Project Focus

Meissner Castlebar Shell & Core Fit-out & ISO 7 Clean room


Design/Tender/Site Ops.
Project Management
Cost Management
Fire Engineering
Statutory Compliance


€5, 100 000


24 weeks


20 weeks


34 weeks


Complete with Phase II in Detail Design stage


3,900 sq. m. (42,000 sq. ft.)

Project Deliverables

  • Engineering workshop to finalise Scope
  • Detailed Survey and Revit Model
  • 30% Design Report and Presentation
  • 90% Design Report and Presentation
  • Hazard Analysis
  • Value Engineering Workshop
  • Budget Cost Analysis at each Design Phase
  • PSDP and Preliminary SHW Plan
  • Procurement/ Contract Strategy
  • Tender Documentation
  • Contractor Pre-Qualification prior to Tender
  • Tender Analysis & Final Report
  • IFC Documentation
  • Site Support during Construction
  • Handover & Completion Strategy

The success of this project and Meissner's continued growth globally has resulted in Taylor Group being awarded the design of Meissner's €80 million expansion currently in the pre-tender stage and scheduled for delivery in 2026.

– Project Manager Patrick Gaughan


Meissner Filtration Products which manufactures single-use systems at its only manufacturing facility outside the US in its new facility in Castlebar, Co. Mayo . The site features a state of the art 930 m² (10,000 ft²) ISO class 7 cleanroom with an overall facility footprint of 3,900 m² (42,000 ft²).

With Taylor Group Meissner were able to bring the Castlebar site online with manufacturing capabilities in just over one year following the accusation of the IDA’s new Advanced Technology Building. This was achieved by expediting a number of the packages , including the primary structural steel , HEPA filters and AHU chillers and primary electrical gear.

Off site manufacturing was utilised with a modular build boiler house manufactured for on site assembly to fast track the project.

The clean room comprised of a double stud low level return walls , polished concrete floor , and ceiling service drops were also designed with additional redundancy to allow for future adaptability based on the manufacturing requirements.


TG was engaged as a single point design team to deliver the design, procurement and administration of contracts on site in a traditional build contract.

Project Brief

Workshops were convened after appointment to fully scope the project. An ISO 8 cleanroom with 60 Air Changes per Hour and the ability to achieve ISO 7 if required. Staff changing and welfare facilities , canteen, Offices and a high bay warehouse were provided. A requirement to be operational 12 months from handover of the building was also identified as a key milestone in the success of the project delivery.

Project Challenges

The fast track nature of this project required TG to tailor a design and tender solution that prioritized early procurement of long lead items and design flexibility for future manufacturing requirements into the scheme.

The use of polished concrete floors, double stud low level return walls and a timber technical floor allowed TG to satisfy the programme requirements.

Health & Safety

TG also provided the services as PSDP and the appointed contractor provided the service of PSCS.

Building Services

A full suite of building services drawings were generated including integration into site BMS/FMS systems. New P&IDs were generated by the design team.

Site Utility Capacity

Detailed surveys were undertaken of existing utilities to ensure adequacy of supply to service the new facility including tie points, controls and demand.

Building Commissioning & Validation

Commissioning activities were carries out by the construction team and temperature mapping, pressure profiles and particle counts were conducted in conjunction with the site team.

Completion & Handover

A detailed walk down of all systems was conducted by the construction team including handover of O&M Manuals and Safety File.