Hertfordshire · London and the South East
Roof leak investigation in Frogmore, Hertfordshire
Tracing where water is getting into your roof in Frogmore, using drones and thermal imaging where it applies. Call or email for a price.
- Water coming in around a roof light or dormer
- Brown rings on upstairs ceilings
- Damp ceilings under a flat roof
About our roof leak investigation in Frogmore
Older homes have more places for water to get in. Lead flashings crack or lift, valley linings wear and parapet gutters overflow when outlets block. A central valley gutter on a butterfly roof often turns out to be the source in heavy rain. Parapet walls and their gutters are looked at from wherever it’s safe. The findings are recorded with photos. We survey rooflights and dormers, chimney stacks and the roof space, and the problems we are asked to look at most are condensation that looks like a leak and leaks that appear only in driving rain.
Roofs in small places like Frogmore often stand in the open, where storms hit ridges, verges and chimneys hardest. Damp in old stone, brick or timber walls is slow to dry out, which makes finding the cause quickly worthwhile. A written record also helps if you need to explain it to anyone else.
With the Standard Survey, you also get moisture detection, a structural check and a follow-up consultation. The Premium Survey adds thermal imaging, drone inspection where applicable, structural analysis and an in-person consultation.
- Place
- Frogmore (AL2)
- Region
- Hertfordshire
- Prices
- From £150 inc. VAT
- Reports
- Emailed report with photos and recommendations
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
Honest limits
Some things cannot be seen without opening up the roof, and that sets some limits:
- Leaks that only appear in weather we cannot recreate
- Faults hidden behind ceilings or boarding
- Whether rotten timbers meet design loads
Not sure which survey suits your roof? You can phone 07833 053749 or email us and we will tell you before you book. What our survey covers.
What we check
- The roof space
- Valleys and parapet gutters
- Chimney stacks
- Lead flashings
- Rooflights and dormers
- Flat roof details
- Slate and tile slopes
Prices for roof leak investigations in Frogmore
A few things affect what a survey costs:
- The number of roofs, including extensions and garages
- Basic, Standard or Premium
- How big the roof is
- If the survey needs thermal imaging or a drone
All our prices include VAT. Our price is from £150, including VAT. We confirm the price for your roof before booking.
What to let us know when you contact us
If you can, have these to hand when you contact us:
- The style of property, from a terrace to a block
- Where the property is, with the postcode
- Photos of the roof, taken safely from ground level or a window
- How the loft is reached, if there is one
To book a survey, call 07833 053749 or drop us an email and tell us the address and what’s prompted the survey. We will confirm the price before booking.
When to book a survey in Frogmore
Many leaks begin at a flashing. Where a roof meets a chimney, a wall or a dormer, lead or mortar seals the joint. Once that seal cracks or lifts, water gets behind it, often well away from where it shows.
Problems we come across often include:
- Drips from nail tips in a cold loft
- Wet patches high on an inside wall
- Damp ceilings under a flat roof
- Water coming in around a roof light or dormer
Landlords with a home close to How Wood station may find that a tenant living with a leak needs the cause found, not just the stain painted over.
What to check before booking
- Which limits apply to the survey
- How much experience they have with roofs like yours
- What exactly goes into their report
- Whether they hold professional indemnity and public liability insurance
Why get it checked now?
Damp loft insulation loses much of its value. Insulation can soak up water quietly before anything shows below. Catching it early limits what has to be replaced. For older village homes like those around Frogmore, the right replacement materials are not always easy to find quickly. Spotting a problem early leaves room to find them.
Our price is from £150, including VAT. Basic starts from £150, Standard from £250 and Premium from £400, VAT included, and we can help you choose.
Why us?
- 98% of clients satisfied
- Thermal imaging and drones used where they help
- Plain-English reports with photos
- More than 20 years surveying roofs
See what a roof survey costs and two real surveys.
Frogmore roofs and the weather
Historic houses such as High Elms Manor, about 2.8 miles south-west, show how far back building in the area around Frogmore goes. On older houses around here, roofs frequently 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. Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles. The covering and its details give the first clues when tracing where water is coming from.
The streets around a church like Church of the Holy Trinity are frequently among the oldest in a place, and if your home is one of the older ones nearby, leaks on older roofs often start at lead flashings, valleys or around old chimney stacks. If you look after a shop, office or commercial unit, for example near The Maltings, finding where water is getting in quickly keeps disruption down.
Frogmore is about 2 miles south of St Albans, in Hertfordshire. In Frogmore, as across Hertfordshire, every roof gets the same careful survey. We cover towns and villages across Hertfordshire, from the larger towns to small villages. London is in our area too.
We survey roofs across the AL2 postcode area for roof leak investigations. Local streets include Centaurus Square, Frogmore and Avian Avenue, all of which we cover. Other places close to Frogmore include Park Street (1 mile north-west), How Wood (1 mile west), Colney Street (1 mile south-east), Chiswell Green (1 mile north-west) and Sopwell (1 mile north). Further out, we also cover Watford (5 miles south-west), Hemel Hempstead (6 miles north-west), Stevenage (15 miles north-east), Welwyn Garden City (8 miles north-east), Harpenden (7 miles north) and Hoddesdon (14 miles east).
Around Frogmore
Around Frogmore, our work takes us to homes and buildings near The Old Red Lion pub and Marlborough Science Academy and the streets around them. Frogmore has its own railway station: How Wood station. Other landmarks nearby include Hypocaust Museum (2.3 miles north-west) and Hilfield Castle (4.5 miles south). For a walk, there’s Verulamium Lake and Broad Colney Lakes.
Your questions about roof leak investigations in Frogmore
Do you carry out roof surveys in Frogmore?
Yes, Frogmore is one of the places we work. Every survey there gets the same written report with photographs, and visits run on weekdays and weekends.
Is my home in Frogmore listed or in a conservation area?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it’s in a conservation area. 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.
Will you walk on the roof?
Only when it is safe. Most of what we need can be seen from safe viewpoints, the loft and, where applicable, a drone, and anything out of sight is recorded in the report.
What does the report include?
It sets out what we found, why it matters and what we recommend, backed by photos. It also says if any part of the roof couldn’t be seen safely.
Is this an asbestos survey?
No. We don’t sample or test for asbestos. Where a material might contain it, such as old cement sheets on a building from before 2000, the report flags it, with a recommendation to have a specialist asbestos surveyor check before it is disturbed.
How do I arrange a roof leak investigation in Frogmore?
It’s easiest to ring 07833 053749 or drop us an email. Tell us the address and a little about the roof, and we will point you to the right survey. We survey seven days a week.
Do you look in the loft space?
If it’s needed and safe to reach, yes. Inside, we look for damp, staining, gaps and sagging.
More services for Frogmore
Surveys for landlords and agents in Frogmore
Landlords, agents and building managers in Frogmore and across Hertfordshire can book any of our surveys. To discuss a property or a block, phone 07833 053749 or use the contact form.
Where a roof is shared: we need access agreed with whoever owns or manages the building. Tell us about it when you book and we’ll plan the survey around it.
How the survey works
We look at the roof from outside and, where it’s relevant and there is safe access, from inside the loft space too. Inside, we look for staining, damp, gaps and signs of movement. All in, the survey normally takes about 1–2 hours for most homes, though a hard-to-trace leak can take longer. For a village or hamlet like Frogmore, the journey is planned beforehand: tell us about narrow lanes, gates, long drives and where we can park. The roof is looked at from the ground, from windows, from the loft where there is safe access and from the roof where it is safe.
- We help you choose the package that suits the leak.
- We agree a date, including weekends.
- The investigation works from the stain back to the roof.
- Moisture detection and thermal imaging are used where your package includes them and they help.
- The report explains the likely entry point and what needs attention.
Before the survey
- If you’re buying, let the agent know when we’re coming
- Clear the way to the loft hatch
- Unlock side gates and any roof access doors
Booking a survey
Roof leak investigation starts from £150, including VAT. The exact figure depends on the roof and the package, so call 07833 053749 or send us an email with the details.