Si R can facilitate high degrees of seismic or thermal movement, whilst weatherproofing the gap to guarantee long-lasting service. The product development team at Unison Joints devised a state-of-the-art joint mechanism using smooth lines, which suitably integrate with surrounding roof and wall cladding.

Si R utilises cbar type couplings, manufactured from an injection-moulded composite material to reinforce nil corrosion factor and overall longevity. The cover plate is shaped like a ridge cap, integrated with a secondary drape seal to provide superior resistance to water, saline moisture and other weathering agents.

Unison Joints manufactures the standard Si R roof expansion joint covers from natural-anodised aluminium, widely used for its exceptional resistance to hard, long-term wear. The durable alloy also exhibits anti-corrosive properties, allowing the roof cover plate expansion joint system to combat premature degradation even under harsh weather conditions.

Aside from natural-anodised aluminium, clients can specify the Si R cover plate in mill-finish aluminium, preferable for cost-efficient durability and a rough finish that lacks lustre. Unison Joints can also supply the aluminium cover plate system in a powder coated finish, which adds a layer of protection without solvents or volatile organic compounds (VOC), unlike most standard coating materials. Powder coating also opens doors to creative possibilities with a wide spectrum of colors to choose from.

Si R is available in the standard length of 4.8m. Its cover plate can be specified in widths from 170mm to 700mm, with a thickness of 2 or 3mm. Unison Joints can supply Si R in a roof-wall version to meet the demands of various projects. Fire barriers and accessory drainage spigots are also available upon client request.

Contact Unison Joints for more information on roof expansion joint covers. Visit www.unisonjoints.com.au today.