Hertfordshire · London and the South East
Electronic leak detection in Newnham, Hertfordshire
An experienced roof surveyor for electronic leak detection in Newnham. Over 5,000 surveys and 20+ years behind us.
- Holes around roof penetrations
- Leaks that return after repairs
- Leaks showing away from the breach
Electronic leak detection for homes and businesses in Newnham
Water can travel under a flat roof membrane before it shows inside. That makes leaks hard to trace by eye. 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. We survey flat roof membranes, liquid-applied waterproofing and green roofs, and the problems we are asked to look at most are leaks under green or ballasted roofs and a flat roof leak that can’t be traced.
Somewhere as small as Newnham, flat roofs tend to be on extensions, garages and converted outbuildings. The checks are the same as anywhere: the covering, the edges, the upstands and where water drains away. The journey and access are planned beforehand. Garages and outbuildings are easy to forget, so mention any you want included as you book.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent.
- Where
- Newnham (SG7)
- Wider area
- Hertfordshire
- Cost
- Quoted for your roof
- Report
- A written report with photos, by email
- Appointments
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Different roofs, different checks
Single-ply membranes
Single-ply membranes are common on commercial and newer roofs. Laps and fixings are where holes often appear.
Liquid-applied waterproofing
Testing a liquid-applied roof depends on what’s beneath the coating.
How the survey works
We work from the outside in: outside views come first, then the loft space if there’s safe access. All told, expect longer on a large roof than a small one, and the build-up of the roof makes a difference too. Older rural homes like those around Newnham can have a main roof, lower lean-to roofs and outbuildings all joined together. Each part is looked at from wherever it can be seen safely, and anything we cannot see is noted.
- 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 photos shows where each breach is.
How to prepare
- Make sure the loft hatch can be reached
- Leave side gates unlocked
- Buyers: confirm access with the estate agent or seller
Getting a price
A quick phone call is usually the easiest start: ring 07833 053749 or use the contact form, and we’ll ask about the building and what you need. The price is agreed before a date is set.
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Do you need electronic leak detection in Newnham?
Roofs covered with paving, ballast or planting hide the membrane. ELD can work on some covered roofs, depending on the build-up.
People normally book a survey after spotting one of these:
- Leaks showing away from the breach
- Leaks under green or ballasted roofs
- Leaking laps in the waterproofing
- Leaks through a flat roof with no obvious cause
The streets around a church such as Church of St Vincent are often among the oldest in a place, and if your home is one of the older ones nearby, the joins between later flat roofs and the old walls are where problems normally start.
What to check before booking
- Which viewpoints they use to see the roof
- Which limits apply to the survey
- What insurance they carry
- Their report turnaround times
Why get it checked now?
Not every leak is in the membrane. ELD helps rule the membrane in or out so attention can go to the right place. For older village homes like those around Newnham, the right replacement materials are not always easy to find quickly. Spotting a problem early leaves room to find them.
All our prices include VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the price for the job before booking.
Why book with us
- Over 5,000 surveys carried out
- Thermal imaging and drone inspection where they help
- 20+ years’ experience
- 98% of clients satisfied
See our cost guide or our case studies.
Rented homes, blocks and businesses
Buyers’ agents can book surveys on behalf of their clients. Reports are emailed, so they’re easy to pass on, photos included.
Letting agents often book on a landlord’s behalf. Access is agreed with the tenant beforehand.
Electronic leak detection in Newnham: local notes
About 1.4 miles north lies Hinxworth Place, a reminder of how long the area around Newnham has been built on. If your house is among the older ones, expect a mix of original materials and later repairs on the roof, and any change of roofing material on a listed home needs checking with the council first. Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles, with flat-roofed extensions, dormers and garages common everywhere. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises.
If you own a rental within reach of Baldock station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies. For site and facilities teams at buildings such as The Knights Templar School, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Newnham is about 3 miles north-east of Letchworth, in Hertfordshire. Whether the building in Newnham is a house, a flat or a commercial unit, the roof can be surveyed on a weekday or at the weekend. Our Hertfordshire coverage includes Newnham and the places around it. Our Milton Keynes page covers surveys nearby.
Surveys in SG7 are booked the same way as anywhere else. That includes homes and businesses on Ashwell Road and Caldecote Road. Other places close to Newnham include Caldecote (1 mile north-west), Bygrave (2 miles south-east), Ashwell End (2 miles north), Bury End (2 miles north) and Ashwell (2 miles north-east). Larger places within reach include Stevenage (8 miles south), Welwyn Garden City (15 miles south), Hitchin (6 miles south-west), Letchworth (4 miles south-west), Letchworth Garden City (4 miles south-west) and Benslow (6 miles south-west).
Local landmarks in Newnham
Newnham’s nearest station is Baldock station, about 2 miles south. A little further out are Bygrave House (1.5 miles south-east) and Fairfield Hospital (3 miles south-west). The countryside around Newnham includes Arlesey Old Moat and Glebe Meadows.
DIY checks: what’s safe
After strong wind, take a look from the pavement or garden: pieces of tile or slate on the ground, a gap in the ridge or a lifted flashing are all worth noting. Leave anything above ground level to a survey.
If you have a loft with safe access, take a look inside. Use a torch and stay on the joists or boards, and look for staining, damp timber or daylight coming through.
Newnham: your questions answered
Is my home in Newnham listed or in a conservation area?
We cannot confirm that for you, but Historic England’s list and your council can. Both listing and conservation areas can limit changes of roofing material.
Do you cover smaller places like Newnham?
Yes. Newnham is within the area we cover, which takes in towns, villages and rural addresses. We work right across London and the South East. Just mention lanes, gates or anything else about the route when you book.
How do I arrange electronic leak detection in Newnham?
The quickest way is to call 07833 053749 or send us an email. Tell us the address and a little about the roof, and we will take it from there. We survey seven days a week.
Will you photograph what you find?
Yes. Photos are taken throughout the survey, and the report uses them to show each finding.
How soon will I get the report?
That depends on the survey you book: the Basic Survey report arrives within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey the same day. The report is emailed to you.
Is it a structural engineer’s report?
No. Our survey is not a structural engineer’s report. If we see signs that need an engineer’s opinion, we’ll recommend one.
What happens after the survey?
The report comes by email, and what you do next is up to you: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.