Hertfordshire · London and the South East
Gustard Wood Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes for Gustard Wood, from an experienced roof surveyor. Every survey comes with a written report and photos.
- Leaking laps in the waterproofing
- Leaks that return after repairs
- Waterproofing to test before it is covered
Why it’s worth a survey now in Gustard Wood
Some flat roof leaks come from walls or details. Testing shows whether the membrane is breached, so other causes can be checked. Around Gustard Wood, older homes often have old roof timbers, and water through a failed covering can rot timber if it’s left.
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You will know the price for your survey before you book.
Why us?
- Drone flown under a CAA Flyer ID and Operator ID
- Surveys seven days a week
- Over 20 years’ experience
- More than 5,000 surveys completed
Read how roof surveys are priced and two real surveys.
Electronic leak detection in Gustard Wood: what you get
ELD suits many waterproofing membranes on flat roofs over offices, units, blocks of flats and homes. It can be used to trace an existing leak or to test a new membrane before it is covered. Each roof is quoted on its size and build-up. Testing can be carried out on weekdays, Saturdays or Sundays, depending on the weather. Just ask about your roof. Common reasons to book are a flat roof leak that can’t be traced and leaking laps in the waterproofing, on liquid-applied waterproofing, roof terraces and balconies and commercial flat roofs.
Somewhere as small as Gustard Wood, flat roofs tend to be on extensions, garages and converted outbuildings. The checks are the same as anywhere: outlets, upstands, edges and the covering itself. We simply plan the journey and access ahead of time. If there are outbuildings or garages with flat roofs, mention them as you book.
We write the report in plain English, so it makes sense without any roofing background. Each point is backed by a photo where possible, with the urgent items made clear.
- Location
- Gustard Wood (AL4)
- Region
- Hertfordshire
- Cost
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- Survey days
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Your questions about electronic leak detection in Gustard Wood
Is Gustard Wood within the area you cover?
Yes, smaller places are covered as well as towns. We work right across London and the South East. Let us know about access, parking and anything unusual about getting there as you book.
Do you cover Gustard Wood?
Yes, Gustard Wood is one of the places we work. The survey and report are the same in Gustard Wood as anywhere else, and visits run on weekdays and weekends.
Do you take photos of the roof?
Yes, plenty. Pictures sit next to the findings they show, so you can see what we mean.
Will you go up on the roof?
Only when it is safe. Safety comes first, and fragile or steep roofs cannot always be walked on. Safe viewpoints, the loft and a drone where it applies let us see the rest.
Can you find leaks on a covered flat roof?
On some roofs, yes. What sits on the membrane affects the method so we check the roof first.
How many surveys have you done?
We’ve completed more than 5,000 surveys, over more than 20 years, and 98% of customers are satisfied.
Will you fly a drone over my roof?
Where it helps and the rules allow, yes. We hold a CAA Flyer ID and Operator ID and fly a drone under 250g, and every flight depends on the airspace and the weather.
For landlords and managing agents
Freeholders and residents’ companies use a roof report to plan and budget, with the most urgent items set out first.
Surveys can also be booked by buyers’ agents acting for a client. The report is emailed, so it can go straight to your client.
How the survey works
We will ask a few questions first, such as when any problem began and what work has been done before. The inspection then takes a time that depends on the membrane area and the build-up, and we’ll give you a guide when quoting. In a small place like Gustard Wood, access is normally the main thing to plan. Let us know about outbuildings, past repairs and any leaks you’ve noticed. Visits can be on weekdays, Saturdays or Sundays.
- You tell us about the roof and where water is showing.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- You get a report with photos of each breach.
Preparing for the visit
- Have keys ready for side gates, garages or roof access doors
- If it isn’t your property yet, arrange access through the agent
- Leave a clear route to the loft
Booking a survey
To book a survey, phone 07833 053749 or use the contact form and tell us the address and what’s prompted the survey. You will know the price before anything is booked.
Read more
Tips that help
Here are a few things we’d tell any owner, before and after a survey:
- Find the breach before more patching
- Record dates and spots where water appears
- Get leaks traced quickly
- Limit access to the roof
The report records each breach location with photos. Pass it to your roofer to repair the breach points.
Keep outlets and gutters on flat roofs clear. Water that sits on the roof finds breaches faster.
Nearby places to Gustard Wood
What else we do in Gustard Wood
When to book a survey in Gustard Wood
Joints and laps in a membrane can fail over time. A gap that’s hard to see can let water in long before anyone notices.
Signs worth acting on include:
- Stains far from any visible defect
- Gaps at membrane joints
- New membranes needing a check before handover
- Leaks that return after repairs
Landlords with a home close to Harpenden station may find that flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
What to check before booking
- Their insurance cover
- What exactly goes into their report
- Their drone registration, if they fly one
- What happens after the report arrives
Electronic leak detection around Gustard Wood
Across the South East, older homes tend to have slate or clay tiles, and many later ones concrete tiles. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. Historic houses like Shaw's Corner, about 1.2 miles north-east, show how far back building in the area around Gustard Wood goes. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and a listed home or one in a conservation area may need consent for changes of material.
For site and facilities teams at buildings such as St Helen's Church of England Primary School, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. If you own one of the older houses in the streets near St Peter, the flat roofs on later extensions tend to wear out long before the main roof.
Gustard Wood is about 3 miles east of Harpenden, in Hertfordshire. Whether the building in Gustard Wood is a house, a flat or a commercial unit, we can survey the roof on a weekday or at the weekend. Our Hertfordshire coverage includes Gustard Wood and the places around it. For surveys nearby, see our London page.
Every address in AL4 is within our area for electronic leak detection. We also cover Wheathampstead (1 mile south), Ayot St Lawrence (1 mile north-east), Kimpton (2 miles north), Ayot St Peter (2 miles east) and Codicote Bottom (2 miles north-east). Within a short drive, we also cover Watford (12 miles south), Hemel Hempstead (9 miles south-west), Stevenage (7 miles north-east), St Albans (5 miles south), Welwyn Garden City (5 miles south-east) and Harpenden (3 miles west).
Around Gustard Wood
Around Gustard Wood, our work takes us to homes and buildings near Sir John Lawes School and The Old Plough Public House. For rail, the closest station is Harpenden station, roughly 2.7 miles west. Other landmarks nearby include St Albans City Hospital (5.1 miles south-west) and Harpenden Museum (2.9 miles west). For a walk, there’s Wheathampstead Local Nature Reserve.
What we cannot see
We only report whatever is safely visible on the day, so there are some things a survey cannot cover:
- Sections we cannot safely access
- Leaks from plumbing or windows
- Some conductive membranes
If you are not sure which survey you need, phone 07833 053749 or email us and we’ll give you a straight answer before booking. What our survey covers.
What we look at
- Liquid-applied waterproofing
- Green roofs
- Roof terraces and balconies
- Commercial flat roofs
- Flat roof membranes
- Single-ply roofs