Hertfordshire · London and the South East
Electronic leak detection in Frogmore, Hertfordshire
Electronic leak detection to pinpoint holes in flat roof membranes for Frogmore and the rest of Hertfordshire. We survey on weekdays, Saturdays and Sundays.
- Leaks showing away from the breach
- New roofs to check before paving or planting
- A flat roof leak that can’t be traced
Tips that help
Most of what helps is simple and safe from ground level. Our suggestions:
- Keep a note of leaks after rain
- Have roof specifications to hand
- Clear flat roof outlets regularly
- Don’t leave water getting in
File the report with your roof paperwork. It is a dated record of the membrane’s condition.
Clear flat roof outlets regularly. Standing water puts more pressure on any weak point.
Electronic leak detection in Frogmore: what you get
A leak in a flat roof frequently shows up a long way from where the water gets in. So the stain inside rarely sits under the hole. Electronic leak detection tests the membrane itself, to find where it has been breached. We test and report and leave the repair to your roofer. On suitable roofs, it replaces guesswork with a located breach. We then send you the results in a written report. If you’ve noticed waterproofing to test before it’s covered and leaks at pipes, outlets or fixings, a survey will tell you what’s going on, on commercial flat roofs, liquid-applied waterproofing and green roofs alike.
Some older homes in villages like Frogmore are listed or in a conservation area, which can shape what a new flat roof may look like. Check with the council before planning any change of material. Finding out what state the roof is in gives you the facts to plan with. Changes that affect a listed building’s special interest need listed building consent.
Where we can’t see part of the flat roof membrane, the report says so. You will know exactly what was inspected and what wasn’t, and what we’d suggest next.
- Where
- Frogmore (AL2)
- Wider area
- Hertfordshire
- Prices
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
Honest limits
This isn’t a RICS building survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- Moisture spread under the membrane
- Sections we can’t safely access
- Roofs whose membrane or build-up is not suitable
If in doubt, ring 07833 053749 or use the contact form and we’ll recommend the right survey. What a survey covers and does not.
What we look at
- Liquid-applied waterproofing
- Flat roof membranes
- Commercial flat roofs
- Roof terraces and balconies
- Single-ply roofs
- Green roofs
How we price electronic leak detection
Prices vary from roof to roof, and it comes down to:
- Whether it’s a home or a commercial building
- How many separate roofs there are, like extensions, dormers and garages
- If the survey needs thermal imaging or a drone
- How big the roof is
What a survey costs comes down to the roof itself: 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.
Booking your survey
When you call or email, these details help:
- Whether there’s a loft hatch, a shared roof or tricky access
- The type of building and roof, such as pitched or flat
- Photos of the roof, taken safely from ground level or a window
- What made you get in touch
Getting a price is simple: just phone 07833 053749 or email us and give us some details about the property and we’ll point you to the right survey. We confirm the price before anything is booked.
What we look for on each type of roof
Single-ply membranes
Some single-ply membranes suit electronic testing well but it depends on the product and layers.
Inverted and paved roofs
If the build-up rules out ELD, we’ll say so.
What happens on the day
A survey visit follows a simple order: we hear what you’ve seen, inspect the roof from each safe vantage point, take photographs as we go and make notes for the report. Most visits take as long as needed for the size of the roof and how it’s built, and we’ll give you a guide when quoting. Rural addresses near Frogmore can be hard to find from a postcode alone, so a few directions, or a note of a nearby landmark, help us arrive on time. The visit itself is the same as anywhere else.
- 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 photographs shows where each breach is.
How to prepare
- Keep pets in another room
- If it isn’t your property yet, arrange access through the agent
- Let us know about parking near the property
How to book
To book a survey, phone 07833 053749 or send us an email and tell us the address and what’s prompted the survey. We will confirm the price before you book.
Read more
Flat roofs in Frogmore
High Elms Manor, about 2.8 miles south-west, is one of the historic houses in the wider area around Frogmore. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead. 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. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
If you look after a shop, office or commercial unit, for instance near The Maltings, the flat roofs over shops and commercial units are worth checking before a leak, not after. Anyone responsible for a site like Park Street Church of England Voluntary Aided Primary School will know that schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. If you live in an older home near Church of the Holy Trinity, flat-roofed rear additions and dormers added over the years are worth checking.
Frogmore is about 2 miles south of St Albans, in Hertfordshire. From houses to flats and shops in Frogmore, the roof can be surveyed. Across Hertfordshire, we cover Frogmore. Our London page covers surveys nearby.
Here we cover the AL2 postcode area for electronic leak detection. Local streets include Centaurus Square, Frogmore and Avian Avenue, and we cover them all. We also cover Park Street (1 mile north-west), How Wood (1 mile west), Colney Street (1 mile south-east), Chiswell Green (1 mile north-west) and Sopwell (1 mile north). Within a short drive, we also cover Watford (5 miles south-west), Hemel Hempstead (6 miles north-west), Stevenage (15 miles north-east), Welwyn Garden City (8 miles north-east), Harpenden (7 miles north) and Hoddesdon (14 miles east).
Local landmarks in Frogmore
Typical jobs here are in homes near The Old Red Lion pub and Marlborough Science Academy, among other places. Frogmore has its own railway station: How Wood station. A little further out are Hypocaust Museum (2.3 miles north-west) and Hilfield Castle (4.5 miles south). For a walk, there’s Verulamium Lake and Broad Colney Lakes.
Common questions in Frogmore
How do I find out if my home in Frogmore is listed?
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 you carry out roof surveys in Frogmore?
Yes, Frogmore is one of the places we work. The survey and report are the same in Frogmore as anywhere else.
How does ELD work?
The waterproofing membrane normally stops an electrical current, but a hole lets it through. That lets us find breaches that are too small to see.
Can you inspect my roof with a drone?
Yes, where it is applicable. Our sub-250g drone is flown by a CAA-registered operator with a Flyer ID and Operator ID, and the airspace and weather are checked before every flight.
Will I get photos?
Yes, every report has them. Pictures sit next to the findings they show, so you can see what we mean.
What insurance do you have?
Our surveys are covered by professional indemnity and public liability insurance. Ask if you need details for a managing agent or building owner.
Will you repair the leak?
No. ELD is testing only. The report shows where each breach is so your roofer can fix them.
Leave it or get it looked at?
Water trapped under a membrane can soak insulation and decking. Finding the breach sooner limits that. Where a roof is exposed, as many are in small places like Frogmore, driving rain gets into any weakness, and older walls, once damp, take a long time to dry.
To find out what your survey will cost, ring 07833 053749 or email us with the address and some details. We’ll confirm the figure before booking.
Why us?
- Photographs and a written report every time
- More than 20 years surveying roofs
- Drones and thermal imaging where it applies
- 98% of clients satisfied
Read our cost guide or two real surveys.