Hertfordshire · London and the South East
Welham Green Roof Leak Investigation
Tracing where water is getting into your roof for Welham Green, from an experienced roof surveyor. Every survey comes with a written report and photos.
- Water dripping from rafters or underlay
- Damp walls below an overflowing gutter
- Leaks at a dormer or roof window
How it works
It is useful to start with what’s prompted the survey: a purchase, a leak, a storm, new work or simply peace of mind. It helps us focus on what matters most to you. The visit usually takes between one and two hours for most homes, though a hard-to-trace leak can take longer. Some parts of a survey depend on the weather, so a visit to Welham Green is booked with the forecast in mind: drone flights and thermal imaging need the right conditions, while a look from ground level and the loft can go ahead in most weather.
- We help you choose the package that suits the leak.
- A visit is booked for a weekday, Saturday or Sunday.
- We inspect inside and out, starting from the stain.
- Moisture detection and thermal imaging are used where your package includes them and they help.
- You get photos, the likely cause and clear recommendations.
Preparing for the visit
- Leave side gates unlocked
- If the roof is shared, arrange access with whoever manages the building
- Gather any invoices or paperwork from past roof work
Book a survey
Prices start from £150, including VAT. The exact figure depends on the roof and the package, so phone 07833 053749 or email us with the details.
Related advice
Roof leak investigation in Welham Green: what you get
Water is good at hiding where it gets in. Water often travels along timbers or underlay before it finds a way down, so a ceiling stain is rarely directly below the cause. Our leak investigation traces it back. A repair aimed only at the stain can miss the cause entirely. Finding the route first lets the repair go where it’s needed. We survey chimney stacks, valleys and parapet gutters and rooflights and dormers, and the problems we are asked to look at most are staining around the chimney inside and drips in the loft during heavy rain.
Older cottages and houses around Welham Green may have roofs with little or no underlay. Without a sound underlay, any gap in the coverings lets water straight through. Whether it is long-term wear or recent damage makes a difference to what happens next. In the loft, damp battens or wet insulation are often the first clues.
The report is written in plain words, so it makes sense without any roofing background. Photographs show what each point refers to, with the urgent items made clear.
- Place
- Welham Green (AL9, AL10)
- Region
- Hertfordshire
- Cost
- From £150 inc. VAT
- Reports
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Places near Welham Green
What else we do in Welham Green
Do you need a roof leak investigation in Welham Green?
Blocked gutters can look like a roof leak. Parapet and box gutters are the worst for this, since a blocked outlet sends water over the lining and into the building.
A survey makes sense if you’ve noticed:
- Damp on a chimney breast
- Water coming in around a roof light or dormer
- Drips from nail tips in a cold loft
- Brown rings on upstairs ceilings
If you look after a building such as St Mary's Church of England Primary School, a leak through a large roof is often found some distance from where the water shows inside.
Before booking anyone
- Their report turnaround times
- What’s outside the scope of the survey
- How they plan to inspect the roof safely
- Whether VAT is added on top
Questions from Welham Green
Will you come out to Welham Green?
We do. Villages and rural addresses get the same survey as a town house.
How do I find out if my home in Welham Green is listed?
For listing, use Historic England’s list; for conservation areas, ask the council. The answer matters most when a change of material is on the cards.
Why does not the damp patch line up with the hole?
Because water travels. It can follow a timber or the underlay a long way first, so the stain may be some distance from where it gets in. That is why we trace the route rather than patching above the stain.
Can you find a leak when it isn’t raining?
Often, yes. Stains, tide marks, damp timbers and moisture readings normally point the way. Intermittent leaks can be harder, so photos and notes from when it leaks help a lot.
Will you definitely find the leak?
We cannot promise it. Some leaks hide well, especially those that need wind-driven rain. If we cannot be sure, the report ranks the possible sources.
Can you survey at the weekend?
We survey on any day from Monday to Sunday, during the day, which suits people who work during the week. Just say which days work for you.
Can thermal imaging help find my roof leak?
It can, when the conditions are right. The best results come after a sunny day, on a dry roof with little wind. Damp areas can hold heat differently from dry ones. We always check what it shows with moisture readings.
Why get it checked now?
Leaks tend to get worse, not better. Each storm can open a gap a little more. An investigation now gives you time to plan the work. Homes in smaller places like Welham Green can face more weather, so a loose ridge or verge soon lets rain in. Wind gets under it and lifts more.
The Premium Survey includes thermal imaging and drone inspection where it applies, from £400 including VAT. We can help you choose the package that fits what you’d like to know.
Why book with us
- Insured for professional indemnity and public liability
- Over 5,000 surveys carried out
- An independent look at the roof
- We hold a CAA Flyer ID and Operator ID
Before and after the survey
A survey works best with a little help from you, before and after. Tips:
- Leave roof access to professionals
- Keep water away from lights and sockets
- Move stored items away from the hatch
- Take dated photos of the leak
We email the report to you. It explains the likely entry point, the route the water takes and our recommendations. Basic reports come within 48 hours, Standard within 24 to 48 hours and Premium the same day.
Look at the roof from ground level after strong winds. Slipped slates, lifted ridge tiles and debris on the ground are signs to act on. Small faults dealt with quickly rarely become leaks.
What you can safely check yourself
You can learn a lot from ground level. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Please do not climb up for a closer look.
It helps to keep a record: dates of leaks, photos from ground level and any work done on the roof. Send it with your enquiry, as it helps us focus the survey.
Surveys for landlords and agents in Welham Green
Buyers’ agents can book surveys on behalf of their clients. Reports are emailed, so they’re easy to pass on.
With a portfolio of properties, you can book surveys for several addresses. To arrange surveys for several addresses, phone 07833 053749 or drop us an email.
Roof leak investigations around Welham Green
Hatfield, which Welham Green is part of, is one of England’s post-war new towns. Homes from the post-war decades are common in the new towns, many with low-pitched roofs in concrete tiles and flat-roofed garages or porches. Low pitches let wind-driven rain reach further under the tiles, and flat-roofed garages and porches are common leak points. About 1.8 miles north lies Hatfield House, a reminder of how long the area around Welham Green has been built on. Older homes in the wider area often have features worth a closer look, like lead valleys, tall stacks and roofs that have been patched over the years, and any change of roofing material on a listed home needs checking with the council first.
For landlords with property near Welham Green station, a clear finding on where water gets in helps you brief a roofer straight away. Homes near green spaces like Brookmans Park can get more leaves in their gutters in autumn, and an overflowing gutter soon means a wet wall.
Welham Green is about 2 miles south of Hatfield, in Hertfordshire. Wherever you are in Welham Green, we can carry out roof leak investigations at your property, on a weekday, Saturday or Sunday. We cover towns and villages across Hertfordshire, large and small. There’s also a page for London.
Here we cover the AL9 and AL10 postcode area for roof leak investigations. We offer roof leak investigations to properties on Station Road, Old Farmhouse Mews and Vincenzo Close and the roads around them. Close by, we survey roofs in North Mymms (1 mile south), Colney Heath (1 mile west), Hatfield (2 miles north), Sleapshyde (2 miles west) and Smallford (3 miles north-west). Larger places within reach include Watford (9 miles south-west), Hemel Hempstead (10 miles west), Stevenage (12 miles north), St Albans (5 miles west), Welwyn Garden City (4 miles north) and Harpenden (8 miles north-west).
What’s near Welham Green
In Welham Green, that means homes and buildings near Brookmans Park, The Hope and Anchor Public House and Chancellor's School, among other places. Welham Green has its own railway station: Welham Green station. A little further out are Queen Elizabeth II Hospital (3.5 miles north) and The Bunker at Hatfield Police Station (2.3 miles north). Not far away are Gobions Wood.