Hertfordshire · London and the South East
Welham Green Drone Roof Survey
We take a careful look at the roof at your property in Welham Green, with photographs and a written report.
- Ridge and hip pieces working loose
- Lifted or split lead flashings
- Blocked valleys and parapet gutters
Checking the roof from ground level
Keep a simple record: when leaks happen, ground-level photos and any past roof work. Share it with us when booking and it will help the survey.
Look up at the roof after a storm, from the ground: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
About our drone roof survey in Welham Green
The weather decides whether a drone can fly. Strong wind or heavy rain rules out a flight, because the drone has to stay safely under control. If the weather turns, we’ll agree another day. The forecast is checked ahead of the visit and again on the day. Light wind and dry weather give the clearest close-up photos. A short delay is better than a rushed flight. If you’re worried about ponding and splits on a high flat roof and eroded pointing on a chimney stack, a survey will tell you what’s going on.
Older cottages and houses around Welham Green may have little insulation, and some have extensions with their own roofs. A thermal image can show where heat is escaping or where moisture may be trapped, and drone photos show the roof surfaces themselves. Anything that looks like moisture is checked with a meter. Results depend on the weather, so the visit is planned around the forecast.
If any part of the roof couldn’t be seen safely, we say so in the report. You will know exactly what was inspected and what wasn’t.
- Location
- Welham Green (AL9, AL10)
- Region
- Hertfordshire
- Price
- From £400 inc. VAT
- Report
- Written, with photos, emailed to you
- Appointments
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
Questions from Welham Green
Will you come out to Welham Green?
Yes, we do. Our area covers London and the South East, and smaller places are part of that. Longer journeys are simply planned ahead of time.
Can you fly a drone over a roof in Welham Green?
It depends on the exact address and the weather on the day. Before any flight, we check the Drone Safety Map for airspace restrictions, including zones around airports and prisons. A small drone can’t fly safely in high wind or heavy rain.
Does the weather affect the survey?
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. We will rearrange with you if the weather is not right.
Are you insured?
Every survey is covered by professional indemnity and public liability insurance.
What happens next?
The report arrives by email, with photographs and clear recommendations. The Standard Survey includes a follow-up consultation, and the Premium Survey an in-person consultation.
Are you structural engineers?
No. Our survey is not a structural engineer’s report, and it doesn’t include calculations. If we see signs that need an engineer’s opinion, we’ll recommend one.
Do I have to be there for the survey?
It depends on what we need to see. Inside the building and in the loft, we need someone to let us in, while outside access can be discussed when you book.
Airspace, weather and Welham Green roofs
Before any flight, we check the Drone Safety Map for airspace restrictions. Our drone weighs under 250g, and we hold a CAA Flyer ID and Operator ID. Flights in the open category stay under 120 m (400 ft), with the drone kept in sight.
Take a building like St Mary's Church of England Primary School: thermal images can show where wet insulation sits under a big flat roof. With Hatfield House about 1.8 miles north, the area around Welham Green has a long history. Older roofs nearby can be steep and hard to see from the ground, and a survey from above or with a thermal imager doesn’t touch the roof itself.
Welham Green is about 2 miles south of Hatfield, in Hertfordshire. In Welham Green, as across Hertfordshire, every roof gets the same careful survey. Across Hertfordshire, we cover Welham Green. There is also a page for London.
Every address in AL9 and AL10 is within our area for drone roof surveys, from the main roads to the quietest streets. You’ll find streets such as Station Road, Old Farmhouse Mews and Vincenzo Close, all of which we cover. We also cover the places around Welham Green: North Mymms (1 mile south), Colney Heath (1 mile west), Hatfield (2 miles north), Sleapshyde (2 miles west) and Smallford (3 miles north-west). Further out, we also cover 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
We work in homes and buildings around Brookmans Park, The Hope and Anchor Public House and Chancellor's School. There is a railway station in Welham Green itself: Welham Green station. Other landmarks nearby include Queen Elizabeth II Hospital (3.5 miles north) and The Bunker at Hatfield Police Station (2.3 miles north). For a walk, there is Gobions Wood.
What happens if roof problems are left?
Leaving a slipped slate or a blocked valley can turn a small fault into a leak. Spotting them early keeps the work smaller, whatever height the roof is. 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.
What a survey costs comes down to the roof itself: how big it is, how high it is, the number of separate roofs and how it can be reached and seen safely. Our price is from £400, including VAT.
Why us?
- 20+ years’ experience
- Drone flown under a CAA Flyer ID and Operator ID
- Insured for professional indemnity and public liability
- 5,000+ roofs surveyed
Read how roof surveys are priced or what we found on two real jobs.
Common roof problems in Welham Green
Many roofs are never seen properly from ground level. You can’t see the back slope, the valleys or the chimney tops. Problems in those places often go unseen until they leak.
Problems we come across often include:
- Wind damage high on the roof
- Tired mortar and pots at the top of a stack
- Moss and weeds taking hold up top
- Slipped or missing slates on a high roof
The streets around a church such as Church of St Mary the Virgin are frequently among the oldest in a place, and if your house is among the older ones nearby, tall stacks and steep slopes are easier to judge with close-up aerial photos than from the pavement.
Choosing a roof surveyor
- Whether the loft is part of the inspection
- Whether VAT is added on top
- What experience they bring
- Do they have a CAA Flyer ID and Operator ID for drone work?
Tips from our surveys
A survey works best with a little help from you, before and after. Some tips:
- Check the loft can be reached
- Let us know about any leaks or concerns
- Allow for a change of day in poor weather
- Tell us the exact address when you book
If you need work done, roofers can work from the photos. The photos show the location and extent of every problem.
Do not block the vents at the eaves. Condensation in the loft can damage timbers and insulation, and it’s something only an inside check will show. Check insulation doesn’t block the airflow.
How the survey works
We check the roof from outside and, where it’s relevant and there’s safe access, from inside the loft space too. Inside, we look for staining, damp, gaps and signs of movement, as far as the space allows. All in, the survey typically takes an hour or two for a house; commercial roofs usually need 3–4 hours. For a survey in Welham Green, we agree the time, the access and parking before the day. Weekday and weekend visits are both possible. Tell us about any garages, outbuildings or extensions you want included.
- We start by checking the airspace and any restrictions at your address.
- We arrange any permission that’s needed before we fly.
- Before the flight, we check the conditions and the take-off spot.
- The sub-250g drone takes close-up photos of the roof, kept in sight throughout.
- We email a written report with the photos and our recommendations.
Getting ready for the survey
- Dig out any old roof reports or invoices
- If you’re buying, let the agent know when we are coming
- Clear the way to the loft hatch
Arrange a survey
We survey roofs on any day of the week. To arrange a day that suits you, ring 07833 053749 or send us an email.
Read more
Landlords, agents and block managers in Welham Green
Landlords and agents in Welham Green book surveys as well as homeowners. The report gives you a dated record of the roof, with photographs, useful for planning maintenance.
Businesses and commercial landlords can book us too. Larger roofs take longer, and they’re priced for the size.