out long before the main roof.
Choosing a roof surveyor
- How long the report takes to arrive
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- Whether the price includes VAT
- Whether the roof space is looked at, where there is one
Tips from our surveys
From years of surveys, a few habits stand out:
- Keep a note of leaks after rain
- Check trades protect the waterproofing
- Don’t keep patching the same spot
- Get leaks traced quickly
Keep the report with the roof’s records. It shows the condition of the membrane on that date.
ELD before paving, ballast or planting goes on is worth considering. It’s easier to find holes before more layers are added.
Towns and villages near Hemel Hempstead
More services for Hemel Hempstead
What electronic leak detection looks like in Hemel Hempstead
Hemel Hempstead is one of the post-war new towns. Homes from the post-war decades are common in the new towns, many with low-pitched roofs in concrete tiles and flat-roofed garages or porches. Flat-roofed garages, porches and extensions from that era may have been re-covered more than once, or not at all. 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. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
With High Elms Manor about 4.6 miles south-east, the area around Hemel Hempstead has a long history. If your home is older, its flat-roofed extension or dormer may be on its second or third covering. Take a building like Broadfield Academy: ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Hemel Hempstead is about 24 miles north-west of London, in Hertfordshire. Hemel Hempstead is part of the area we cover as part of our work across London and South East England. Hemel Hempstead is one of the places in Hertfordshire we cover for electronic leak detection. You can also see our page for London.
We cover every part of the HP2, HP3 and HP1 postcode area for electronic leak detection. Streets in the area include The Queen's Square, High Street and Sun Square, all of which we cover. Hemel Hempstead is on the A41 and A414, which makes it straightforward to reach. Other places close to Hemel Hempstead include Grovehill (1 mile west), Woodhall Farm (1 mile west), Adeyfield (1 mile north-east), Highfield (1 mile north) and Bennetts End (1 mile south-east). We also work in nearby towns such as Watford (7 miles south-east), St Albans (6 miles east), Welwyn Garden City (12 miles east), Harpenden (6 miles north-east), Hatfield (10 miles east) and Borehamwood (10 miles south-east). Hemel Hempstead is among the bigger towns we cover in Hertfordshire.
Landmarks near Hemel Hempstead
Around Hemel Hempstead, our work takes us to homes and buildings near Gadebridge Park, The Full House and Adeyfield School, among other places. The closest station to Hemel Hempstead is Apsley station, about 1.4 miles south of the centre. A little further out are Redbourn Museum (4 miles north-east) and Hemel Hempstead Hospital (0.5 miles west). Green spaces nearby include Verulamium Lake and Long Deans.
What we look for on each type of roof
EPDM rubber roofs
EPDM is a long-lasting flat roof membrane, but punctures and seam failures still happen.
Green and ballasted roofs
Green roofs and ballasted roofs cover the waterproofing. Some methods can work through these layers, depending on the build-up.
How the survey works
On the day, we begin with a quick chat about the roof and anything that is worrying you. After that, we check everything we can see safely, from the ground, from windows, in the loft space and by drone where it applies. Most surveys take more time on a big roof than a small one, and the build-up of the roof makes a difference too. In busier parts of Hemel Hempstead, parking can be tight, so tell us about driveways, permits or nearby car parks, and for flats, mention stairs, lifts and shared entrances. On the day, we look at the roof from the ground, from windows and vantage points, from the loft where there is safe access and from the roof where it is safe, with the drone where applicable.
- We start with what you know about the roof and the leak.
- The roof is assessed for suitability first.
- The test method is chosen to suit the roof.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Preparing for the visit
- Let us know where we can park nearby
- Leave a clear route to the loft
- If you’re buying, let the agent know when we’re coming
How to book
To book a survey, call 07833 053749 or drop us an email and tell us the address and what’s prompted the survey. We will confirm the price before you book.
Related advice
Prices for electronic leak detection in Hemel Hempstead
All our prices include VAT. The things that change the price are:
- House, block, shop or office
- The size of the roof
- Features like valleys, chimneys, dormers and parapets
- Extra roofs, like extensions, dormers or garages
Larger roofs, taller buildings and commercial roofs take longer, so they’re priced to match. The price is confirmed before you book.
Booking your survey
We will usually ask about:
- Any stains, drips or damp patches you’ve seen indoors
- How the loft is reached, if there is one
- The style of property, from a terrace to a block
- When you need the report by
If you have photos of the roof, send them over. Pictures from the ground or a window are fine. To get started, ring 07833 053749 or email us.