Engineered Posi Joists

 Open Metal Web Joists (Posi Joists)

Posi Joists by Harmony Timber Solutions – Sustainable Engineering with Timber

Our engineered floor joists (Posi Joists) consist of an Open Metal Web Joist flooring system which have many advantages over traditional timber floor joists.

A Posi Joist open web flooring system combines the lightness of timber with the strength of the steel web the result is the most versatile open web system available to the modern building designer. With greater spans and design flexibility the system can be used in traditional build, timber frame houses and commercial structures, both floor and roof, without compromise. A modern flooring system to match the modern demands of the construction industry. Being manufactured and delivered from our Ireland manufacturing plant we can ensure high quality and fast response times.

Also, the open metal web joist system allows for ease of access to, and installation of, plumbing and wiring, without the need to drill through joists. Fulfilling the need for MVHR (Mechanical Ventilation & Heat Recovery) systems.

Why use our engineered open metal web joists (Posi Joists) for your project?

  • Fully prefabricated and manufactured, reducing on site labour costs
  • Greater design freedom when planning for services
  • Posi Joists can be supplied with adjustable end blocks for site trimming if required
  • Strong but lightweight for easier on site handling
  • Fully engineered so no need for costly engineers calculations or input
  • Can be used for both roof and floor designs

For more information please Click Here for our brochure

Client: (Working for and with you)

Sometimes referred to as Metal web joists or Easi-joists, our open web joists (Posi Joists) are available in depths ranging from 225mm to 421mm.

We provide clear and accurate drawings together with technical guides with every order. MiTek software and experienced designers ensures accurate design and manufacture of our Posi joists.

Our Ireland office is manned 8am – 5pm weekdays for all your support requirements.

Value Added: (Value & Quality)

All our Posi joists are made to measure, reducing site wastage and alterations. Open metal web joists (Posi joists) are fully engineered so there is no need for costly engineers calculations or input.

Full calculations are included in all of our designs upon request, saving you time and money on engineering input.

Our Posi joists can be manufactured, in Ireland up to 12 metres in length.

Efficient Cost Solution

Open web joists (Posi joists) are fully prefabricated in our Ireland factory, reducing on site labour costs, a wide fixing surface makes flooring easy and controls shrinkage.

Posi joists are strong but lightweight for easier on site handling. The open web system allows services to continue through almost any location within the floor zone.

With the ability to span greater distances they may even eliminate the need for intermediate load bearing walls, this dramatically cuts overall building costs.

Order Fulfilment

We carry Full PI insurance.

All our timber is sourced from sustainable, well managed forests and is certified to PEFC. Deliveries are made to suit customer’s needs – reducing on site storage.

Remember Open Web joists (Posi joists) are not just for floors, they can be used across a wide range of applications for both floor and roof in domestic, industrial and commercial applications.

All products are labelled and plot bundled in Ireland, to assist you to manage your installation on site.

Deliveries are throughout Ireland, including, Wicklow, Dublin, Kildare, Meath, Carlow and Wexford.


We provide clear and accurate drawings, from our Ireland office, together with technical guides with every order.

Our Ireland office is manned 8am – 5pm weekdays for all your support requirements.

Can we help? Contact Us Now