Joist Systems

When choosing a floor joist system or a flat roof system, the range of options on the market can be confusing. They all have their own advantages.

Merronbrook, has been leading the way in Timber Engineered for over half a century. We have been at the forefront of supplying timber engineered products to developers and contractors across the Southeast of England. Our extensive experience and dedication to quality has made us a trusted partner in the construction industry.

The modern dwelling has an increasing number of services running throughout it, so the ability to run services easily through the floor zone is essential. Traditionally, the floor zone would be cut, notched, and drilled to accommodate these services. This not only increases works on site but could severely compromise the performance of the joist system.

Open metal web joist systems have become the smart choice for developers, due to the many benefits they offer from longer spans to greater service-carrying capacity and design flexibility. Merronbrook uses the easi-joist® system from Wolf®, chosen for its innovative design options, years of engineering excellence and integration with our existing products. Specifying easi-joist® eliminates the requirement of drilling or notching with its ability and outstanding flexibility to accommodate the design-on-site approach of any modern home, commercial or industrial buildings.

Profiles, end widths and depths, based on single joists.

Merronbrook’ s offering of the easi-joist® is available in 4 depths from 219mm to 417mm, utilising 47mm top and bottom timber chords. The widths vary from 72mm to 147mm and can also be constructed as double joists, if required. Fixing multi-ply joists is to be carried out to metalwork suppliers’ instructions using proprietary fastening screws. Depth, width, and centres will all be determined by easi-joist® software.

Easi-joist® is designed to allow for easy accommodation of electrical, plumbing, wastewater and other services required within the floor joist area with no cutting or nothing required.

Click on our interactive Floor Detailing Key to find out more.

Easi-Joist® Open Metal Web System

We use Wolf Systems’ industry-leading easi-joist® open metal web system. Combining the benefits of sustainable, kiln-dried, stress-graded timber with the rigidity and strength of the easi-joist® metal web construction, we provide lightweight floor beams, engineered to precise dimensions.

When installing services in a traditional engineered I-joist, holes need to be cut into the supporting web – a practice which takes time and, in some cases, can affect the structural integrity of the joist. As its name suggests, the easi-joist® open metal web system has a readymade prevision for passage of services, which allows easy installation of services such as pipes, cabling, trunking, and ducts in the floor zone. Among its advantages, using this system reduces build time, saves on labour costs and limits any possibility of incorrect workmanship.

I-joists and other comparable systems can experience levels of moisture and shrinkage that ultimately affect the structure’s long-term stability. The combination of our stress-graded timber and the open metal web system greatly reduces shrinkage factors and results in a quieter and longer-lasting floor system.

The sturdy construction of an easi-joist® in comparison to other types of joists, allows for greater spans when designed with its correct loading. Click here to our span capability page.

Aside from being strong and robust, the easi-joist® system is a lightweight floor joist solution as it combines smaller timber sections with a lightweight metal web, making it easy to move into its position.

When designed, the easi-joist® can be used not only in floor zones, but as flat roof and even pitch roof joists.

Click here to our span capability page.

easi-joist® open metal web floor systems allow for the installation of a rigid Strongback that reduces vibration and improves the overall acoustic performance of the floor. Coupled with the installation in hangers, on a block wall or in a timber frame structure, the joists still retain their thermal and sound transmission properties

All the previous USPs of the easi-joists® will result in a quicker completion of floor zones, in comparison to traditional techniques. These lightweight pre-voided joists will save costs, not only on labour, but overall site prelims.