Hertfordshire · London and the South East
Thermal imaging roof survey in Marshalswick, Hertfordshire
Thermal imaging to find moisture and heat loss patterns in a roof for Marshalswick and the rest of Hertfordshire. Surveys run on any day of the week.
- Wet areas near outlets and upstands
- Possible trapped moisture under a flat roof covering
- Missing or slipped insulation
Different roofs, different checks
Felt and asphalt flat roofs
Felt and asphalt sit tight to the layers below, which often helps the camera pick up differences. We confirm any patterns with moisture readings.
Single-ply and EPDM roofs
Single-ply PVC, TPO and EPDM roofs are frequently laid over insulation boards. Wet boards can show as temperature differences on the images.
Thermal roof surveys for homes and businesses in Marshalswick
Thermal imaging works best in the right conditions. A sunny day before the survey, a dry roof surface and little wind all help. Rain, a strong wind or heavy cloud can make the images less clear. We’ll discuss the weather with you when booking, and our report notes the conditions and how they affected what we saw. If you’ve noticed damp around chimneys and parapets and areas of a flat roof that may hold water, we can find out what’s behind it, on commercial roofs, pitched roof slopes and flat roofs alike.
Older cottages and houses around Marshalswick 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.
Report times depend on the survey you book: the Basic Survey within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey on the same day.
- Location
- Marshalswick (AL4, AL1, AL3)
- Region
- Hertfordshire
- Price
- From £400 inc. VAT
- Report
- Emailed report with photos and recommendations
- When we survey
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
Also near Marshalswick
Also in Marshalswick
How it works
Once we’ve finished looking, we write up our findings as a report with photos, sent to you by email. On timing, it typically takes about one to two hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. With a bit of garden around a house, as there often is around Marshalswick, the roof can be viewed from several angles. Let us know if any side is fenced off or hard to reach. The loft, where there’s safe access, completes the picture.
- We start by discussing the roof, any signs of damp and how the weather may affect the images.
- The roof is inspected visually from safe viewpoints.
- We take thermal images of the roof to pick up temperature patterns.
- Any patterns of interest are checked with moisture readings where we can reach them.
- We write up the thermal images alongside ordinary photos and recommendations.
Before we arrive
- Let us know about any leaks, stains or damp patches you know of
- Mention any parking restrictions on your street
- For flats, make sure roof access has been agreed
How to book
To get a price for thermal roof surveys in Marshalswick, ring 07833 053749 or send us an email. Some details about the property and the roof help us price the survey accurately.
Advice
What happens if roof problems are left?
Once insulation under a membrane is wet, it tends to stay wet. Over time, it insulates less well and can harm the deck. Finding them early can mean a smaller job. In a smaller place like Marshalswick, wherever a roof is exposed, a loose ridge or flashing does not stay loose for long. Each storm lifts it a little further, and water follows.
The cost of a survey depends on the roof: how big it is, how high it is, the number of separate roofs and how safely it can be seen. Prices start from £400, including VAT.
What you get with us
- Prices that include VAT
- 98% customer satisfaction
- Photographs and a written report every time
- 20+ years’ experience
Read what a roof survey costs or two real surveys.
Can I check my roof myself?
Fresh stains on ceilings or walls after rain are worth noting. Photograph them and note the date, as it helps a surveyor trace the cause.
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. Don’t go up yourself.
What this survey can’t tell you
No survey can tell you everything, and it’s better to know them up front. Bear these in mind:
- Reliable images in rain, strong wind or on a wet roof surface
- Insulation values or heat loss calculations
- Seeing water directly, as the camera shows temperature, not moisture
Not sure which survey suits your roof? You can phone 07833 053749 or drop us an email and we will tell you. The full list of what we check.
What this survey covers
- Insulated roof spaces
- Ceilings below the roof
- Pitched roof slopes
- Flat roofs
- Commercial roofs
- Loft conversions
Thermal roof surveys in Marshalswick: local notes
Batchwood Hall, about 2 miles west, is one of the historic houses in the wider area around Marshalswick. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and the council can say whether a home is in a conservation area. Where the drone is part of the survey, we check the Drone Safety Map for restrictions before flying.
If you run a business near The Maltings, thermal images can show trapped moisture across a wide commercial roof. Anyone responsible for a site like St John Fisher Roman Catholic Primary School will know that big roofs are where photos from the air and thermal images show the most at once. Take an older house close to Saint Mary's: thin or patchy insulation under an old roof often shows up clearly on a thermal image.
Marshalswick is about 1 mile north-east of St Albans, in Hertfordshire. We survey roofs in Marshalswick as part of our work across London and the South East. Our Hertfordshire coverage includes Marshalswick. For surveys nearby, see our London page.
Thermal roof surveys in AL4, AL1 and AL3 work the same way as everywhere else we cover. If you need a thermal roof survey at a property on Milvus Road, Jersey Lane and Sandpit Lane or a nearby road, we can survey it. If you’re just outside Marshalswick, we cover Sandridge (1 mile north), Bernards Heath (1 mile west), St Albans (1 mile south-west), Childwick Green (2 miles north-west) and Sopwell (2 miles south-west). Larger places within reach include Watford (8 miles south-west), Hemel Hempstead (7 miles west), Stevenage (11 miles north-east), Welwyn Garden City (5 miles north-east), Harpenden (4 miles north-west) and Hitchin (13 miles north).
Around Marshalswick
Locally, jobs take us to homes and businesses close to The Baton pub, Sandringham School and Clarence Park. For rail, the closest station is St Albans station, about 1.3 miles south-west of the centre. A little further out are St Albans Musical Museum (0.8 miles south-west) and The Maltings (1.6 miles south-west). Green spaces nearby include The Wick Local Nature Reserve and Verulamium Lake.
What a survey costs
Our packages start from £150, inc. VAT. The price for your roof depends on:
- Commercial roofs and larger buildings
- The use of thermal imaging or a drone
- Features like valleys, chimneys, dormers and parapets
- The height of the building and how the roof can safely be seen
Prices start from £400, including VAT. Basic starts from £150, Standard from £250 and Premium from £400, VAT included, and we can help you choose.
What to tell us when you get in touch
There’s no need for technical words. Just tell us:
- The reason for the survey, such as buying, a leak or storm damage
- What kind of property and roof it is
- Anything about access we should know
- Pictures of the roof from a safe spot, if you have them
We confirm the price for your roof before you book, so you know where you stand. Our price is from £400, including VAT. To book, call 07833 053749 or send us an email.
FAQs for Marshalswick
Do you carry out roof surveys in Marshalswick?
Yes, Marshalswick is one of the places we work. The survey and report are the same in Marshalswick as anywhere else, and visits run on weekdays and weekends.
How do I find out if my home in Marshalswick is listed?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you are planning to re-roof in a different material.
Is thermal imaging included in your surveys?
Thermal imaging is included in our Premium Survey, from £400. That also includes a full inspection, a drone inspection where it applies, structural analysis and a same-day report.
Can you survey at the weekend?
Visits run seven days a week in the daytime, which suits people who work during the week. Just say which days work for you.
Do you climb onto every roof?
Only when it’s safe. Safe viewpoints, the loft space and a drone where applicable cover most of what’s needed, and anything out of sight is recorded in the report.
Does thermal imaging work on slate and tile roofs?
It can help, but the results are frequently less clear than on a flat roof. The air space under slates and tiles can hide patterns, so we also look from the loft where it’s safe.
How long is the visit?
That depends on the size and shape of the roof; most visits take about 1–2 hours at most homes, and longer for a large or complex roof. The report is sent afterwards by email.