Hertfordshire · London and the South East
Electronic leak detection in Friar's Wash, Hertfordshire
Electronic leak detection around Friar's Wash, with findings in writing and pictures to back them up. Book a weekday or weekend visit.
- Water coming in under a flat roof
- Damp inside with no sign on the roof
- Leaking laps in the waterproofing
Roof by roof
Single-ply membranes
Punctures from foot traffic and equipment are common on single-ply roofs. Testing helps find them.
Bituminous membranes
Bitumen roofs can often be tested electronically though the layers below matter.
Electronic leak detection in Friar's Wash: what you get
ELD can be carried out in more than one way. Low-voltage testing is usually done with the surface wet, while high-voltage testing needs a dry, exposed membrane. Which one suits depends on the membrane and the layers of the roof, and we’ll explain our choice. If neither method suits your roof, we will tell you at the outset. Typical surveys look at leaks through a covered membrane and leaks that return after repairs, on flat roof membranes, roof terraces and balconies and liquid-applied waterproofing.
Some older homes in villages like Friar's Wash 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. Knowing the roof’s condition is the starting point. Changes that affect a listed building’s special interest need listed building consent.
Pictures do a lot of the work in our reports, because a photo of a cracked flashing says more than a paragraph. Anything out of sight on the day is listed as such.
- Where
- Friar's Wash (AL3)
- Region
- Hertfordshire
- Price
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Nearby places to Friar's Wash
Also in Friar's Wash
For landlords and managing agents
We survey roofs for letting agents and landlords as well as homeowners. The report gives you a dated record of the flat roof membrane, with photographs, which helps you plan work between tenancies.
With a portfolio of properties, surveys can be booked for more than one address. To discuss a number of properties, ring 07833 053749 or email us with the addresses.
Questions from Friar's Wash
Is Friar's Wash in the area you cover?
Yes, Friar's Wash is within the area we cover. We work right across London and South East England. You can phone 07833 053749 or drop us an email with the address and a few details, and we’ll talk through which survey suits.
Will you come out to Friar's Wash?
Yes. Friar's Wash is within the area we cover, which takes in towns, villages and rural addresses. We work right across London and the South East. Let us know about access, parking and anything unusual about getting there when booking.
Is my roof suitable for ELD?
Not every roof is suitable. Some membranes conduct electricity, and some build-ups lack a suitable layer below. We will tell you if yours is not suitable before testing.
Does this replace a RICS home survey?
No. We check the roof, not the whole building, and it is not a RICS Level 2 or Level 3 survey. It can sit alongside a RICS survey if you want both.
Will you check the loft?
Where it’s relevant to the survey and there’s safe access, yes. A clear path to the hatch helps.
What happens after the survey?
We email you the written report with photographs and recommendations. You can use it to talk to a seller, an insurer, a roofer or a managing agent, whichever applies.
How many surveys have you done?
More than 5,000 surveys over 20+ years, across London and South East England.
What a survey costs
Every roof is different, so prices are confirmed before booking. These are the things that affect it:
- The roof’s overall size
- The type of building, from a house to a block or an office
- How tall the building is and how easy the roof is to see
- The use of thermal imaging or a drone
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 roof before booking.
What we need to know
A little information up front helps. It helps to include:
- Where water is showing inside, if it is
- What’s prompted the survey
- Any deadline, such as an exchange date
- The address and postcode of the property
Photos help, if you have them. Pictures from the ground or a window are fine; never climb up to get a better view. To send them or to book, call 07833 053749 or send us an email.
What this survey can’t tell you
Our survey isn’t a RICS Level 2 or Level 3 survey, a structural engineer’s report or an asbestos survey. It also has these limits:
- Repairing the breaches (that is for your roofer)
- Sections we can’t safely access
- How wet the insulation is
If in doubt, phone 07833 053749 or email us and we will recommend the right survey. The full list of what we check.
What this survey covers
- Liquid-applied waterproofing
- Single-ply roofs
- Commercial flat roofs
- Roof terraces and balconies
- Flat roof membranes
- Green roofs
Practical tips
From years of surveys, a few habits stand out:
- Check new waterproofing before handover
- Keep outlets clear of debris
- Act on new leaks promptly
- Ask contractors to protect the membrane
Once repairs are made, the roof can be tested again if you want to check them if the build-up allows.
Act on leaks quickly. Water under a membrane can spread.
Electronic leak detection around Friar's Wash
Childwickbury Manor, about 4.5 miles south-east, is one of the historic houses in the wider area around Friar's Wash. If your house is among the older ones, expect a mix of original materials and later repairs on the roof. Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. Mixed in with those pitched roofs are lots of flat ones, over rear extensions, dormers, garages and shops.
Shop and office owners around The Mall Luton may find that flat roofs over shops and units are easy to forget until water comes through a ceiling. For an older house near a landmark such as Church of St Leonard, any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof. Anyone responsible for a site like Flamstead Village School will know that ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Friar's Wash is about 3 miles west of Harpenden, in Hertfordshire. Surveys in Friar's Wash work the same way as everywhere we cover: a close look at what can safely be seen, photos and a clear written report. Friar's Wash is one of the towns and villages in Hertfordshire where we work for electronic leak detection. For surveys nearby, see our Milton Keynes page.
We survey roofs across the AL3 postcode area for electronic leak detection. We cover properties on London Road, Chequers Hill and Old Watling Street. Other places close to Friar's Wash include Flamstead (1 mile south-west), Trowley Bottom (1 mile south-west) and Markyate (2 miles north-west). We also work in nearby towns such as Watford (11 miles south), Hemel Hempstead (5 miles south), Stevenage (12 miles north-east), St Albans (7 miles south-east), Welwyn Garden City (10 miles east) and Harpenden (3 miles east).
Landmarks near Friar's Wash
Around Friar's Wash, our work takes us to homes and buildings near Chequers pub and Roundwood Park School and the streets around them. The nearest railway station is Harpenden station, roughly 3.2 miles east of the centre. A little further out are Luton Castle (3.5 miles north) and Redbourn Museum (2.3 miles south-east). The countryside around Friar's Wash includes Landpark Wood.
How the survey works
Every visit follows the same pattern: we hear what you’ve seen, inspect the roof from every safe vantage point, photograph what we find and make notes for the report. Most visits take as long as needed for the membrane area and the build-up, and we’ll give you a guide when quoting. In a hamlet or village like Friar's Wash, a postcode doesn’t always lead to the right gate, so a few directions are welcome. The visit itself is the same as anywhere else.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- You receive the results to pass to your roofer.
Preparing for the visit
- Dig out any old roof reports or invoices
- Agree roof access with the managing agent if it’s shared
- Have keys ready for side gates, garages or roof access doors
Arrange a survey
Our phone lines are open seven days a week. To book or ask a question, call 07833 053749 or use the contact form.