Hertfordshire · London and the South East
Chimney survey in Welwyn, Hertfordshire
Find out what’s going on with the chimney stack before you decide what to do next. We carry out chimney surveys in Welwyn, with photos and a clear written report.
- Signs that a stack is leaning
- Pots or cowls that look unsafe
- Lifted or split lead flashings
Chimney surveys for homes and businesses in Welwyn
On terraced and semi-detached houses, a chimney stack is often shared with next door. We check what can be seen safely and what the owner gives us access to. Where a problem seems to involve a neighbour’s side, the report records it, so you can talk to them. Everything is written up with photos and our recommendations. If you’ve noticed disused chimneys trapping moisture and pots or cowls that look unsafe, a survey will tell you what’s going on, on chimney pots and cowls, flaunching and brick chimney stacks alike.
Trees around homes in smaller places like Welwyn drop leaves, twigs and moss onto roofs and into gutters. Blocked gutters overflow and soak the walls below. A report spots that kind of slow problem before it becomes damp inside. Plants growing from a gutter or moss on the tiles are signs worth noting from the ground.
It isn’t only a list of defects. For each finding, it explains what it is, why it matters and what we’d recommend.
- Location
- Welwyn (AL6)
- Wider area
- Hertfordshire
- Cost
- From £150 inc. VAT
- Report
- Emailed report with photos and recommendations
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Welwyn: your questions answered
Is my home in Welwyn listed or in a conservation area?
The council and Historic England’s list are the places to check. Either can affect what roof work is allowed, so it’s worth checking before planning any.
Can a landlord with a rental near Welwyn North station book a roof survey?
Yes. We survey roofs for landlords, letting agents and managing agents as well as owners. You can call 07833 053749 or use the contact form with the address and what you need.
Do you survey roofs on blocks of flats?
Yes, once access has been agreed. Roofs over flats are frequently shared, so we need permission from the freeholder or managing agent. We inspect only the parts we are allowed to reach.
What insurance do you have?
Every survey is covered by professional indemnity and public liability insurance, and we can provide details if a managing agent needs them.
Does someone need to be in?
Not always. If we only need the outside, we can agree that beforehand, but anything inside needs someone there to give access.
Does the weather affect the survey?
It depends on the weather and the survey. In strong wind or heavy rain, a drone can’t fly and access may not be safe, so we’d move the date with you.
Does this replace a RICS home survey?
No. It is a specialist roof survey, not a RICS Level 2 or Level 3 building survey. It focuses on the roof, so it sits alongside a building survey rather than replacing it.
What we can’t see
It is a careful look at the chimney stack, not the whole story. Its limits include:
- Flue inspections or sweeping
- Areas we can’t view from safe positions
- Conditions inside walls
Not sure which survey suits your roof? You can call 07833 053749 or use the contact form and we will tell you before booking. What our survey covers.
Roofs we survey in Welwyn
- Lead flashings
- Flaunching
- Chimney breasts
- Chimney pots and cowls
- Brick chimney stacks
- Shared and party-wall stacks
For landlords and managing agents
Buyers’ agents can book surveys on behalf of their clients. Reports are emailed, so they’re easy to pass on.
Landlords and letting agents in Welwyn book surveys as well as householders. A report with photos gives you a clear record of the chimney stack, useful for planning maintenance.
What happens on the day
Expect us to ask a few questions before we start, such as when any problem began and what work has been done before. Then the inspection itself takes between one and two hours on an ordinary house; commercial roofs usually need 3–4 hours. A visit to a smaller place like Welwyn is no different on the day: we look from the ground, from windows, from the loft and from the roof where it is safe. Point out any stains, cracks or loose pieces you’ve spotted.
- You tell us whether any stacks are shared, unused or leaning.
- We check the roof around each stack, including the flashings.
- We look at the flaunching and pots on every stack.
- Any lean, spalling or worn pointing is recorded.
- You receive a written report setting out what needs attention first.
How to prepare
- Let us know about parking before the day
- Make sure the loft hatch can be reached
- Let us know about any leaks, stains or damp patches you know of
How to book
To book a survey, ring 07833 053749 or email us with the address and what you’d like to know about the roof. We’ll confirm the price before you book.
Related advice
Should I look at the roof myself first?
A DIY look is useful, but it isn’t a survey. From the ground, valleys, flashings and the backs of chimneys are often out of sight.
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way. That is where a survey comes in, using safe viewpoints and a drone where applicable.
What affects the cost of chimney surveys
Our packages start from £150, inc. VAT. The price for your roof depends on:
- Any need for thermal images or a drone flight
- The height of the building and how the roof can safely be seen
- Features like valleys, chimneys, dormers and parapets
- Whether you choose the Basic, Standard or Premium Survey
Thermal imaging and drone inspection (where it applies) come with the Premium Survey, which starts from £400, inc. VAT. We can help you choose the package that fits what you’d like to know.
What we need to know
When you call or email, these details help:
- The kind of building and roof involved
- When you need the report by
- Your postcode, so we can check access and travel
- Where any leaks, stains or damp patches show inside
Prices start from £150, including VAT. What you pay depends on the roof’s size, access and the package, so phone 07833 053749 or use the contact form with the details.
Leave it or get it looked at?
A loose pot or brick can fall from height. Finding them early means they can be dealt with before they come down by a roofer. With lower homes, common in places like Welwyn, there is little between a roof defect and the ceiling, so a small leak can mark a ceiling within a few storms. Catching the cause first saves redecorating as well.
One thing that affects the price is the package: Basic from £150, Standard from £250 or Premium from £400, all inc. VAT. The roof’s size, height and access matter as well.
Why us?
- 98% of customers satisfied
- More than 20 years surveying roofs
- CAA-registered drone operator (Flyer ID and Operator ID)
- An independent look at the roof
Take a look at what a roof survey costs or two real surveys.
Also in Welwyn
Chimney surveys in Welwyn: local notes
Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. Whichever you have, the details that tend to fail before the covering itself get the closest look. Digswell House, about 0.9 miles south-east, is one of the historic houses in the wider area around Welwyn. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead.
For an older house near a landmark such as Parish Church of St Mary, corroded nails, tired lead and weathered chimney pointing are the things to watch on older roofs. If you own a rental within reach of Welwyn North station, knowing the condition of the roof, chimneys and gutters helps you plan work rather than react to complaints. Take a building like Monk's Walk School: large buildings have long gutter runs and big roofs that need checking like any other.
Welwyn is about 2 miles north-west of Welwyn Garden City, in Hertfordshire. We survey roofs in Welwyn and the rest of Hertfordshire, as part of our work across London and the South East. Welwyn is one of the places in Hertfordshire where we work. There is also a page for London.
Here we cover the AL6 postcode area for chimney surveys. If you need a chimney survey at a property on High Street, London Road and Mimram Place or anywhere close by, we can help. Other places close to Welwyn include Monkswood (1 mile south-east), Ayot St Peter (1 mile south-west), Ayot Green (1 mile south-west), Pottersheath (2 miles north) and Codicote (2 miles north-west). We also work in nearby towns such as Watford (14 miles south-west), Hemel Hempstead (12 miles south-west), Stevenage (6 miles north), St Albans (7 miles south-west), Harpenden (6 miles west) and Hitchin (9 miles north).
Local landmarks in Welwyn
In Welwyn, that means homes and buildings near Stable Door pub, Danesbury Park and Homerswood Primary and Nursery School. Welwyn’s nearest station is Welwyn North station, about 1.1 miles south-east. Well-known places in the area include Queen Elizabeth II Hospital (3.5 miles south) and Datchworth Museum (2.7 miles north-east). The countryside around Welwyn includes Mardley Heath.