Hertfordshire · London and the South East
Flat roof survey in Tewin Wood, Hertfordshire
Surveys of flat roofs on homes, extensions and commercial buildings across Tewin Wood, using drones and thermal imaging where it applies. Call or email for a price.
- Signs of deflection in the roof deck
- Damaged trims at the roof edge
- Blistering in felt or asphalt
About our flat roof survey in Tewin Wood
A flat roof leak often travels before it shows on the ceiling. It can run along the deck from a split, an open lap or a failed upstand some distance away. That’s why we check every detail across the roof, not only the area above the stain, and photograph anything that could let water in. A roofer can then start from a clear picture of the problem. If you’ve noticed a sagging deck under the covering and failed seals around rooflight kerbs, a survey will tell you what’s going on, on single-ply membranes, mastic asphalt and felt flat roofs alike.
Flat roofs on exposed homes in small places like Tewin Wood take more wind and rain, which is hard on edges, upstands and joins in the covering. Felt roofs, which often last around 15–20 years, normally show it first. Rubber and GRP last longer, though trims and joints still need a look. On an exposed roof, the edges tend to go first.
What you get is a clear record of the flat roof on the day we saw it. That makes it useful now and a handy reference later, such as when you want to compare after future work.
- Location
- Tewin Wood (AL6)
- Wider area
- Hertfordshire
- Price
- From £150 inc. VAT
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
What happens on the day
The visit has one job: to look at the flat roof as closely as is safe and record what we find. Everything we note and photograph goes into the written report. The visit normally takes between one and two hours at a typical home, and about three to four hours for a commercial roof. Somewhere like Tewin Wood needs a little journey planning: let us know about lanes, gates and parking. The roof is looked at from the ground, from windows, from the loft where there’s safe access and from the roof where it is safe.
- We start with the address and, on larger roofs, the roof area and access.
- We check the rooms or spaces under the roof for staining where there’s access.
- The roof is inspected from every safe viewpoint, without walking on fragile surfaces.
- Each defect is photographed and its likely cause noted.
- The report explains the condition and recommends what to do first.
Before we arrive
- Move anything stored under the loft hatch
- Keep pets in another room
- Tell us where we can park nearby
How to book
When you are ready to go ahead, ring 07833 053749 or use the contact form. From there it is a case of choosing a package, agreeing the price and fixing a day, weekday or weekend.
Advice
Why act early in Tewin Wood
Standing water on a flat roof rarely sorts itself out. Most frequently it means blocked outlets, poor falls or a deck that is dipping, and each wet season wears the covering further. Finding the cause now keeps more options open. For an older or listed building in a place like Tewin Wood, repairs may need matching materials and consent, so a defect found early gives time to plan the work properly.
Every price we give includes VAT, and the report is not charged as an extra. Prices start from £150, including VAT. Where your roof sits in the range depends on its size, height and access.
Why book us in Tewin Wood
- Prices that include VAT
- More than 20 years surveying roofs
- A sub-250g drone, flown with a CAA Flyer ID and Operator ID
- Surveys seven days a week
See how roof surveys are priced and what we found on two real jobs.
Signs you need a flat roof survey in Tewin Wood
Many flat roof problems start at the details rather than the main surface. Upstands, edge trims, outlets and the kerbs around rooflights move and weather differently from the rest of the roof. Where they weren’t finished well, they tend to fail before anything else.
It is worth booking a survey if you’ve seen:
- Blisters and bubbles in the covering
- Damaged trims at the roof edge
- Outlets that hold water back
- Dips that suggest the deck is deflecting
For site and facilities teams at buildings like Ridgeway Academy, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Questions to ask before booking
- Whether VAT is added on top
- What insurance they carry
- What happens after the report arrives
- Whether any drone flown is registered with the CAA
Tips from our surveys
Most of what helps is simple and safe from the ground. Our suggestions:
- Ask contractors to protect the roof if they work on it
- Note the date and type of any roof work
- Ask whoever fits equipment on the roof to make good the covering
- Book a survey every few years
Once we have been, the findings are written up with photos. It covers the type of covering, its condition and each defect, with our recommendations. Turnaround is within 48 hours for a Basic Survey, 24 to 48 hours for a Standard Survey and the same day for a Premium Survey.
Keep foot traffic on a flat roof to a minimum. Where someone does need access, ask them to use boards or a protected route, and remind them never to step on rooflights or fragile sheets.
Landlords, agents and block managers in Tewin Wood
Businesses and commercial landlords can book us too, from shops and offices to industrial units. Bigger roofs take more time, so they’re priced to suit.
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out with the most urgent first where relevant.
Common questions in Tewin Wood
Is my home in Tewin Wood listed or in a conservation area?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Is Tewin Wood within the area you cover?
Yes, Tewin Wood is on our map. Villages and rural addresses get the same survey as a town house.
Do you go up onto the roof?
It depends on what’s safe: the roof itself where that is safe, plus windows, vantage points and the rooms below. Fragile rooflights and fragile sheets are never walked on.
Will this cover the whole house?
No. We look closely at the flat roof rather than the whole building. It works alongside a RICS home survey, not instead of one, and it isn’t a structural engineer’s report.
How do I book a survey in Tewin Wood?
Simply ring 07833 053749 or send us an email. We’ll ask a few questions, confirm the price and agree a date.
How much is a survey?
Prices start from £150, including VAT. What you pay for your roof depends on its size, height, access and the package.
What does ponding on a flat roof mean?
Water that lies on a flat roof for days is a sign that something needs attention. It could be the outlets, the falls or a deflecting deck. The survey looks at each and records the likely cause.
What we cannot see
Some things cannot be seen without opening up the roof, so a survey has limits:
- Asbestos testing, which needs a specialist asbestos surveyor
- Parts of the roof that are not safe to walk on or view
- What’s under the membrane without opening it up
If in doubt, phone 07833 053749 or email us and we’ll suggest the right survey before you book. What a survey covers and does not.
What we look at
- EPDM rubber
- Upstands and outlets
- Felt flat roofs
- Single-ply membranes
- Mastic asphalt
- GRP fibreglass
What a flat roof survey looks like in Tewin Wood
Digswell House, about 2.1 miles south-west, is one of the historic houses in the wider area around Tewin Wood. If yours is one of the older homes, expect a mix of original materials and later repairs on the roof. Across the South East, older homes tend to have slate or clay tiles, and many later ones concrete tiles, with flat-roofed extensions, dormers and garages common everywhere. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops.
If you own a rental within reach of Welwyn North station, flat roofs on let property tend to be checked only when they fail, which is the costly way round. If you look after a shop, office or commercial unit, for instance near Howard Centre, the flat roofs over shops and commercial units are worth checking before a leak, not after.
Tewin Wood is about 3 miles north-east of Welwyn Garden City, in Hertfordshire. Bookings from Tewin Wood are handled just like any other: a call or an email, a price, then a date. Tewin Wood is one of the towns and villages in Hertfordshire we cover for flat roof surveys. For surveys nearby, see our London page.
Surveys in AL6 work the same way as everywhere else we cover. We cover properties on Cowpers Way, Desborough Drive and Firs Walk. Other places close to Tewin Wood include Burnham Green (1 mile north-west), Bull's Green (1 mile north), Harmer Green (1 mile west), Tewin (1 mile south) and Datchworth (1 mile north). Further out, we also cover Watford (15 miles south-west), Hemel Hempstead (14 miles south-west), Stevenage (5 miles north), St Albans (9 miles south-west), Bishop's Stortford (14 miles east) and Welwyn Garden City (3 miles south-west).
Near you in Tewin Wood
Typical jobs here are in homes near Belmont pub. Tewin Wood’s nearest station is Welwyn North station, roughly 1.4 miles west. Well-known places in the area include Howard Centre (2.8 miles south-west) and Hertford Castle (4.3 miles south-east). Open spaces near Tewin Wood include Tewin Orchard and Hopkyns Wood.