Hertfordshire · London and the South East
Roof Leak Investigation in Stevenage
Not sure what state the leaking roof is in? You can book a roof leak investigation in Stevenage and across Hertfordshire, with plain-English findings.
- Brown rings on upstairs ceilings
- Damp patches next to the stack
- Damp ceilings under a flat roof
Roof leak investigations for homes and businesses in Stevenage
On older houses, leaks frequently start at lead work and hidden gutters. Worn lead, tired valley linings and blocked parapet outlets are frequent causes. A central valley gutter on a butterfly roof often turns out to be the source. We check parapets, valleys and flashings from each safe vantage point. The findings are recorded with photos. If you’ve noticed a leak that comes and goes with the weather and drips in the loft during heavy rain, we can find out what’s behind it, whatever the roof.
In a place like Stevenage, lots of buildings have flat roofs, from shops and offices to blocks of flats and extensions. Flat roofs leak at upstands, outlets, splits and blisters, and water can travel under the covering before it drips. Moisture readings and a proper look at the details help narrow down where it is coming in. The usual signs are ponding, blisters and splits in the covering.
We write the report in plain English, so you don’t need to be a roofer to follow it. Photographs show what each point refers to, and recommendations are put with the most urgent first where relevant.
- Location
- Stevenage (SG1, SG2, SG3)
- Wider area
- Hertfordshire
- Cost
- From £150 inc. VAT
- Your report
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Leaks and storm damage in Stevenage
Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates, and flat-roofed additions turn up almost everywhere. Where water gets in depends a good deal on what the roof is made of and how it is detailed. Stevenage was built as one of England’s post-war new towns. Many homes in the new towns date from the post-war decades, with concrete interlocking tiles, low-pitched roofs and flat-roofed garages and porches. Leaks on homes like these often come from flat-roofed additions or from rain driven up under low-pitched tiles.
If your home is one of the older ones in the streets near St Hugh & St John, water on an older roof tends to find its way in at the lead, the valleys or the chimney. For site and facilities teams at buildings such as Saint Vincent de Paul Catholic Primary School, a leak through a large roof is often found some distance from where the water shows inside. For landlords with property near Stevenage station, a clear finding on where water gets in helps you brief a roofer right away.
Stevenage is about 26 miles east of Milton Keynes, in Hertfordshire. Stevenage gets the same service as everywhere else we work: a close look at whatever is safely visible, photographs and a clear written report. Across Hertfordshire, we cover Stevenage. You can also see our page for Milton Keynes.
We survey roofs across the SG1, SG2 and SG3 postcode area for roof leak investigations and the streets around it. Streets in the area include King Pin Square, Market Square and Market Place, all of which we cover. Being close to the A602 and B197, Stevenage is simple for us to get to for roof leak investigations. We also cover Bedwell (1 mile south-west), Pin Green (1 mile north-west), Chells (1 mile east), St Nicholas (1 mile north) and Rooks Nest (1 mile north). Further out, we also cover St Albans (13 miles south-west), Bishop's Stortford (15 miles east), Welwyn Garden City (8 miles south), Harpenden (10 miles south-west), Hitchin (5 miles north-west) and Hoddesdon (13 miles south-east). Stevenage is among the bigger towns we cover in Hertfordshire.
Near you in Stevenage
Around Stevenage, our work takes us to homes and buildings near The Heathcote School, Church of Saint Nicholas and Marriotts School, among other places. The closest station to Stevenage is Stevenage station, roughly 1.2 miles south-west. A little further out are Benington Castle (2.9 miles east) and Stevenage Museum (0.8 miles south-west). Green spaces nearby include Pryor's Wood.
Landlords, agents and block managers in Stevenage
Businesses and commercial landlords can book us too. Bigger roofs take more time.
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. The report sets out what needs attention now and what can wait.
What affects the cost of roof leak investigations
Our packages start from £150, inc. VAT. What you pay for your roof depends on:
- How big the roof is
- The use of thermal imaging or a drone
- House, block, shop or office
- Building height and the viewpoints available
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. You will know the figure before booking.
Getting in touch
There is no need for technical words. Just let us know:
- When you need the report by
- What’s prompted the survey
- Any photos you have, taken from the ground or a window
- Any marks or damp showing indoors
A quick phone call is typically the easiest start: phone 07833 053749 or drop us an email, and we’ll ask about the building and what you need. You will have a price before anything is arranged.
How the survey changes by roof type
Flat roof upstands and outlets
Upstands seal the edge of a flat roof where it meets a wall. If it is too low, cracked or poorly dressed, water gets behind it.
Slate and tile slopes
On slate roofs, corroded nails let slates slip. One slipped slate can be enough to cause a leak.
Common questions in Stevenage
Is my home in Stevenage 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 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.
My home in Stevenage has a flat-roofed garage or porch. Is it worth having that looked at?
It’s often worth it, as these roofs are easy to forget. On buildings from before 2000, cement sheet roofs may contain asbestos and should be checked by a specialist asbestos surveyor before anyone disturbs them.
Can you give me structural calculations?
No. We note visible signs like sagging or deflection, but we don’t carry out calculations or give an engineer’s opinion. If we think you need an engineer, the report says so.
What will the report tell me?
Written findings with photos, explaining the condition of the leaking roof, any defects and our recommendations. The Standard Survey adds moisture detection and a structural check, and the Premium Survey adds thermal imaging, drone inspection where applicable and structural analysis.
Can thermal imaging help find my roof leak?
We use thermal imaging where it helps, and it’s included in our Premium Survey. It picks up temperature patterns rather than water, so anything it suggests is checked with moisture readings.
Do you climb onto every roof?
Only where it’s safe to do so. We inspect what can safely be seen: from ground level, from windows and vantage points, from the loft space, from the roof itself where safe and by drone where applicable. Anything we can’t see is noted in the report.
Why does not the damp patch line up with the hole?
Rain that gets in will run along whatever it lands on. On a flat roof it can travel under the covering before it finds a way through the ceiling. Tracing that path is the heart of a leak investigation.
Places near Stevenage
More services for Stevenage
Why act early in Stevenage
Leaks tend to get worse, not better. Each storm can open a gap a little more. An investigation now gives you time to plan the work. Roofs in a place the size of Stevenage range from new to very old, but none of them improve with neglect. What starts as a cracked flashing or a blocked outlet becomes wet timber and stained ceilings in time.
There are three survey packages: the Basic Survey from £150, the Standard Survey from £250 and the Premium Survey from £400, all with VAT included. The price for your roof depends on its size, access and what you’d like to know.
What you get with us
- Satisfaction rate of 98%
- Plain-English reports with photos
- Thermal imaging and drones used where they help
- Over 5,000 surveys carried out
See what a roof survey costs and our case studies.
What we do, step by step
Before we start, let us know why you’ve booked: a purchase, a leak, a storm, new work or simply peace of mind. That way we can focus on what matters to you. The visit typically takes about 1–2 hours at most homes, and more on a big or complicated roof. If the property is near the centre of Stevenage, let us know about car parks or permit rules nearby. We will want to see the loft, if there is one, and any ceiling or wall showing damp. Outside, the roof is viewed from every point that’s safe.
- We start with what you’ve seen: where the stain is and when it gets worse.
- Inside, we check the damp area and the roof space above it.
- We check the likely entry points outside, such as flashings, valleys, chimneys and gutters.
- Moisture readings and thermal imaging are used where they help.
- We email a report with photographs, the likely entry point and recommendations.
Before the survey
- For flats, make sure roof access has been agreed
- Let us know about parking near the property
- Show us where any leaks or stains appear
How to book
Unsure which package suits your roof? The easiest way is to ring 07833 053749 or email us and describe the roof and why you want it surveyed. We’ll talk you through the options and what they cost.
Read more
Practical tips
A survey works best with a little help from you, before and after. Tips:
- Take dated photos of the leak
- Mention any plumbing above the damp area
- Keep water away from lights and sockets
- Record whether it leaks in every downpour or only some
We email the report to you. It sets out where we believe the water is getting in, how it’s travelling and what needs attention. Turnaround is within 48 hours for Basic, 24 to 48 hours for Standard and the same day for Premium.
Check the loft after heavy rain, with care and a good torch. Watch for water marks, wet underlay and damp wood. Photograph anything new.