On a commercial site the survey is rarely the end in itself. Somebody wants it because a lease is ending, an insurer has asked a question, a purchaser is doing due diligence, or three tenants are arguing about one bill.
Glasgow Drainage Pros carries out commercial CCTV drain surveys across Glasgow and North Lanarkshire, and writes the report for whoever has to act on it.
When is a commercial CCTV drain survey needed?
The recurring blockage is the obvious one, and a run that fails every few months has a drainage issue behind it, and clearing the drain blockages again without looking is just buying another few months.
Beyond that, a commercial CCTV survey is often triggered by an event instead of a symptom. A lease change, a sale, a refurbishment, a claim, or a dispute over a shared run.
Each of those needs something slightly different from the same camera, which is mostly a question of how the report is written.
Dilapidations and schedules of condition
A schedule of condition records the state of a property at the start of a lease, so that at the end the landlord can only claim for what actually deteriorated. Drainage tends to get left out of it, which suits whichever party is better informed.
Surveying at lease commencement gives an incoming tenant a dated record of what they inherited. One at lease end gives either side evidence about what changed.
For a tenant taking on a unit with a kitchen, this is worth doing before the keys change hands. Grease damage accumulated by a previous occupier is difficult to argue about later without a baseline.
Multi-let buildings and apportionment
Glasgow has a lot of buildings with commercial units at street level and flats or offices above, all running into one stack and out through a shared run to the sewer.
When that run fails, the question is which section failed and what put it there. CCTV footage with distances against it answers both, and that generally turns an argument into an apportionment.
Factors commissioning a survey for a shared run usually want the report addressed to them, with the footage available to every owner. Say so at the booking stage and it’ll be set up that way.
Surveying a complex drainage network
A large commercial site is rarely one run, because yard gullies, roof drainage, kitchen waste and staff WCs can all take separate routes to different access points before joining a private sewer, and on older Glasgow sites some of those routes aren’t recorded anywhere.
Working out the drainage network is the part that takes the time. The engineer traces each pipe from the access point it starts at, confirms where it goes with the drain camera, and builds a schematic as the survey progresses.
Access points
Every survey depends on getting into the system, so chambers that have been tarmacked over, built on during a refit, or lost under a new floor slab all have to be located and opened first.
Where an access point can’t be reached at all, the report records the section as unsurveyed. That’s a more useful answer than a guess, and it usually tells the site something worth knowing about its own drainage infrastructure.
Insurance claims
After an escape of water or a subsidence claim, an insurer will often want to know whether the drainage caused it, contributed to it, or had nothing to do with it.
Loss adjusters generally ask for footage and a written report rather than a summary, and they tend to want the defect located along the run, with a distance against it.
We survey and report, and we don’t take a view on liability. That’s the adjuster’s job, and a contractor offering an opinion on it usually just muddies the file.
Pre-acquisition due diligence
Buying commercial properties means inheriting the drainage that comes with them, and a collapsed run under a service yard is an expensive thing to find out about afterwards.
Surveying before the deal completes gives you the condition of the system and a basis for pricing remedial work into the negotiation. It also establishes where the private drainage ends and the public sewer begins, which matters more on a large site than most buyers expect.
Build-over and adoption
A site planning an extension across an existing run, or offering a private run for adoption, will usually need a survey as part of the application.
Scottish Water and your local authority set what’s required for each of those, and it varies by site, so the sensible order is to ask them what they need and then commission the survey to match.
How the survey runs on a commercial site
The engineer lifts the manhole covers and works out the layout before the camera goes anywhere. On a site with several chambers that mapping is half the job, particularly where drawings are missing or out of date.
The CCTV camera then travels each run of the drainage system, recording continuously, with the distance logged from the manhole as it goes. Deeper chambers and larger diameters need a different crawler unit than a domestic push rod would manage.
When the run needs cleaning first
A drain inspection through standing water or heavy silt shows you the silt. Where that’s the case the run gets jetted first and surveyed after, which is why we generally bring both on a commercial visit.
Our high-pressure jetting page covers what that involves.
What the survey report contains
Every observation in the drain survey report gets logged against a distance from the chamber. A defect can then be found again by somebody who wasn’t there on the day.
Standard drainage reports use a coding system that turns descriptions like a crack, a displaced joint or root ingress, meaning tree roots grown in through a joint, into consistent abbreviations.
A surveyor, an insurer or another contractor will recognise those codes without needing the job explaining to them.
Alongside the coding you get the continuous footage, a schematic of the runs surveyed, and a plain-English summary of what it means and what we’d suggest doing about it. That last part matters, because the people reading a drainage report are rarely drainage people.
What a report can’t do
The footage records the pipe on the day it was filmed, so it won’t tell you when a hairline crack becomes a fracture. Any section that couldn’t be reached is recorded as exactly that.
Surveys as part of planned maintenance
Not every commercial CCTV drain inspection follows a problem. On a site with a maintenance schedule, a periodic survey shows how fast deposit is rebuilding and whether the interval between visits is set correctly.
That turns a schedule from a guess into something calibrated, and it catches structural drain problems early, while relining is still an option and before a section fails outright.
Surveys after a refit
Booking a survey once the contractors have left is worth doing on any commercial fit-out. Building debris in the drainage system is common, and finding it before the first blockage costs a great deal less than finding it during a service.
Commercial CCTV drain surveys across Glasgow and North Lanarkshire
We cover the city centre, the East End, the Southside, the West End and North Glasgow, along with the North Lanarkshire towns.
Our engineers at Glasgow Drainage Pros carry the camera, rods and a jetting unit on the same vehicle, so a survey doesn’t get abandoned because the run turned out to need clearing first.
Commercial CCTV drain survey questions
How much does a commercial CCTV drain survey cost?
It depends on how many runs there are, how deep the chambers sit, whether the drainage needs cleaning before it can be filmed, and what the report has to be written for. Phone us with the address and the reason for the survey and we can talk it through.
What does a CCTV drain survey involve?
Locating and lifting the chambers, mapping the runs, then a camera through each one recording continuously with distances logged. The report follows a day or two later, because the footage gets reviewed properly first.
How long does it take?
A small commercial unit with two or three runs is usually a morning. A large site with a private sewer network can take a full day or more, and cleaning beforehand adds to it.
Do you need the drainage drawings?
They help, and often they don’t exist or don’t match what’s in the ground. Part of what a survey produces is a schematic of what’s actually there, which for a lot of older Glasgow commercial property is the first accurate record the site has had.
Can the report be addressed to our insurer or factor?
Yes. Tell us at the booking stage who it’s for, because a report written for a loss adjuster and one written for a dilapidations negotiation emphasise different things.
Book your CCTV drain survey
If a lease is ending, a claim is open, a purchase is in progress, or a shared run has failed and nobody can agree who pays, a survey turns the question into something answerable.
Any remedial work found goes through drain repairs, and recurring problems are often better handled under drain maintenance.
Tell us what the report is for before we book it, and it’ll arrive fit for that purpose. Call Glasgow Drainage Pros on 0141 673 3535.