Hertfordshire · London and the South East
Thermal Roof Survey in Old Knebworth
Find out what’s going on with the roof before you decide what to do next. We carry out thermal roof surveys in Old Knebworth, with photos and a clear written report.
- Damp patches with no obvious cause
- Areas losing heat at the eaves and junctions
- Wet areas near outlets and upstands
The survey, step by step
We will ask a few questions first, about the roof’s history, any leaks and past repairs. The inspection then takes an hour or two at a house, including the thermal images, and around 3–4 hours for a commercial roof. Around Old Knebworth, older homes can have small or awkward roof spaces, so it’s useful to know whether there is a loft hatch and how easy it is to reach. Only areas that can be reached safely are inspected.
- We talk through the roof, any damp or leaks, and the weather expected on the day.
- The roof is inspected visually from safe viewpoints.
- A thermal camera records how the surface temperature varies across the roof.
- Areas that look unusual on the camera are checked with moisture readings where possible.
- You get a report with thermal images, photographs and our recommendations.
Before we arrive
- Show us where any leaks or stains appear
- Keep pets inside or away from the areas we are looking at
- If the roof is shared, arrange access with whoever manages the building
Booking a survey
Our phone lines are open seven days a week. To book or ask a question, phone 07833 053749 or email us.
Related advice
Thermal roof surveys for homes and businesses in Old Knebworth
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 will discuss the weather with you when booking, and the report explains how the conditions on the day affected the results. If you’re worried about thin or uneven insulation in the roof and damp around chimneys and parapets, a survey will tell you what’s going on.
Villages like Old Knebworth often stand in open country, where wind can be strong. Strong wind or heavy rain stops a small drone flying, and calm conditions also suit thermal imaging best. We plan the journey, access and timing around the weather. A change in the forecast can mean moving the visit to another day.
What you get is a clear record of the roof on the day we saw it. It is useful right away, and a good reference for later, for instance when you want to check whether anything has changed.
- Where
- Old Knebworth (SG3)
- Wider area
- Hertfordshire
- Price
- From £400 inc. VAT
- Reports
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
Different roofs, different checks
Pitched slate and tile roofs
Inside the loft space, thermal images can help with damp around stacks, valleys and roof windows. Findings are checked with moisture readings.
GRP fibreglass roofs
Water under a GRP roof can reach the timber deck. Thermal imaging can suggest where that may be happening.
Drones, thermal imaging and Old Knebworth roofs
Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. A drone or thermal camera adds most on the steep, tall and hidden parts of roofs like these. If your survey includes the drone, we check the Drone Safety Map for restrictions before flying.
The streets around a church such as Church of St Mary and St Thomas are frequently among the oldest in a place, and if your home is one of the older ones nearby, older roofs can be steep and hard to see from the street, which is where aerial photos and thermal images help. With Knebworth House about 0.2 miles north-west, the area around Old Knebworth has a long history. A drone or thermal survey doesn’t involve any work on the roof, which suits older buildings.
Old Knebworth is about 3 miles south-west of Stevenage, in Hertfordshire. Bookings from Old Knebworth are handled just like any other: get in touch, agree the price and pick a day. Our area takes in places right across Hertfordshire. For surveys nearby, see our London page.
We survey roofs across the SG3 postcode area for thermal roof surveys and the streets around it. You’ll find streets like Old Knebworth Lane and Park Lane. If you’re just outside Old Knebworth, we cover Nup End Green (1 mile south-west), Driver's End (1 mile south-west), Rableyheath (1 mile south), Pottersheath (1 mile south) and Langley (2 miles north-west). We also work in nearby towns like Hemel Hempstead (13 miles south-west), Stevenage (3 miles north-east), St Albans (10 miles south-west), Welwyn Garden City (5 miles south), Harpenden (7 miles south-west) and Hitchin (6 miles north-west).
What’s near Old Knebworth
Around Old Knebworth, our work takes us to homes and buildings near Knebworth Park and Robin Hood And Little John Public House. Old Knebworth’s nearest station is Knebworth station, roughly 1 mile east. Nearby you will also find Lister Hospital (3.7 miles north) and Stevenage Museum (2.2 miles north). For a walk, there is Mardley Heath.
Your questions about thermal roof surveys in Old Knebworth
Will you come out to Old Knebworth?
We do. A small place gets exactly the same survey as a big one, with the route planned beforehand.
Is Old Knebworth in the area you cover?
We do. Every survey there gets the same written report with photographs.
Do you test for asbestos?
No. We can flag materials that might contain asbestos, but confirming it is a job for a specialist asbestos surveyor. It may be present in buildings built or refurbished before 2000.
Do you carry professional indemnity insurance?
Every survey is covered by professional indemnity and public liability insurance.
Will I get photos?
Yes, plenty. Pictures sit next to the findings they show, which makes the report easy to follow.
What can thermal imaging tell me about my roof?
The camera records how the surface temperature varies. The patterns can suggest wet insulation, gaps in insulation or heat escaping. Findings are checked with moisture readings.
Is thermal imaging useful on pitched roofs?
It can be useful, though pitched roofs are normally harder to read. Slates and tiles over a ventilated space can mask what’s below, so we also look from the loft where it is safe.
What we can’t see
Every survey has limits, and we’d rather be clear about that before booking. Bear these in mind:
- Hidden layers that need to be opened up to check
- An energy rating for the building
- Confirming water without moisture readings
If you’re not sure which survey you need, call 07833 053749 or use the contact form and we’ll give you a straight answer. What our survey covers.
What we check
- Ceilings below the roof
- Commercial roofs
- Flat roofs
- Loft conversions
- Pitched roof slopes
- Insulated roof spaces
When to book a survey in Old Knebworth
Some owners book because the rooms under the roof feel cold. Gaps in loft insulation and poorly insulated roof areas can show up on the camera, particularly when there is a clear difference between inside and outside.
Most people get in touch after spotting one of these:
- Leaks that are hard to trace
- Heat escaping through the roof
- Gaps in loft insulation
- Stains that keep coming back
Anyone responsible for a site like Barnwell School will know that thermal images can show where wet insulation sits under a big flat roof.
Choosing a roof surveyor
- Whether the loft space is looked at, where there is one
- Whether they hold professional indemnity and public liability insurance
- Whether VAT is added on top
- Whether any drone flown is registered with the CAA
Prices for thermal roof surveys in Old Knebworth
To price your survey, we check:
- Extensions, dormers and garages with roofs of their own
- Height and safe access
- Roof area
- Basic, Standard or Premium
Thermal roof survey starts from £400, including VAT. Packages run from Basic at £150 through Standard at £250 to Premium at £400, with VAT included.
What to tell us when you get in touch
There’s no need for technical words. Just tell us:
- How the loft is reached, if there is one
- The reason for the survey, such as buying, a leak or storm damage
- Pictures of the roof from a safe spot, if you have them
- The type of building and roof, such as pitched or flat
Booking is simple: just ring 07833 053749 or drop us an email and give us a few details about the property and we’ll recommend the right survey. The price is agreed up front.
Places near Old Knebworth
More services for Old Knebworth
Leave it or get it looked at?
Thermal images can suggest the extent of wet areas without cutting into the roof. It helps when deciding whether to patch an area or replace the roof. Around Old Knebworth, older homes frequently have old roof timbers, and water through a failed covering can rot timber if it’s left.
Price depends partly on 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.
What you get with us
- An independent view of the roof
- Plain-English reports with photos
- More than 20 years surveying roofs
- Thermal imaging and drone inspection where they help