Hertfordshire · London and the South East
Electronic leak detection in Deacon's Hill, Hertfordshire
Get a clear view of the flat roof membrane at a property in Deacon's Hill from an independent roof surveyor. We visit on weekdays and at weekends.
- Leaks through a flat roof with no obvious cause
- Holes around roof penetrations
- Failed seams and laps
How electronic leak detection works in Deacon's Hill
Our ELD report shows where each breach was found, with photos. It tells your roofer exactly where to repair rather than guessing. Repair costs are not part of the report, so your roofer prices the work. A retest after repairs can check the work if the build-up allows. You get a written report with photos. We survey liquid-applied waterproofing, commercial flat roofs and single-ply roofs, and common reasons people get in touch are patched roofs that still leak and leaks showing away from the breach.
Older buildings in small places like Deacon's Hill may be listed or in a conservation area, which can shape what a new flat roof may look like. If you’re planning work, check with the council first. Finding out what state the roof is in gives you the facts to plan with. Listed building consent is needed for changes that affect a listed building’s special interest.
The report works through the roof section by section, from the main slopes down to the gutters and outlets, with a note and a photo for each point. It records what’s sound as well as what is not.
- Place
- Deacon's Hill (WD6)
- Wider area
- Hertfordshire
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- When we survey
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Why it is worth a survey now in Deacon's Hill
Not every leak is in the membrane. Testing shows whether the membrane is breached, so other causes can be checked. In a small place like Deacon's Hill, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
All our prices include VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You will know the price for the job before you book.
What you get with us
- An independent look at the roof
- Visits on any day of the week
- 5,000+ surveys completed
- 20+ years’ experience
Read what a roof survey costs or two real surveys.
Nearby places to Deacon's Hill
Also in Deacon's Hill
How it works
The visit usually starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. All told, expect a time that depends on the membrane area and the build-up, and we’ll give you a guide when quoting. Older roofs in small places like Deacon's Hill can have low, tight loft spaces, so let us know about the loft hatch and any ladder. Only areas that can be reached safely are inspected.
- 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.
- We test the membrane and find where current is passing through it.
- You get a report showing where each breach is, for your roofer to repair.
Getting ready for the survey
- Have any paperwork from past roof work to hand
- Tell us about any leaks, stains or damp patches you know of
- If you are buying, let the agent know when we’re coming
Booking a survey
Every survey is priced before it’s booked, so you know the cost up front. Electronic leak detection is quoted for your roof, because the method depends on the roof. For a price for your roof, ring 07833 053749 or email us.
Read more
Should I look at the roof myself first?
Fresh stains on ceilings or walls after rain are worth noting. Take a photo and write down when you saw it, which helps when we look at the roof.
During heavy rain, look at the gutters from the ground or a window. Overflowing water can be a sign of a blockage or a gutter that has dropped.
Roof by roof
Green and ballasted roofs
Roofs with planting or ballast hide the membrane. Some methods can work through these layers but it depends on the layers.
Inverted and paved roofs
On inverted roofs, insulation sits above the membrane and that changes how testing works.
Flat roofs in Deacon's Hill
About 4.7 miles south-west lies Headstone Manor, a reminder of how long the area around Deacon's Hill has been built on. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and the council can say whether a home is in a conservation area. In this part of the South East, older roofs are mostly slate or clay tile and many newer ones concrete tile. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops.
Take an older house close to Church of St Nicholas: later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear. For site and facilities teams at buildings such as Summerswood Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Deacon's Hill is about 1 mile south of Borehamwood, in Hertfordshire. Deacon's Hill gets the same service as everywhere else we work: a careful inspection, photos and a written report. Deacon's Hill is one of the places in Hertfordshire we cover for electronic leak detection. Our London page covers surveys nearby.
Electronic leak detection in WD6 are booked the same way as anywhere else. We offer electronic leak detection to properties on Grange Road, Vale Avenue and Barnet Lane. Deacon's Hill is on the A411, so it is easy for us to get to. If you’re just outside Deacon's Hill, we cover Edgware Bury (1 mile south), Elstree (1 mile west), Borehamwood (1 mile north), Broadfields Estate (1 mile south) and Rowley Green (2 miles north-east). Larger places within reach include Watford (5 miles west), Hemel Hempstead (11 miles north-west), St Albans (8 miles north), Welwyn Garden City (11 miles north), Harpenden (12 miles north) and Hoddesdon (14 miles north-east).
Local landmarks in Deacon's Hill
Typical jobs here are in homes near Yavneh College, Edgwarebury Park and The Crown pub and the streets around them. The nearest railway station is Elstree & Borehamwood station, roughly 0.6 miles north. Nearby you’ll also find Broadwalk Centre (2.2 miles south) and Royal National Orthopaedic Hospital (1.4 miles south-west). Not far away are Darland's Lake and Edgware Way Grassland.
Deacon's Hill: your questions answered
Is Deacon's Hill in the area you cover?
Yes, Deacon's Hill is within the area we cover. We survey roofs across London and South East England. You can phone 07833 053749 or send us an email with the address and some details.
Do you cover smaller places like Deacon's Hill?
Yes, we do. We work right across London and the South East, and smaller places are part of that. The journey is planned ahead, so it is useful to know about access.
What insurance do you have?
Our cover is professional indemnity plus public liability, and we can provide details if a managing agent needs them.
Do you use low-voltage or high-voltage testing?
It depends on the membrane and the build-up. Low-voltage testing typically needs a wet surface, while high-voltage testing needs a dry, exposed membrane.
Is it the same as a RICS Level 2 or Level 3 survey?
No. We look at the roof, not the whole building, so it’s not a RICS Level 2 or Level 3 survey. It can sit alongside a RICS survey if you want both.
Does electronic leak detection work on all membranes?
ELD doesn’t suit every roof. Some membranes conduct electricity, and some build-ups lack a suitable layer below. If your roof will not work, we will say so at the start.
Can you test a green or ballasted roof?
In some cases. The layers on top and the build-up below decide it and parts may need to be lifted. We talk this through first.
For landlords and managing agents
For a freeholder or residents’ company, a roof report is a sound basis for a maintenance plan, with the most urgent items set out first.
Where a roof is shared: access has to be agreed with whoever owns or manages the building. Let us know about it as you book and we’ll plan the visit with that in mind.
What we’re asked to look at in Deacon's Hill
Holes in a membrane frequently come from feet, tools or debris. Some are too small to see but water still finds them.
Things that often lead to a survey include:
- Leaking laps in the waterproofing
- Damage from equipment installers
- Holes around roof penetrations
- New roofs to check before paving or planting
If you let a flat or house near Elstree & Borehamwood station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Choosing a roof surveyor
- Is there a chance to talk the report through?
- Whether they hold professional indemnity and public liability insurance
- How long the report takes to arrive
- What the report includes, and whether it has photographs