Kent · London and the South East
Knockholt Pound Thermal Roof Survey
Thermal imaging to find moisture and heat loss patterns in a roof in Knockholt Pound. We’ve completed more than 5,000 surveys across London and the South East.
- Wet areas near outlets and upstands
- Patches of heat loss across the roof
- Cold areas below the roof
Surveys for landlords and agents in Knockholt Pound
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out by urgency where it matters.
If the property is let, the agent or a tenant can let us in. Surveys run on any day of the week, which can make access easier.
How a thermal roof survey works in Knockholt Pound
A thermal survey can point to places where heat is escaping through the roof. Gaps in loft insulation and poorly insulated areas can stand out on the images. The difference shows most clearly when it is warm inside and cold outside. The report shows the images and explains what they may mean. It is not an energy rating or a heat loss calculation. If you are worried about wet areas near outlets and upstands and cold areas below the roof, a survey will tell you what’s going on.
In a village or hamlet like Knockholt Pound, roofs can be steep, old and hard to see from the lane. A drone and a thermal camera each give a view you can’t get from the ground. Both the forecast and the airspace are checked first, and the journey is planned in advance. Steep slopes and tall chimney stacks are where a close-up view adds the most.
Where we cannot see part of the roof, the report says so. That way, it is clear what was covered and what wasn’t.
- Place
- Knockholt Pound (TN14)
- Wider area
- Kent
- Price
- From £400 inc. VAT
- Report
- A written report with photos, by email
- Appointments
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
What a thermal roof survey looks like in Knockholt Pound
Many older homes in Kent have handmade clay tiles, including Kent peg tiles held by pegs through two holes, and tile-hanging on their upper walls. Kent’s older buildings take in oast houses and timber-framed Wealden hall houses as well. Where a roof is steep, tall or hard to see from ground level, drone photos and thermal images add detail. With Down House about 3.2 miles west, Knockholt Pound sits in an area with a long building history. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and a listed home or one in a conservation area may need consent for changes of material.
Anyone responsible for a site like Halstead Community Primary School will know that thermal images can show where wet insulation sits under a big flat roof.
Knockholt Pound is about 4 miles north-west of Sevenoaks, in Kent. We provide thermal roof surveys for homes and businesses in Knockholt Pound and the surrounding area. We cover towns and villages across Kent, from the larger towns to small villages. London is in our area too.
Thermal roof surveys in TN14 work the same way as everywhere else we cover. Local streets include Old London Road, Bond Close and Main Road, and we cover them all. Nearby, we also carry out thermal roof surveys in Knockholt (1 mile south-west), Halstead (1 mile north-east), Sepham Heath (1 mile north-east), Pratt's Bottom (2 miles north) and Badgers Mount (2 miles north-east). Further out, we also cover Dartford (10 miles north-east), Sevenoaks (4 miles south-east), Royal Tunbridge Wells (14 miles south-east), Gravesend (14 miles north-east), Tonbridge (11 miles south-east) and Northfleet (13 miles north-east).
Around Knockholt Pound
Locally, jobs take us to homes and businesses close to Polhill Bank and The Three Horseshoes pub. Knockholt Pound’s nearest station is Knockholt station, roughly 2 miles north. Other landmarks nearby include Orpington Hospital (3.4 miles north) and Lullingstone Castle (4.3 miles north-east). For a walk, there’s Downe Bank and Betsom's Hill.
Nearby places to Knockholt Pound
What else we do in Knockholt Pound
How it works
Every visit follows the same pattern: we listen to what’s been worrying you, look at the roof from every safe viewpoint, photograph what we find and make notes for the report. It normally takes between one and two hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. Older rural homes like those around Knockholt Pound can have a main roof, lower lean-to roofs and outbuildings all joined together. Each part is looked at from wherever it can safely be seen.
- First we go over the roof, the problem you’ve noticed and the conditions forecast for the visit.
- We check the roof from ground level, from windows and from the roof itself where it’s safe.
- A thermal camera records how the surface temperature varies across the roof.
- We check the patterns that stand out with moisture readings where there’s safe access.
- The report sets out the images, what they suggest and what we recommend.
How to prepare
- Have any questions written down, so nothing gets missed
- Gather any invoices or paperwork from past roof work
- Agree roof access with the managing agent if it’s shared
How to book
For a price for thermal roof surveys in Knockholt Pound, call 07833 053749 or email us. Some details about the property and the roof help us price the survey accurately.
Read more
Your questions about thermal roof surveys in Knockholt Pound
Does a conservation area affect roof work in Knockholt Pound?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it is in a conservation area. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Is Knockholt Pound in the area you cover?
Yes, Knockholt Pound is one of the places we work. The survey and report are the same in Knockholt Pound as anywhere else, and visits run on weekdays and weekends.
Can you tell me if my roof has asbestos?
No. Asbestos surveys and sampling are not something we do. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000.
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.
Can you do a thermal survey in any weather?
The weather makes a real difference. It works best after a sunny day, with a dry roof surface and little wind. Rain and strong wind can make the images less clear, so we discuss the forecast when booking.
Can you check my loft insulation with a thermal camera?
The camera can point to heat loss and gaps in insulation. The survey isn’t an energy rating or a heat loss calculation, but the images show where improvements may help.
Can you survey a shared roof?
Yes. A shared roof needs access agreed first, with whoever owns or manages the building. Tell us about it as you book and we’ll plan the survey around it.
Different roofs, different checks
Parapets, valleys and junctions
When valley or parapet gutters overflow, water can get into walls and ceilings. Thermal images, checked with moisture readings, can help trace it.
Pitched slate and tile roofs
From inside the loft, the camera can help with damp around chimneys, valleys and roof windows. Findings are checked with moisture readings.
Signs you need a thermal roof survey in Knockholt Pound
After a long-running leak, insulation under a flat roof can stay wet. Knowing how much of the roof is affected helps decide between a local repair and more. A thermal survey, checked with moisture readings, can give a much clearer picture.
People normally book a survey after spotting one of these:
- Damp patches with no obvious cause
- Areas losing heat at the eaves and junctions
- Leaks that are hard to trace
- Areas of a flat roof that may hold water
Take an older house close to St Katharine's Church: steep roofs, tall chimneys and hidden valleys can be hard to see from ground level, and that’s where a view from above or with a thermal imager helps.
Before booking anyone
- Are they insured for the work?
- What exactly goes into their report
- Whether the loft space is looked at, where there is one
- Is there a chance to talk the report through?
What affects the price in Knockholt Pound
Prices vary from roof to roof, and it comes down to:
- Features like valleys, chimneys, dormers and parapets
- How many separate roofs there are, such as extensions, dormers and garages
- Whether you choose the Basic, Standard or Premium Survey
- Whether thermal imaging or a drone is needed
One thing that affects the price is the package: from £150 for Basic, £250 for Standard and £400 for Premium, with VAT included. The roof’s size, height and access matter as well.
Getting in touch
Getting the details right at the start saves time. Please include:
- Any marks or damp showing indoors
- Access details, like a loft hatch or a shared roof
- The type of building and roof, like pitched or flat
- The property’s address and postcode
Not sure which survey you need? It is easiest to phone 07833 053749 or email us and describe the roof and what’s worrying you. We’ll explain the options and the price.
Checking the roof from ground level
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. Do not go up yourself.
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 don’t climb up for a closer look.