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Commercial Buildings · Office Towers · BC

Weekend without the office.
The P-traps run dry.
Monday morning: it stinks.

Modern office building — office floors, tea kitchens, restrooms with auto-flush valves. Weekend — everything quiet. Monday morning — complaints about "that smell" in the restroom on the 6th floor. The building owner is looking for a solution that won't require intervention every weekend.

EN 1253No chemistryQuietMaintenance-free
0
Complaints about smells
0
Intervention
5 years
Life
30 s
By P-trap
Problem & solution

Modern office buildings have specific problem.

Auto-flush systems are installed for water safety. But the floor drain dries out on weekends and holidays—because no water passes through it.

Without Green Drain™

  • The toilet's auto-flush doesn't go through the floor drain — the floor drain P-traps dry.
  • Kitchenettes have a small drain—it's rarely used and tends to dry out.
  • Weekends and summer vacations — the whole floor can be dry for a week.
  • Smell complaints in building management systems (BMS) — intervention cost
  • Corporate tenants are canceling contracts due to a 'bad impression' in public spaces

With Green Drain™

  • No dependence on auto-flush or glycol-filled P-traps.
  • Quiet operation — a guest in the restroom on the next floor won't hear your flushing.
  • A consistent solution throughout the entire building — standardization
  • Resistant to chlorine tablets in toilets and maintenance products
  • No need for routine maintenance at the P-trap level.
Adria Commercial Real Estate

Sector is becoming professional.

Zagreb and the regional centers have developed a building services scene over the past decades. Technical managers are winning maintenance tenders, and Type A tenants (IT, finance, corporations) are increasingly evaluating a building by details such as the absence of odors.

EN 1253
Standard that covers most BC installations
LEED / BREEAM
Contribution to the building's sustainability rating
FM tender
Standard procedure through the facility management partner
0
Complaints about odors — a measurable KPI for the building manager
0
Cooling glycol — fewer WHS risks
5 years
Lifetime without intervention — CapEx, not OpEx
Data Sources and Regulatory Framework (2024–2025 data)

Statistical data taken from official Irish and EU sources: Central Statistics Office Ireland (cso.ie), Health Service Executive (hse.ie), Failte Ireland (failteireland.ie), Bord Bia (bordbia.ie), IDA Ireland (idaireland.com), Health Products Regulatory Authority (hpra.ie). Regulatory framework: EUR-Lex for EU directives — EU 2017/745 (MDR), EU 178/2002 (food safety), EU 1935/2004 and EU 10/2011 (food contact materials), EU 528/2012 (BPR), EU 2014/34 (ATEX). Standards: EN 1253-1 (floor P-traps, water seal ≥50 mm), EN 1253 Parts 6/7/8 (mechanical seal failures, 2023), HACCP International RG-04, ASSE 1072-2020, NSF/ANSI 2, HSE SARI guidelines. Revision date: May 2026.

Implementation

Procedure through Facility management

The building manager is requesting documentation for property management. We are sending the technical manual and the tender-ready specification.

01

Technical manual

EN 1253 spec, IPS data, ASSE 1072 report — covers PM tender.

02

Pilot cat

One floor or wing — pilot, 90-day evaluation.

03

FM decision

The facility manager adds the specification to the portfolio.

04

Roll-out

By floors — during regular nightly maintenance.

Model Recommendation

Recommendation per type of space in the BC building.

More modern BC buildings in Zagreb (Allianz Tower, Eurotower, Zagrebtower, Almeria, Vmd Centar) are constructed in accordance with EN 1253. Sanitary facilities and tea kitchens are predominantly DN50. Garages, technical rooms, and central kitchens (canteens) are sized larger.

Green Drain™ Recommended for your industry.

  • Restrooms on each floor (standard)GD 2Most BC buildings over the past 20 years.
  • KitchenettesGD 2Small P-trap, rarely used.
  • Central canteen for tenantsGD 3 or GD 4HoReCa standard.
  • Garage floor drainsGD 4 or GD 5Washing off oil, rain, and snow.
💬 Not sure of the exact size? Send us a photo of your sink drain — our technical team will respond with a written recommendation within the same business day, free of charge.
Check out Green Drain™ → Request a quote
GD 1.5
DN40 · kitchenette shower drain channels
GD 2
DN50 · plumbing, kitchenette
GD 2.5
DN65 · premium business class, deluxe lobby
GD 3
DN80 · cafeteria, small kitchens
GD 4
DN100 · garages, technology
GD 5
DN125 · central grooves
Complete solution

Three products.
One protection portfolio.

Green Drain™ doesn't work alone — for maximum drain control it's combined with GD Uri-Tabs™ (urinals) and GreenSwirl™ (biofilm bio-cleaning).

Ready for Free audit?

We come to the site, map the drains, and provide a written recommendation—no cost, no obligation.