Electronic Moisture Monitoring
Your Roof Is Telling You Something. You Just Can’t Hear It Yet.
Permanent wireless sensors embedded in your roof structure detect moisture 24/7. AI-powered alerts tell you about leaks before they cause damage — not after.
By the Time You See the Leak, the Damage Is Already Done
Most roof leaks are discovered when water stains appear on a ceiling, stock gets damaged, or a tenant complains. By that point, moisture has been tracking through your insulation for weeks — sometimes months.
Saturated insulation loses its thermal performance. Trapped moisture causes deck corrosion. Mould develops in concealed spaces. The repair bill that could have been a few hundred pounds becomes tens of thousands.
The question isn\u2019t whether your roof will leak. It\u2019s whether you\u2019ll know about it in time.
The Cost of Late Detection
- Saturated insulation that has to be ripped out and replaced
- Structural steel corrosion from prolonged moisture exposure
- Mould in concealed voids — health risk and remediation cost
- Business disruption: ceiling collapses, IT damage, stock losses
- Insurance excess on water damage claims averaging £10,000+
- Repeated patch repairs that treat symptoms, not the cause
Tector\u2019s data shows early detection can reduce repair costs by up to 95%.
How It Works
Tector\u2019s electronic moisture monitoring system — installed by Vanguard, monitored 24/7.
Wireless Sensors
Compact sensors installed beneath the roof covering and above the waterproofing membrane. They monitor moisture, temperature, and humidity continuously — with no wiring and no disruption to your building.
AI-Driven Risk Scoring
Tector’s AI analyses data from every sensor in real time, generating a risk score that tells you the likelihood of moisture problems. Not just raw data — actionable intelligence.
24/7 Live Monitoring
Access real-time moisture data through a web-based dashboard from any device. No manual inspections. No site visits. No surprises. If moisture levels spike, you know immediately.
Instant Alerts
When sensors detect critical moisture levels, the system sends immediate alerts. You can respond before water tracking causes internal damage — rather than discovering it months later.
25-Year Sensor Lifespan
Tector sensors are designed to last the lifetime of your roof — up to 25 years with no battery replacements. Install once, monitor forever.
Detailed Reporting
The platform tracks water movement within your building’s blueprint, providing a timeline of ingress and flow. Perfect for insurance evidence, warranty claims, and planned maintenance.
Why Building Owners Are Switching to Permanent Monitoring
Ideal For
Commercial & Office Buildings
Protect occupied spaces below flat roofs. No disruption to tenants or operations.
Schools & Healthcare
Satisfy Awaab’s Law and duty-of-care requirements with continuous moisture monitoring.
Warehouses & Logistics
Safeguard stock and equipment from undetected water ingress across large roof areas.
Heritage & Listed Buildings
Non-invasive monitoring that protects irreplaceable structures without altering their fabric.
Vanguard + Tector
Tector builds the technology. Vanguard installs it — and acts on the data. As waterproofing specialists, we don\u2019t just give you a dashboard full of numbers. When sensors flag a problem, we investigate, diagnose, and repair it using the right system for your roof.
We can install Tector sensors during a new roof installation, as part of a Roof Shield\u2122 maintenance programme, or retrofit them into an existing roof. The sensors integrate seamlessly with our condition reporting and planned maintenance services.
Monitoring that detects. A contractor that responds. One relationship.
Commonly Asked Questions
How do the sensors get installed?
Installation takes less than a minute per sensor. A small round hole is cut in the insulation, the sensor is placed inside, and a QR code is scanned to register it on the platform. Sensors sit beneath the roof covering and above the waterproofing membrane — completely hidden and protected. They can be installed during new roof installations or retrofitted into existing roofs.
Do the sensors need batteries or maintenance?
No. Tector sensors are designed for a 25-year lifespan with no battery replacements and no maintenance. They use LoRaWAN connectivity — a long-range, low-power wireless protocol — with gateways that cover up to 500 metres. Once installed, they simply work.
How is this different from a one-off leak detection survey?
A leak detection survey is a snapshot — it tells you what’s happening on one day. Electronic moisture monitoring is continuous. It detects changes over time, catches slow leaks that a single survey would miss, and alerts you the moment conditions change. Think of it as the difference between a single blood pressure reading and wearing a heart monitor.
What does the monitoring actually cost?
The cost depends on the number of sensors and the size of your roof. We’ll survey your building and recommend the right sensor density for your roof type. There’s a one-off installation cost plus an annual software subscription for the monitoring platform. Contact us for a tailored quote.
Can this be installed on an existing roof?
Yes. Tector sensors can be retrofitted into existing flat roofs without stripping the roof covering. A small section is lifted, the sensor placed in the insulation, and the covering reinstated. It’s a quick, non-destructive process that doesn’t affect your roof warranty.
Who uses this technology?
Tector sensors are deployed on projects across the UK and Europe, trusted by companies including ARUP, Galliford Try, and Willmott Dixon. They’re used in commercial offices, schools, healthcare facilities, heritage buildings, and logistics warehouses. Oxford’s Jesus College is one notable example — sensors detected a second leak during remediation that would otherwise have gone unnoticed.