Monkeytoe supplies the appropriately sized Dektite boot with our Stub leg kits, which should be installed by the main roofing contractor at the time of roof install. This typically means that the leg stubs are installed before the roof itself. On a retrofit project, if there is an existing roofing contractor then we recommend they be engaged to install the boots. If there are no roofers currently on the job then Monkeytoe can engage one for you.

In short, no. Where these connections are made inside a building, there are no concerns. For galvanic corrosion to occur, an electrolyte must be present to complete the electrical circuit. This should not be happening inside a building often enough for corrosion to happen. As an added precaution, however, Monkeytoe recommend using a lanolin moisture/corrosion inhibitor spray at the time of install to prevent any moisture from being trapped during construction. We have chosen zinc bolts for this application as they are more compatible with aluminium than galvanised fasteners are, and they maintain compatibility with the steel structure. Where this connection occurs in a weather-exposed area, isolation will be provided between all dissimilar metals to mitigate and prevent corrosion. This will typically be a thin rubber or hard plastic layer, but in some situations a specialised coating may be used.

This is covered by a combination of physical testing as per AS/NZ 1170.0 Appendix B, as well as reference to the European composites code where applicable.

While the Xbeam is watertight along the main length, the end caps aren’t a sealed fit. We are now looking at making the entire beams watertight by using a waterproofing foam in the ends of the cavities before installing the end caps.