Technical Insights
Field notes on leak investigation, sensors and standards.
Written by the engineers doing the work — for architects, contractors, asset managers and anyone who needs the roof to stay dry.
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15 September 2026
How Many Leak Sensors Does a Roof Actually Need?
There is no sensors-per-square-metre answer, and anyone giving you one has not seen your roof. The rule that does govern sensor layout comes from BS 8102:2022, and it is economic as much as technical.
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15 September 2026
Smart Roof Monitoring: What It Is, How It Works, and What It Cannot Do
Smart roof monitoring, permanent leak detection and integrated leak detection describe the same thing. What the technique actually detects, the five system types, how zone size is governed, and where the standards sit.
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11 September 2026
Permanent Monitoring vs Electronic Integrity Testing: Two Different Things
Both get written into specifications as leak detection, and they answer completely different questions. What LRWA GN18:2025 covers, what it does not, and why a well-specified roof has both.
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11 September 2026
How to Specify a Smart, Integrated Leak Detection System in a Roof Build-Up
The clause usually reads as one line. Here is what a specification for permanent leak detection in a roof build-up actually has to settle — position, power, zoning, service life, commissioning and warranty — with model performance wording.
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26 March 2026
Leak Detection for Data Centre Roofs: What to Specify, and When
Integrated leak detection is increasingly specified on data centre roofs — but rarely detailed. An independent UK consultant on the options, the pitfalls, and when to decide.
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26 March 2026
Electronic Leak Detection — The Complete UK Guide
High-voltage vs low-voltage electronic leak detection, membrane compatibility, BS 6229:2025, reporting and specification — independent UK guidance from Vector.
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26 March 2026
Waterproofing QA — The Step Everyone Skips
Waterproofing QA is the step everyone skips. What commissioning testing involves, what happens when it's missed, and why insurers expect documented evidence.
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19 March 2026
The Cheapest Roof Inspector Will Cost You More
Biannual roof inspections are a contractual requirement — not a box-ticking exercise. Using unqualified inspectors voids guarantees and now carries legal risk under the Building Safety Act 2022.
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19 March 2026
Flat Roof Leak Detection: 9 Methods Compared
All nine professional flat roof leak detection methods compared — electronic integrity testing, moisture mapping, tracer gas, thermography, buried leak location — and how to choose.
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19 March 2026
You’ve Got a Roof Leak. Here’s How We’d Approach It.
Not every roof leak needs sophisticated equipment. Some need a torch and twenty years of knowing where to look. How a competent investigation actually works — step by step.
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15 March 2026
Green Roof Leak Detection: Why Standard Methods Fail
Why standard leak detection fails on green roofs and what works instead. Pre-handover integrity testing and permanent sensor monitoring for buried membranes.
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15 March 2026
Permanent Roof Leak Monitoring: Sensor Technology Guide
How permanent roof leak sensors work, where they sit in the build-up, what the standards say, and what a monitoring system costs against the cost of an undetected leak. A guide for architects, contractors and building owners.
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5 March 2026
Defect Liability Period Roof Risk
How to manage roof leak risk during the defect liability period. Protect your investment with sensor monitoring and independent leak investigation while the contractor is still on the hook.
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5 March 2026
CLT Moisture Monitoring for Timber Buildings
Why CLT structures need permanent moisture monitoring, where sensors should be placed, what the standards and the courts now expect, and what continuous data tells building owners, insurers and warranty providers.
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5 March 2026
What Is Buried Leak Detection?
Buried leak detection explained: how electronic methods locate concealed leaks in complex roof and waterproofing systems without destructive investigation.