Hertfordshire · London and the South East
Chimney Survey in Tewin
Wondering about the chimney stack at a property in Tewin? We carry out chimney surveys in Tewin and across Hertfordshire.
- Loose, cracked or missing pots
- Gaps in the mortar around the pots
- Mortar washing out of the joints
Chimney surveys in Tewin: local notes
Older houses in the South East frequently have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. On roofs like these, good slates or tiles can outlast the nails, battens, lead and mortar around them. With Digswell House about 2.1 miles west, Tewin sits in an area with a long building history. On older houses around here, roofs often 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.
Landlords with a home close to Welwyn North station may find that the gap between tenancies is a good time to have the roof looked at. For businesses in and around places like Howard Centre, a written record of the roof’s condition helps you plan maintenance rather than react to leaks.
Tewin is about 2 miles north-east of Welwyn Garden City, in Hertfordshire. We visit Tewin as part of our work across Hertfordshire, for homes and businesses alike. We cover towns and villages across Hertfordshire, large and small. For surveys nearby, see our London page.
Here we cover the AL6 postcode area for chimney surveys. That includes homes and businesses on Upper Green Road, Godfries Close and Harwood Close. We also cover Tewin Wood (1 mile north), Burnham Green (1 mile north-west), Harmer Green (1 mile north-west), Haldens (1 mile west) and Bramfield (1 mile east). We also work in nearby towns such as Watford (15 miles south-west), Hemel Hempstead (14 miles west), Stevenage (6 miles north), St Albans (9 miles south-west), Bishop's Stortford (14 miles east) and Harpenden (8 miles west).
What’s near Tewin
Locally, jobs take us to homes and businesses close to Rose And Crown Public House and Panshanger Park. The nearest railway station is Welwyn North station, roughly 1.6 miles west. Nearby you’ll also find Howard Centre (2.4 miles south-west) and Queen Elizabeth II Hospital (2.8 miles south-west). Open spaces near Tewin include Tewin Orchard and Hopkyns Wood.
How a chimney survey works in Tewin
Our chimney survey covers the stack and the details that keep water out around it: the pots and cowls, the flaunching on top, the pointing, the brickwork and the flashings where it meets the roof. Inside, we check chimney breasts and the stack in the loft where it is safe to reach. The findings come in a written report with photos and recommendations. We survey single stacks on houses and groups of stacks on bigger buildings. We survey lead flashings, flaunching and chimney breasts, and the problems we’re asked to look at most are damp patches on chimney breasts and unused flues sealed without airflow.
Somewhere as small as Tewin, homes are frequently older cottages and farmhouses, with outbuildings and some newer houses. Older roofs may be clay tile, slate, stone or thatch, often with chimneys that have stood a long time. Each needs checking in its own way, and thatch is a specialist material we report on as far as it can be seen. On older roofs, it is usually the chimneys and lead flashings that need work first.
It isn’t only a list of defects. For each finding, it explains what it is, why it matters and what we’d recommend, so you can decide what to do next.
- Where
- Tewin (AL6)
- Region
- Hertfordshire
- Price
- From £150 inc. VAT
- Your report
- A written report with photos, by email
- When we survey
- Weekdays, Saturdays and Sundays
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
When to book a survey in Tewin
Flaunching is the mortar bed that holds the pots and throws water off the top. Cracked flaunching lets water in, and each winter makes it worse. Loose pots can follow.
Here are some of the things we see often:
- Lifted or split lead flashings
- Eroded joints in the brickwork
- Redundant stacks capped without ventilation
- Damaged chimney pots and cowls
If yours is one of the older homes in the streets near Church of St Peter, its roof may have old fixings, lead flashings and chimneys that need a closer look.
Choosing a roof surveyor
- Is there a chance to talk the report through?
- How long the report takes to arrive
- What insurance they carry
- What the survey won’t cover
How it works
We’ll ask a few questions first, such as when any problem began and what work has been done before. Then the inspection itself takes roughly 1–2 hours at a house, as part of a look at the roof around the stack. Somewhere like Tewin needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. On the day, we inspect everything that’s safely in view, inside and out.
- You let us know how many stacks there are and any damp or problems you’ve noticed.
- Each chimney is viewed from wherever it can safely be seen.
- We check and photograph the pots, cowls, flaunching, pointing and flashings.
- We check the chimney breasts and the stack in the loft space where we can reach them.
- You get a written report with photos and our recommendations.
How to prepare
- Tell us where we can park nearby
- Gather any invoices or paperwork from past roof work
- Agree roof access with the managing agent if it is shared
How to book
If you’re buying, it’s useful to book soon after your offer is accepted, so there’s time to use the report before exchange. Otherwise, simply ring 07833 053749 or email us whenever suits you.
Advice
What happens if roof problems are left?
If you are buying, find out about the stacks before you exchange. After that, any work is yours to arrange and pay for. Our report gives you facts to raise with the seller or agent. Older and listed buildings around Tewin may need consent and matching materials for repairs, so leaving a defect until it is urgent leaves less time to plan.
Prices start from £150, including VAT. What you pay depends on the size and height of the roof, how it can safely be seen and which survey you book.
Why book with us
- An independent look at the roof
- Professional indemnity and public liability insurance
- Package prices that include VAT
- CAA-registered drone operator (Flyer ID and Operator ID)
See how roof surveys are priced or what we found on two real jobs.
FAQs for Tewin
How do I find out if my home in Tewin 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.
Do you survey roofs for landlords with property near Welwyn North station?
Yes, landlords and agents book with us as well as owners. You can ring 07833 053749 or use the contact form with the address and some details.
Do you need to get into the loft?
Normally, if there is one and it can be reached safely. The loft space can show things the outside cannot, such as damp timbers, staining or daylight.
Is Tewin in your area?
Yes. Tewin is part of the area we cover, and the service is the same as everywhere else we work.
What do I do with the report?
The report comes by email, and you decide the next step: use it with a seller, an insurer, a roofer or a managing agent.
What’s in the survey report?
Written findings with photos, covering the condition of the chimney stack, the defects we found and what we recommend. Standard adds moisture detection and a structural check; Premium adds thermal imaging, drone inspection where applicable and structural analysis.
Our stack is shared. Can you still survey it?
Yes. Shared stacks are common on terraced and semi-detached houses. We survey what we can see safely, and note anything that seems to involve next door.
What we look for on each type of roof
Lead flashings
Lead flashings seal the joint between the stack and the roof. We check for lifting, splits and gaps in the joints.
Brick stacks
Brick stacks rely on sound pointing to keep water out. The survey looks for crumbling bricks and worn or missing mortar.
Rented homes, blocks and businesses
We survey roofs for landlords and letting agents as well as homeowners. A written report with photos gives you a clear record of the chimney stack, useful for planning maintenance.
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out in order of urgency where relevant, which helps with budgets and planning.
Checking the roof from ground level
You can learn a lot from the ground. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Never climb onto the roof to look.
What you can’t do safely is get up close. Roofs are fragile and slippery, and falls from height are serious. That part is for a survey, using safe viewpoints and a drone where applicable.