Hertfordshire · London and the South East
Electronic Leak Detection in Marshalswick
Find out what’s going on with the flat roof membrane before you spend money on it. We carry out electronic leak detection in Marshalswick, with photographs and a clear written report.
- Leaks through a covered membrane
- Damp inside with no sign on the roof
- A flat roof leak that cannot be traced
What happens on the day
On the day, we begin with a quick chat about the roof and anything that’s worrying you. After that, we check everything we can see safely, from ground level, from windows, in the roof space and by drone where it applies. Most surveys take as long as needed for the size of the roof and how it’s built, which we’ll explain when we quote. In a smaller place like Marshalswick, parking is seldom the issue; lanes, gates and long drives are worth mentioning. On bungalows and lower roofs, much can be seen from ground level, with the loft showing the underside, while taller roofs may need other vantage points or the drone where applicable.
- We start with what you know about the roof and the leak.
- We check whether the membrane and build-up suit ELD.
- The test method is chosen to suit the roof.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Getting ready for the survey
- If you’re buying, let the agent know when we are coming
- Check pets are kept safely away
- Gather any invoices or paperwork from past roof work
Arrange a survey
We survey roofs on any day of the week. To arrange a day that suits you, ring 07833 053749 or email us.
Related advice
About our electronic leak detection in Marshalswick
A leak in a flat roof often shows up a long way from where the water gets in. So the stain inside rarely sits under the hole. Electronic leak detection tests the membrane itself and locates the breach. We test and report, and the repair is for your roofer. On a suitable roof, it takes the guesswork out of finding the hole. We then send you the results in a written report. We survey roof terraces and balconies, commercial flat roofs and single-ply roofs, and people most frequently book us about damp inside with no sign on the roof and patched roofs that still leak.
Flat roofs in smaller places like Marshalswick can be more exposed, particularly where nothing shelters them, where wind can catch loose edges and trims. Felt and bitumen also age in strong sun. The signs are splits, blisters and edges coming away. Standing water that lingers for days after rain is another sign worth watching for.
You can share the report with anyone who needs it: your solicitor, the seller, your insurer, a roofer or the building’s managing agent.
- Location
- Marshalswick (AL4, AL1, AL3)
- Region
- Hertfordshire
- Cost
- Quoted for your roof
- Reports
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Different roofs, different checks
Inverted and paved roofs
If the build-up rules out ELD, we will say so.
Green and ballasted roofs
Parts of the covering may have to come up. We discuss this before quoting.
Why it’s worth a survey now in Marshalswick
Leaks left running can wet the insulation and deck. Finding the breach sooner limits that. Tradespeople may need to travel further to a smaller place like Marshalswick, so it is useful to plan roof work rather than call someone out in a hurry. A survey gives you that notice.
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 your roof before you book.
Why us?
- Visits on any day of the week
- More than 20 years surveying roofs
- Independent findings on the roof’s condition
- Covered by professional indemnity and public liability insurance
Read what a roof survey costs and our case studies.
Electronic leak detection in Marshalswick: local notes
Historic houses such as Batchwood Hall, about 2 miles west, show how far back building in the area around Marshalswick goes. If you own one of the older houses, 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. In this part of the South East, older roofs are mostly slate or clay tile and many newer ones concrete tile, and flat-roofed additions turn up almost everywhere. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
If yours is one of the older homes in the streets near Saint Mary's, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear. If you own a rental within reach of St Albans station, a flat roof over a rented flat is easy to forget until the tenant reports a leak. If you look after a shop, office or commercial unit, for instance near The Maltings, the flat roofs over shops and commercial units are worth checking before a leak, not after.
Marshalswick is about 1 mile north-east of St Albans, in Hertfordshire. Marshalswick is one of many places we visit across Hertfordshire. Our Hertfordshire coverage includes Marshalswick and the places around it. We also survey roofs in London.
Electronic leak detection in AL4, AL1 and AL3 work the same way as everywhere else we cover. Local streets include Milvus Road, Jersey Lane and Sandpit Lane, all of which we cover. We also cover the places around Marshalswick: Sandridge (1 mile north), Bernards Heath (1 mile west), St Albans (1 mile south-west), Childwick Green (2 miles north-west) and Sopwell (2 miles south-west). Within a short drive, we also cover Watford (8 miles south-west), Hemel Hempstead (7 miles west), Stevenage (11 miles north-east), Welwyn Garden City (5 miles north-east), Harpenden (4 miles north-west) and Hitchin (13 miles north).
What’s near Marshalswick
In Marshalswick, that means homes and buildings near The Baton pub, Sandringham School and Clarence Park, among other places. The closest station to Marshalswick is St Albans station, roughly 1.3 miles south-west of the centre. Well-known places in the area include St Albans Musical Museum (0.8 miles south-west) and The Maltings (1.6 miles south-west). The countryside around Marshalswick includes The Wick Local Nature Reserve and Verulamium Lake.
Your questions about electronic leak detection in Marshalswick
Is my home in Marshalswick listed or in a conservation area?
We can’t confirm that for you, but Historic England’s list and your council can. Both listing and conservation areas can limit changes of roofing material, and councils can also use Article 4 directions.
Do you carry out roof surveys in Marshalswick?
Yes. We survey roofs across London and the South East, and Marshalswick is part of that. You can call 07833 053749 or use the contact form with the address and a few details, and we’ll talk through which survey suits.
What if it rains on the day?
It can, depending on the survey. Drone flights need calm, dry weather, and thermal imaging works best with a dry roof, little wind and a sunny day beforehand. If the conditions are not right, we’ll talk to you about another date.
Will you fly a drone over my roof?
Where it helps and it’s safe, yes. Flights depend on the weather on the day and airspace rules. We are a CAA-registered drone operator.
Do you look in the roof space?
If it’s needed and safe to reach, yes. We look for staining, damp, daylight and signs of movement, as far as the space allows.
How experienced are you?
More than 5,000 surveys over 20+ years.
Is it the same as a RICS Level 2 or Level 3 survey?
No. We are experienced roof surveyors, and our survey covers the roof rather than the whole building. If you need a full building survey, you’ll need a RICS survey as well.
Before and after the survey
Over many surveys, some simple habits stand out as worth the effort:
- Do not keep patching the same spot
- Record dates and spots where water appears
- Make sure trades protect the waterproofing
- Don’t leave water getting in
After your roofer repairs the breaches, a retest can confirm them, where the roof still suits the method.
Ask trades working on the roof to protect the membrane when fitting equipment. Check the roof after they’ve finished.
What this survey can’t tell you
Every survey has limits, and it’s better to know them up front. Keep these in mind:
- Leaks from plumbing or windows
- Repairing the breaches (that’s for your roofer)
- Some conductive membranes
Not sure which survey suits your roof? You can call 07833 053749 or drop us an email and we’ll tell you before booking. The full list of what we check.
Roof types and parts we check
- Green roofs
- Flat roof membranes
- Single-ply roofs
- Roof terraces and balconies
- Commercial flat roofs
- Liquid-applied waterproofing
Towns and villages near Marshalswick
Other services in Marshalswick
What you can safely check yourself
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way, and a fall can be serious. That part is for a survey.
Watch the gutters in a downpour, from a window or the ground. Overflowing water can be a sign of a blockage or a gutter that has dropped.