Hertfordshire · London and the South East
Electronic Leak Detection in Todd's Green
Electronic leak detection in Todd's Green, with over 20 years’ experience behind it. You get a clear report with photos.
- Leaks through a covered membrane
- New roofs to check before paving or planting
- Breaches around outlets and penetrations
How electronic leak detection works in Todd's Green
Electronic testing locates holes in the waterproofing, not every cause of water getting in. Water coming through walls, copings, rooflights or plumbing won’t show on the test. We’ll tell you if we think the leak is coming from somewhere else. The test shows breaches in the membrane, not water coming through masonry or around frames. Our report keeps that distinction clear. You will also know what to check next. Typical surveys look at leaks showing away from the breach and breaches around outlets and penetrations, on single-ply roofs, flat roof membranes and liquid-applied waterproofing.
Somewhere as small as Todd's Green, flat roofs tend to be on extensions, garages and converted outbuildings. They need the same care as any town roof: the covering, the edges, the upstands and where water drains away. We simply plan the journey and access in advance. If there are outbuildings or garages with flat roofs, mention them as you book.
After the visit, you get a written report with photographs, emailed to you. It sets out the condition of the flat roof membrane, any defects and our written recommendations.
- Where
- Todd's Green (SG1)
- Region
- Hertfordshire
- Prices
- Quoted for your roof
- Reports
- A written report with photos, by email
- Appointments
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
What you can safely check yourself
A DIY look is useful, but it isn’t a survey. From the ground, valleys, flashings and the backs of chimneys are frequently out of sight.
During heavy rain, look at the gutters from ground level or a window. Overflowing water can point to a blockage or a sagging run.
Places near Todd's Green
Also in Todd's Green
Todd's Green questions
Will you come out to Todd's Green?
Yes. Todd's Green is within the area we cover, which takes in towns, villages and rural addresses. We survey roofs across London and South East England. Let us know about access, parking and anything unusual about getting there as you book.
Do you cover Todd's Green?
Yes, Todd's Green is one of the places we work. The survey and report are the same in Todd's Green as anywhere else.
Is it the same as a RICS Level 2 or Level 3 survey?
No. This is a survey of the roof only, and it is not a RICS Level 2 or Level 3 survey. It can sit alongside a RICS survey if you want both.
Can you survey at the weekend?
We carry out surveys seven days a week. To arrange a date, ring 07833 053749 or drop us an email.
Do you test for asbestos?
No. We do not sample or test for asbestos. 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.
How many surveys have you done?
We have completed more than 5,000 surveys, over more than 20 years, with 98% customer satisfaction.
How soon will I get the report?
It depends on the package: the Basic Survey report arrives within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey the same day. Reports are sent by email.
Landlords, agents and block managers in Todd's Green
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on, photos included.
If you own several properties, surveys can be booked for more than one address. To arrange surveys for several addresses, phone 07833 053749 or send us an email.
What happens on the day
We photograph the roof as we go, so you can see in the report what we found and where. We take close-ups from wherever is safe. Most surveys take more time on a big roof than a small one, and the build-up of the roof makes a difference too. Older roofs in small places like Todd's Green can have low, tight loft spaces, so it is useful to know whether there is a loft hatch and how easy it is to reach. Only areas that can be reached safely are inspected.
- First, we confirm which roof areas are included.
- The surface is prepared for the chosen method.
- We work across the roof with the test equipment.
- Each breach found is located and recorded.
- You receive the results to pass to your roofer.
Before we arrive
- Let us know about parking near the property
- Jot down any questions you want answered
- Leave a clear route to the loft
Arrange a survey
Surveys can be booked for weekdays, Saturdays or Sundays. To find a date that works for you, ring 07833 053749 or send us an email.
Read more
What affects the price in Todd's Green
We confirm the exact price before you book. This is what makes a difference:
- The type of building, from a house to a block or an office
- The height of the building and how the roof can safely be seen
- Chimneys, valleys, parapets and other details
- If the survey needs thermal imaging or a drone
The cost of a survey depends on the roof: its size, its height, how many sections it has and how it can be reached and seen safely. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Getting in touch
If you can, have these to hand when you get in touch:
- Pictures of the roof from a safe spot, if you have them
- What made you get in touch
- The kind of building and roof involved
- Anything about access we should know
Photos help, if you have them. Pictures from ground level or a window are fine, and please don’t climb up for a closer look. To get started, phone 07833 053749 or email us.
Before and after the survey
Over many surveys, some simple habits stand out as worth the effort:
- Share any drawings of the roof
- Clear flat roof outlets regularly
- Don’t keep patching the same spot
- Ask contractors to protect the membrane
The report records each breach location with photos. Pass it to your roofer to repair the breach points.
Limit foot traffic on flat roofs. Many breaches come from foot traffic.
Do you need electronic leak detection in Todd's Green?
New membranes can have defects from installation. Testing before the roof is covered or handed over helps find them.
Here are some of the things we see often:
- Gaps at membrane joints
- A flat roof leak that cannot be traced
- Breaches hidden under paving or planting
- Leaks showing away from the breach
If you let a flat or house near Stevenage station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Questions to ask before you book
- Will they check the loft as well as the outside?
- How long they’ve been surveying roofs
- Is VAT included in the price?
- Which viewpoints they use to see the roof
Electronic leak detection around Todd's Green
Older houses in the South East frequently have slate or clay tile roofs, while many later estates have concrete tiles, with flat-roofed extensions, dormers and garages common everywhere. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops. About 3.5 miles south lies Knebworth House, a reminder of how long the area around Todd's Green has been built on. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first.
For site and facilities teams at buildings such as The John Henry Newman School, schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. For an older house near a landmark like Church of St Mary the Virgin, flat-roofed rear additions and dormers added over the years are worth checking.
Todd's Green is about 2 miles north-west of Stevenage, in Hertfordshire. Houses, flats, blocks and commercial buildings in Todd's Green can all book electronic leak detection, with a written report and photographs every time. Todd's Green is one of the towns and villages in Hertfordshire where we work for electronic leak detection. For surveys nearby, see our Milton Keynes page.
Surveys in SG1 work the same way as everywhere else we cover. Nearby, we also carry out electronic leak detection in Lower Titmore Green (1 mile west), Titmore Green (1 mile west), Little Wymondley (1 mile north-west), Graveley (1 mile north-east) and Great Wymondley (1 mile north). We also work in nearby towns like Hemel Hempstead (15 miles south-west), St Albans (13 miles south), Welwyn Garden City (9 miles south), Harpenden (9 miles south-west), Hitchin (3 miles north-west) and Hoddesdon (15 miles south-east).
What’s near Todd's Green
We work in homes and buildings around Hermit of Redcoats pub and Graveley Primary School, among other places. The nearest railway station is Stevenage station, about 1.7 miles south-east. Nearby you’ll also find Lister Hospital (0.6 miles east) and Stevenage Museum (1.9 miles south-east). The countryside around Todd's Green includes Purwell Ninesprings.