Hertfordshire · London and the South East
Chiswell Green Chimney Survey
A survey of chimney stacks, pots, flashings and flaunching for Chiswell Green and the rest of Hertfordshire. Surveys run seven days a week.
- Damp patches on chimney breasts
- A chimney out of line
- Pots or cowls that look unsafe
Chiswell Green questions
I let a flat near Park Street station. Can you check the roof?
Yes, landlords and letting agents book with us as well as owners. Just phone 07833 053749 or use the contact form and let us know about the building.
Will you come out to Chiswell Green?
Yes, Chiswell Green is on our map. A small place gets exactly the same survey as a big one, with the route planned beforehand.
Will you check the loft?
Normally, if there is one and it can be reached safely. From inside, the underside of the roof frequently shows damp, staining or daylight that can’t be seen from outside.
Can you give me structural calculations?
No. Our survey isn’t 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.
Should a redundant chimney be removed?
There is no single answer. The survey shows its condition and how it’s been capped. If you’re thinking of removing it, check with the council first in a conservation area or on a listed building.
Why is my chimney breast damp?
Typically it is water getting in from outside, or condensation in a sealed stack. We check the stack, the flashings and how unused flues are capped and records the likely cause.
Will you walk on the roof?
Only when it’s safe. Safe viewpoints, the roof space and a drone where applicable cover most of what’s needed.
How a chimney survey works in Chiswell Green
If a chimney looks out of line, it’s worth getting it checked. Stacks can lean when mortar on one side breaks down, often after years of flue gases and damp. We record the lean and the condition of the brickwork and pointing. If the stack looks like a structural issue, the report recommends a structural engineer. Common reasons to book are damp on a chimney breast inside and unused flues sealed without airflow, across shared and party-wall stacks, lead flashings and chimney breasts.
Around Chiswell Green, older cottages sit alongside bungalows and newer houses. Coverings range from slate and clay tiles on older homes to concrete tiles on many later ones. Chimneys, valleys and gutters on older homes often need the most attention, and the fixings under the coverings matter too. Nails and battens under older coverings often give out before the slates or tiles themselves.
Findings are set out part by part, from the main slopes down to the gutters and outlets, with a note and a photo for each point. It records what’s sound as well as what is not.
- Location
- Chiswell Green (AL2)
- Region
- Hertfordshire
- Cost
- From £150 inc. VAT
- Your report
- Emailed report with photos and recommendations
- When we survey
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
What a survey costs
Every roof is different, so prices are confirmed before booking. This is what makes a difference:
- Basic, Standard or Premium
- The type of building, from a house to a block or an office
- The height of the building and how the roof can safely be seen
- The number of roofs, including extensions and garages
Chimney survey starts from £150, including VAT. The final price depends on the size and height of the roof, access and which survey you book.
Booking your survey
Some details help us suggest the right survey and price. When you get in touch, it is useful to mention:
- Pictures from the garden or a window, if you have them
- Dates you are working to, such as exchange
- The property’s address and postcode
- Anything about access we should know
Photos help, if you have them. Take them safely from ground level or a window. To get started, phone 07833 053749 or send us an email.
Local roofs in Chiswell Green
Across the South East, older homes tend to have slate or clay tiles, and many later ones concrete tiles, and flat-roofed additions turn up almost everywhere. Whatever the covering, it’s often the fixings, flashings, valleys and gutters that give out first. The wider area around Chiswell Green has a long history of building, with High Elms Manor about 2.3 miles south-west. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead, and any change of roofing material on a listed home needs checking with the council first.
For site and facilities teams at buildings such as Killigrew Primary and Nursery School, its roofs, gutters and any chimneys need the same checks as a house’s, just on a bigger scale. For landlords with property near Park Street station, a dated record of the roof is useful when planning maintenance across a let. The streets around a church such as St. Stephen's Church are often among the oldest in a place, and if your house is among the older ones nearby, corroded nails, tired lead and weathered chimney pointing are the things to watch on older roofs.
Chiswell Green is about 2 miles south-west of St Albans, in Hertfordshire. We carry out chimney surveys for homeowners, landlords and businesses in Chiswell Green and the surrounding area. Chiswell Green is one of the places in Hertfordshire we cover. You can also see our page for London.
We cover every part of AL2 for chimney surveys and the streets around it. That includes homes and businesses on Watford Road, Rosedene End and Hammers Gate and the roads around them. Chiswell Green sits on or near the B4630, which makes travel easy. If you are just outside Chiswell Green, we cover How Wood (1 mile south-east), Park Street (1 mile east), St Stephens (1 mile north-east), Frogmore (1 mile south-east) and Sopwell (1 mile north-east). We also work in nearby towns such as Watford (5 miles south), Hemel Hempstead (5 miles west), Stevenage (15 miles north-east), Welwyn Garden City (9 miles north-east), Harpenden (6 miles north) and Hoddesdon (15 miles east).
Landmarks near Chiswell Green
Around Chiswell Green, our work takes us to homes and buildings near Three Hammers Public House, Verulamium Park and Marlborough Science Academy, among other places. The nearest railway station is Park Street station, roughly 0.8 miles east of the centre. A little further out are Hypocaust Museum (1.5 miles north) and Napsbury Hospital (2.1 miles east). Green spaces nearby include Verulamium Lake and Grebe House Wildlife Garden.
Places near Chiswell Green
Other services in Chiswell Green
How it works
We don’t take risks to get a closer look. We inspect what can be seen safely, and if part of the roof can’t be seen, the report says so. Most visits take an hour or two at a house, as part of a look at the roof around the stack. Homes around Chiswell Green often have gardens on more than one side, which gives us room to step back and see the roof. Let us know if any side is fenced off or hard to reach. Inside, the loft is checked where it can be reached safely.
- We start with the details: how many stacks, whether any are shared and any signs of damp.
- The stacks are looked at from the ground, from windows and from other safe vantage points.
- The pots, cowls, flaunching, pointing, brickwork and flashings are checked and photographed.
- We check the chimney breasts and the stack in the loft space where we can reach them.
- We send a written report with photos, the defects found and what we recommend.
Preparing for the visit
- Leave side gates unlocked
- Gather any invoices or paperwork from past roof work
- Point out any leaks or damp patches
Getting a price
You can call us seven days a week, including Saturdays and Sundays. For a price or to book, call 07833 053749 or drop us an email.
Read more
Can I check my roof myself?
Keep a simple record: dates of leaks, photos from the ground and any work done on the roof. Share it with us as you book and it will help the survey.
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.
When you need someone else
It is a careful look at the chimney stack, not the whole story. Its limits include:
- Checks on boilers, fires or their flues
- Whether the flue is safe to use
- A structural engineer’s assessment
If in doubt, call 07833 053749 or use the contact form and we’ll recommend the right survey. The full list of what we check.
What we look at
- Chimney breasts
- Shared and party-wall stacks
- Flaunching
- Chimney pots and cowls
- Lead flashings
- Brick chimney stacks
Why it’s worth a survey now in Chiswell Green
Most people never get a proper look at their chimney stacks. Defects tend to go unseen until there’s a stain. A survey gives you a clear picture before that happens. In an older home around Chiswell Green, water from a roof defect can get into timber and plaster, which is far harder to put right than the roof fault itself.
Our price is from £150, including VAT. Packages run from Basic at £150 through Standard at £250 to Premium at £400, including VAT.
Why book with us
- Weekday and weekend surveys
- A written report with photos
- Over 5,000 surveys carried out
- A sub-250g drone, flown with a CAA Flyer ID and Operator ID
Take a look at our cost guide or two real surveys.
Roof by roof
Rendered stacks
We can’t see the bricks behind render without it being opened up, so the report says what can and cannot be judged.
Lead flashings
Mortar fillets are sometimes used where lead would usually be. They tend to crack, so we look at them closely.