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Why Your Grease Trap Isn’t Enough: Kitchen Drainage Explained

Commercial kitchen drainage system showing grease buildup and pipework – common cause of a blocked drain in Portsmouth restaurants and cafés

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Grease traps are essential in commercial kitchens, but they’re not a complete solution. At Portsmouth Drains24, we often help restaurants, cafés, and takeaways dealing with recurring blocked drains in Portsmouth — even when a grease trap is in place.

If you’re running a food business in Portsmouth, it’s time to look deeper into kitchen drainage maintenance and how you can stay ahead of costly emergencies.

🍳 The Hidden Truth About Commercial Kitchen Drainage

In fast-paced kitchens, cooking fats, oils, and food waste are constantly going down the drain. While grease traps capture much of this, they don’t stop everything.

Here’s what commonly slips through:

  • Fine grease particles (especially from hot water rinse cycles)
  • Detergents and emulsified fats
  • Food debris and starchy residues
  • Scale from boiling equipment or dishwashers

This residue builds up downstream of your grease trap — especially in pipe bends and longer runs — eventually leading to bad smells, slow drainage, and blockages.

⚠️ Signs Your Kitchen Drainage Needs Attention

Even with a grease trap, look out for:

  • Persistent odours near sinks or wash-up areas
  • Slow-draining sinks despite recent trap emptying
  • Water backing up during peak hours
  • Gurgling sounds from underfloor drainage
  • An increase in rodent or insect activity

These issues are not only disruptive — they can affect hygiene ratings and customer confidence.

🚿 How Portsmouth Drains24 Solves It

We offer scheduled commercial drain maintenance, designed to support food service businesses across Portsmouth and surrounding areas.

Our services include:

✅ High-Pressure Water Jetting

This is the most effective method for removing built-up grease, fat, and scale. We clear the entire pipe run – not just what’s above the grease trap.

✅ CCTV Drain Inspections

We locate problem zones before they become full blockages. Video evidence is provided for your records or landlord communication.

✅ Emergency Unblocking

When downtime is not an option, our 24/7 emergency team will respond quickly with no call-out fees.

✅ Routine Maintenance Plans

We tailor cleaning schedules for each business — monthly, quarterly, or seasonal visits to suit your kitchen’s volume.

🏙️ Trusted by Portsmouth’s Food Scene

We work with:

  • Local pubs and independent restaurants
  • Café chains and takeaways
  • School kitchens and canteens
  • Large commercial catering facilities
  • Facilities managers across Hampshire

All our work is fully insured, documented, and done with minimal disruption to your business.

📍 Local Drainage Experts in Portsmouth

We cover:

  • Southsea
  • Fratton
  • Portchester
  • Cosham
  • Gunwharf Quays
  • Milton and beyond

With local knowledge and a reputation for reliability, Portsmouth Drains24 is your go-to partner for all blocked drain Portsmouth needs.

📞 Book a Commercial Drain Cleaning Visit

Don’t wait for a kitchen shutdown to act.

✅ No call-out fees
✅ Fast response
✅ Fixed, transparent pricing
✅ Preventative and emergency services

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