Commercial Drainage Solihull | What Landlords Must Know

If you own a commercial property in Solihull, run a food business, or let out rental units across the B postcodes, your drainage obligations go well beyond what a homeowner has to worry about. Blocked drains cost you money and reputation. Ignored grease traps cost you even more. And if you're a landlord who thinks drainage is the tenant's problem, I'd read on before that assumption lands you in front of an environmental health officer.

Grease Traps: The One Thing Solihull Food Businesses Get Wrong Most Often

I had a job last month at a catering unit on a business park near Monkspath. The kitchen had been trading for two years without anyone touching the grease trap. By the time I opened it up, the fat layer was solid, the trap was bypassing completely, and the landlord's drain run was coated in a layer of congealed grease that stretched back about eight metres. Two hours of high-pressure water jetting, a full pump-out, and a CCTV survey later, they were back running. It didn't have to get to that point.

A grease trap intercepts fats, oils, and grease (FOG) from commercial kitchen wastewater before they cool, solidify, and coat the drain walls. Without one, or with one that's never serviced, you're effectively pouring cooking fat straight into the sewer. Severn Trent takes a dim view of that. So does the environmental health team at Solihull Council.

How often does a grease trap need emptying?

It depends on output, but for a busy kitchen, monthly servicing is not unusual. Low-volume operations might stretch to quarterly. The rule I use: if the floating grease layer has reached 25% of the trap's total capacity, it needs pumping. Waiting until it smells means you've already missed the window.

Some businesses in the area don't have a passive grease trap at all. They rely on a grease recovery unit (a powered device that separates and collects FOG automatically). These need less frequent full pump-outs but still require regular cleaning and maintenance. Don't assume it's self-managing because it has a motor.

Planned Maintenance: Why Reactive Drainage Is Expensive Drainage

Most commercial clients I deal with are reactive. Something blocks, they call us, we fix it, they go back to not thinking about drains until the next crisis. I get why. There's always something more pressing. But reactive drainage for a commercial property almost always costs more than a planned programme.

Here's what a sensible planned maintenance contract for a Solihull commercial unit typically includes:

• Scheduled high-pressure water jetting of the main drain runs, usually two to four times a year depending on the type of business
• Grease trap emptying and inspection on a fixed cycle
• Annual CCTV drain survey so you can see what's actually happening inside the pipework, not just guess
• Gully and manhole clearance before the autumn leaf season hits (and it hits hard on the older business parks around Shirley and Olton)
• A written report after each visit so you have documentation if a landlord or tenant dispute ever arises

For businesses like restaurants, takeaways, or food manufacturers in the B90, B91, or B92 areas, the investment in a planned contract is usually repaid the first time you avoid a Saturday night emergency call-out. And Saturday nights do come around.

Commercial drainage contracts also give you predictable costs, which matters if you're managing a block of units or a managed service estate in somewhere like Marston Green or Dickens Heath.

Landlord Obligations: The Bit Nobody Reads Until It's a Problem

Landlords in Solihull, whether you've got a HMO in Chelmsley Wood, a terrace in Kingshurst, or a mixed-use block in Castle Bromwich, have specific duties around drainage. Let me be direct about where the responsibility usually sits.

For residential lets, the landlord is responsible for maintaining the drains serving the property up to the point where they connect to the public sewer. That means if there's a collapsed section, a root intrusion, or a structural defect in the private drain, that's on you. Not the tenant. A tenant blocking their own drain with fat or wet wipes sits differently, and a decent tenancy agreement should address that, but the underlying fabric of the drainage system is a landlord obligation.

For commercial lets, the lease will usually define responsibilities, but a lot of older commercial leases in this area are ambiguous on drainage. If you're a commercial landlord in Solihull and you haven't checked your leases on this point recently, do it. If the tenant is running a food operation and their grease management is your problem by default under the lease, you want to know that now, not when Severn Trent sends a notice.

HMO landlords have an additional layer. A licensing condition under Solihull's HMO framework is that the property is maintained in good repair. Drainage is part of that. An annual CCTV drain survey is not a legal requirement, but I'd argue it's the cheapest insurance you can buy. A survey costs a fraction of what a collapsed drain under a shared house costs to excavate and replace. And if you ever face an inspection, having survey reports on file shows a proactive approach.

Root ingress is a specific risk for older Solihull rental stock. A lot of the Victorian and Edwardian terrace conversions in Hall Green and Acocks Green have clay pipe drainage that's cracking at the joints. Roots from garden trees find those joints. I've pulled root masses out of HMO drains in Smith's Wood that tenants didn't even know were there because the blockage was slow-building, not sudden. A CCTV survey catches that before you're looking at a full excavation.

What Drain Relining Means for Commercial and Landlord Properties

If a CCTV survey finds a cracked or root-damaged drain, the repair doesn't always mean digging up a car park or a kitchen floor. Drain relining installs a new pipe-within-a-pipe from the inside, using resin-impregnated liner cured in place. For a commercial property where downtime matters, or a rented house where you can't easily move tenants out, no-dig relining is often the right answer.

Remedial work we carry out, including relining and pipe replacement, carries a 20-year guarantee. For a landlord, that's a meaningful thing to have in writing, covering you well beyond a typical tenancy or lease period.

Root Cutting and Descaling for Older Commercial Stock

If the survey shows root ingress without full pipe collapse, root cutting is sometimes the starting point rather than relining. We use high-pressure jetting with a root-cutting nozzle to clear the roots back, then descale the pipe walls, then survey again. That tells us whether the pipe structure is still sound enough to reline, or whether replacement is the honest recommendation.

I don't reline a pipe that isn't going to hold a liner. Some drainage companies do. I'd rather tell a client the truth about what the pipe needs than come back in three years for a second job.

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Drainsco covers Solihull and the surrounding B postcodes, from Coleshill and Meriden out to Balsall Common and Knowle, and every business park and housing estate in between. Engineers are on call 24 hours a day, seven days a week. There's no call-out fee, and you'll have a clear price before any work starts. If you're a landlord or business owner who wants to talk through a planned maintenance programme, or you've just had a survey flag something you need a second opinion on, give us a call.