Roofing resources
Free tools and plain-English guides for commercial roofs: measure a roof, check its falls and drainage, and understand the problems roofs develop and the surveys that find them.
Tools
Roof measurement
Find the building, outline each roof and get its plan area in square metres, with the perimeter and an optional pitch.
Flat roof falls and ponding calculator
Work out the fall a flat roof should have over its length, and how much standing water weighs on the deck when it ponds.
Gutter and outlet capacity checker
See whether a roof’s gutters and outlets can take the rain that falls on it.
Solar roof estimator
See roughly how many panels a commercial roof could take, what the array might generate in a year, and what to check on the roof before anything goes on it.
Re-roofing insulation checker
Find out whether recovering or replacing a commercial roof means upgrading its insulation under the Building Regulations, the U-value it has to reach, and roughly how much insulation gets it there.
Roof maintenance checklist
Build an inspection checklist for your roof: pick the roof type, what’s on it and when you’re inspecting, and download it as a PDF to print or share with whoever goes up.
Guides
Electronic leak detection in depth: low voltage, high voltage and when each works
How low and high voltage tests find breaches in a membrane, what each needs from the roof, and why some roofs cannot be tested.
9 min readRAAC: identification, risk assessment and the IStructE process
How to recognise RAAC, why panels fail, how the IStructE grades the risk, and what a survey and the government lists tell you.
10 min readSpecifying a roof survey: what to ask for
What to put in a survey brief: the question, the scope, the deliverables, access and reliance, and how to compare quotes like for like.
10 min readCommercial roof types and how to survey them
How single ply, felt, asphalt, liquid, hot melt, green, metal, fibre cement and pitched roofs are built, and which surveys work on each.
9 min readMoisture in flat roofs: where it gets in, where it sits and how surveys measure it
Where water gets into a flat roof, how it spreads, and what moisture meters, nuclear gauges, thermography and cores each measure.
9 min read
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Whether you’re investigating a problem or planning ahead, we’ll help you choose the right survey for your roof. Get in touch for a free quote.
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