Hertfordshire · London and the South East
Allen's Green Roof Leak Investigation
We carry out roof leak investigations in Allen's Green and the rest of Hertfordshire. We survey on weekdays and at weekends.
- Wet patches high on an inside wall
- Water marks that spread in wet weather
- Drips from nail tips in a cold loft
Signs you need a roof leak investigation in Allen's Green
Slipped or missing slates and tiles let rain reach the underlay. Ageing felt underlay eventually tears and lets water through, while some very old roofs have nothing under the coverings. On slate roofs, slipping is frequently caused by corroded nails.
Problems we come across frequently include:
- Stains around a skylight
- Wet patches high on an inside wall
- Drips from nail tips in a cold loft
- Water dripping from rafters or underlay
Landlords with a home close to Sawbridgeworth station may find that tracing a leak quickly matters when a tenant is living with it.
What to check before booking
- Whether the roof space is looked at, where there is one
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- Whether you get a written report with photos
- How much experience they have with roofs like yours
How a roof leak investigation works in Allen's Green
Not every drip is a leak. Condensation in a cold, poorly ventilated loft can drip from nails and timbers, and the stains look much like a leak. Telling the two apart matters, because they need very different work. We check the pattern of damp, the weather and the ventilation before reaching a view. We survey valleys and parapet gutters, rooflights and dormers and the roof space, and common reasons people get in touch are a leak that comes and goes with the weather and damp underlay across a wide area.
For a small place like Allen's Green, the inspection is the same as anywhere: we simply plan the journey and access ahead. Let us know where the water shows, when it appears and anything you’ve noticed outside, plus any earlier repairs. If you have photographs of the water coming in, they help as well.
Pictures do a lot of the work in our reports, so you can see each defect rather than just read about it. If something couldn’t be seen safely, the report is clear about it.
- Location
- Allen's Green (CM21)
- Wider area
- Hertfordshire
- Cost
- From £150 inc. VAT
- Reports
- A written report with photos, by email
- Appointments
- Weekdays, Saturdays and Sundays
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Useful tips for Allen's Green property owners
A survey works best with a little help from you, before and after. Tips:
- Protect furniture and flooring under the leak
- Mention earlier attempts to fix the leak
- Keep a photo record of the damp patch
- Move stored items away from the hatch
Where we find more than one possible route, we say which is most likely and why. We say which items need prompt attention.
Check the loft after heavy rain, with care and a good torch. Watch for water marks, wet underlay and damp wood. Photograph anything new.
Why it’s worth a survey now in Allen's Green
If a leak has been ‘fixed’ before and has come back, the cause was probably missed. We look past the obvious spot and check each likely route. That is often what breaks the cycle. Matching old materials, like handmade tiles or stone slates, can take time to source. That is one more reason to find defects before they become urgent.
Prices quoted always include VAT, and the written report is part of the package. Roof leak investigation starts from £150, including VAT. Where your roof sits in the range depends on its size, height and access.
Why us?
- Independent findings on the roof’s condition
- Covered by professional indemnity and public liability insurance
- Weekday and weekend surveys
- Photographs and a written report every time
Landlords, agents and block managers in Allen's Green
If you own several properties, surveys can be booked for more than one address. To discuss a number of properties, ring 07833 053749 or drop us an email with the addresses.
Surveys can also be booked by buyers’ agents acting for a client. The report is emailed, so it can go straight to your client, photos included.
Roof leak investigations in Allen's Green: local notes
About 2.2 miles north-west lies Much Hadham Palace, a reminder of how long the area around Allen's Green has been built on. If yours is one of the older homes, expect a mix of original materials and later repairs on the roof, and a listed home or one in a conservation area may need consent for changes of material. Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. Knowing the roof type helps narrow down where water may be getting in.
Take an older house close to Former Church of St Anne: water on an older roof tends to find its way in at the lead, the valleys or the chimney.
Allen's Green is about 3 miles south-west of Bishop's Stortford, in Hertfordshire. If you are in Allen's Green, booking works exactly as it does anywhere else: get in touch, agree the price and pick a day. Across Hertfordshire, we cover Allen's Green and the places around it. Our Chelmsford page covers surveys nearby.
Surveys in CM21 work the same way as everywhere else we cover. If you are just outside Allen's Green, we cover Thorley (2 miles north-east), High Wych (2 miles south), Spellbrook (2 miles east), Sawbridgeworth (2 miles south-east) and Thorley Street (2 miles north-east). Larger places within reach include Stevenage (13 miles west), Bishop's Stortford (3 miles north-east), Welwyn Garden City (13 miles west), Hoddesdon (8 miles south-west), Cheshunt (11 miles south-west) and Hatfield (15 miles west).
What’s near Allen's Green
The closest station to Allen's Green is Sawbridgeworth station, roughly 2.5 miles south-east of the centre. Other landmarks nearby include Herts and Essex Hospital (3.4 miles north-east) and Harlow Mill (3.2 miles south). Open spaces near Allen's Green include Thorley Wash nature reserve.
The survey, step by step
A survey visit follows a simple order: we hear what you’ve seen, look at the roof from every safe viewpoint, photograph what we find and record our findings for the written report. Most visits take an hour or two for most homes, though a hard-to-trace leak can take longer. Somewhere as small as Allen's Green, access is frequently the only tricky part. Mention any outbuildings, barns or garages you want included, and anything about the roof you already know. Visits can be on weekdays, Saturdays or Sundays.
- You pick a Basic, Standard or Premium Survey.
- A visit is booked for a weekday, Saturday or Sunday.
- The investigation works from the stain back to the roof.
- Where it is useful and included, we take moisture readings and use thermal imaging.
- The report explains the likely entry point and what needs attention.
Before we arrive
- Point out any leaks or damp patches
- For flats, check roof access has been agreed
- If you are buying, let the agent know when we are coming
How to book
Roof leak investigation starts from £150, including VAT. What you pay depends on the roof’s size, access and the package, so call 07833 053749 or email us with the details.
Advice
Your questions about roof leak investigations in Allen's Green
Do you cover Allen's Green?
We do. Every survey there gets the same written report with photographs, and visits run on weekdays and weekends.
Does a conservation area affect roof work in Allen's Green?
Your council is the best source, with Historic England’s list for listed buildings. Both listing and conservation areas can limit changes of roofing material.
Will you go up on the roof?
Only when it is safe. Safe viewpoints, the roof space and a drone where it applies cover most of what’s needed, and anything out of sight is recorded in the report.
Do you use drones?
Where it is applicable and safe, yes. We fly a sub-250g drone and we’re a CAA-registered drone operator (Flyer ID and Operator ID). Drone inspection is part of the Drone Roof Survey and the Premium Survey, where it applies.
Can thermal imaging help find my roof leak?
It can, when the conditions are right. The best results come after a sunny day, on a dry roof with little wind. Damp areas can hold heat differently from dry ones. We always check what it shows with moisture readings.
Will you check the loft?
If the survey needs it and the roof space can be reached safely, yes. A clear path to the hatch helps.
Are you structural engineers?
No. Visible signs like deflection or sagging are recorded, but calculations and an engineer’s opinion are outside what we do. The report will say if you need an engineer.
Nearby places to Allen's Green
What else we do in Allen's Green
DIY checks: what’s safe
Inside, the loft is a good place to look, with care. Use a torch and stay on the joists or boards, and look for staining, damp timber or daylight coming through.
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.